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Academic literature on the topic 'Aircraft carriers in art'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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Journal articles on the topic "Aircraft carriers in art"

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Thakur, Rahul, and K. Vignesh Kumar. "Investigation of the Effect of Ski Jump on the Flow Dynamics around Generic Aircraft Carrier." Defence Science Journal 71, no. 2 (March 10, 2021): 296–303. http://dx.doi.org/10.14429/dsj.71.15648.

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The landing operation on an aircraft carrier is a complicated and risky process. Unlike land-based operations, the landing area available on carriers is in continuous motion in all the six degrees of freedom. The ski jump, flight deck, hull, and superstructure of the carrier interact with the oncoming wind’s flow-field which creates a turbulent airflow behind the carrier. This ‘burble effect’ is very dangerous and has caused various mishaps in the past. To complement the work being undertaken at IIT Delhi to study the flow dynamics in the carrier environment, the present study investigates the effect of ski jump and superstructure on the flow around the generic aircraft carrier (GAC). Computational fluid dynamics (CFD) studies are undertaken to simulate the airwake and establish a baseline with the ski jump. Subsequently, further studies are carried out to analyse the sensitivity of the wake to changes in carrier geometry. The introduction of the ski generates a major proportion of turbulence encountered in the aft by the approaching pilot. This is reduced significantly by optimising ski jump geometry in various ways.

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Boucher, Y., A. Amiez, P. Barillot, C. Chatelard, C. Coudrain, P. Déliot, N. Rivière, T. Rivière, and L. Roupioz. "TERRISCOPE: AN OPTICAL REMOTE SENSING RESEARCH PLATFORM USING AIRCRAFT AND UAS FOR THE CHARACTERIZATION OF CONTINENTAL SURFACES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-1 (September 26, 2018): 65–70. http://dx.doi.org/10.5194/isprs-archives-xlii-1-65-2018.

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<p><strong>Abstract.</strong> ONERA is developing TERRISCOPE, a new platform to characterize the environment and the continental surfaces by optical remote sensing using manned aircrafts and UAS (Unmanned Airborne System). The objective of TERRISCOPE is to make available to the scientific community combinations of optical measurements remotely sensed with the best level state-of-the-art sensors. Different kinds of sensors have already been acquired or are still being acquired: Hyperspectral sensors (0.5&ndash;2.5<span class="thinspace"></span>&mu;m range), visible high resolution cameras, multispectral infrared cameras and airborne laser scanners. Each sensor is declined in two versions: one high performance for manned aircrafts and one more compact for UAS. This paper describes the whole equipment, and presents the main characteristics and performances of the carriers, the sensors and the processing chain. Possible sensors combinations on airplanes and UAS are also presented, as well as preliminary results.</p>

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Schaal, Nicholas Cody, Maria Majar, and Andrew Hunter. "Sound Level Measurements in Berthing Areas of an Aircraft Carrier." Annals of Work Exposures and Health 63, no. 8 (July 1, 2019): 918–29. http://dx.doi.org/10.1093/annweh/wxz051.

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Abstract Background Personnel assigned to aircraft carriers work and live in environments where hazardous noise areas and hearing recovery spaces such as sleeping areas are in close proximity to one another. Hazardous noise exposure occurring during on-duty time periods and elevated noise levels during off-duty periods in sleeping areas may be prohibiting adequate hearing recovery, thus potentially leading to hearing loss and may lead to adverse effects on sleep, leading to crew-member fatigue. This investigation characterizes Equivalent sound level (Leq) and standardized octave band center frequency noise levels according to berthing (sleeping) area location during flight operation and nonflight operation time periods on a US Navy aircraft carrier. In addition, the investigation compares noise measurements in sleeping areas to noise levels associated with auditory rest and poor sleep quality and quantity. Methods Noise levels were measured in berthing areas aboard a US Navy Nimitz-class aircraft carrier during a routine at-sea period. Sixty noise measurements were taken in eight sleeping locations. Leq in decibels ‘A’ weighted (dBA) and noise levels from 16 to 16 000 Hz in (dB) were measured during flight operations [Leq (flt ops)] and nonflight operations [Leq (nonflt ops)]. Leq was also measured according to sleep area shipboard locations of forward (FWD) Leq (FWD), middle (MID) Leq (MID), and rear (AFT) Leq (AFT). These data were compared to the 70 dBA American Conference of Governmental Industrial Hygienists (ACGIH) threshold limit value (TLV) for effective quiet areas. In addition, these data were compared to noise levels associated with hearing loss and sleep parameters. Statistical analysis was conducted with R version 3.5.2 using an alpha level of 0.05. Results Leq (flt ops) in sleeping areas was a statistically significant (P < 0.05) 6.4 dBA higher than the Leq (nonflt ops). Leq (FWD) and Leq (MID) in sleeping areas was a statistically significant (P < 0.05) 15.2 and 15.0 dBA higher, respectively, than the Leq (AFT) noise levels. Mean noise levels at standardized center (1/1) octave bands were highest between 500 and 4000 Hz, ranging from 65.2 to 69.8 dB. A total of 72% of all area Leq measurements exceeded the 70 dBA ACGIH TLV classified as effective quiet to allow for temporary threshold shift recovery. All noise measurements exceeded the World Health Organization’s noise threshold where adverse effects on sleep begin. Discussion/Conclusions Results suggest that sleeping area location in close proximity to relatively high noise sources and activities occurring on an aircraft carrier (i.e. flight operations) increase noise levels in sleeping areas. These findings raise serious concerns since high noise exposures both on duty and during off-duty/sleeping periods may inhibit auditory recovery from hazardous noise exposures. In addition, results suggest noise levels in sleeping areas are high enough to evoke negative sleep effects.

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Parkinson, B. W., and K. T. Fitzgibbon. "Aircraft Automatic Landing Systems Using GPS." Journal of Navigation 42, no. 1 (January 1989): 47–59. http://dx.doi.org/10.1017/s0373463300015083.

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abstractThis paper is based on a presentation made at the IAIN International Navigation Congress held in Sydney, Australia, in February 1988.The global positioning system (GPS) offers a new opportunity for the automation of aircraft landing systems. The position and velocity measurements provided by a state-of-the-art GPS receiver using the C/A code and working in a normal or differential mode (D-GPS) and aided by one or two ground-based PseudoLites (PLS), may be able to satisfy the landing accuracy requirements of the FA A.This paper describes the design and simulation of an aircraft automatic landing system. Aircraft position and velocity are assumed to be measured using a (carrier-tracking) GPS receiver. The hypothesized capability is based on measurements taken at Stanford and elsewhere, using the Trimble 4000SX, five-channel receiver in an integrated-doppler-aiding mode. For some of the autopilot designs, either ground-based GPS transmitters (pseudolites) or a radar altimeter have also been incorporated.Included in the landing simulations are wind shears and a gust model, creating realistic landing situations. The performances of the lateral and vertical displacements are presented with their 1σ r.m.s. estimation errors during the glide-slope and flare phases. Included are different wind conditions, GPS configurations and controllers. The results are compared with the FAA requirements for various categories of automatic landing systems.

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Su, Xichao, Wei Han, Yu Wu, Yong Zhang, and Jie Liu. "A Proactive Robust Scheduling Method for Aircraft Carrier Flight Deck Operations with Stochastic Durations." Complexity 2018 (November 1, 2018): 1–38. http://dx.doi.org/10.1155/2018/6932985.

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The operations on the aircraft carrier flight deck are carried out in a time-critical and resource-constrained environment with uncertainty, and it is of great significance to optimize the makespan and obtain a robust schedule and resource allocation plan for a greater sortie generation capacity and better operational management of an aircraft carrier. In this paper, a proactive robust optimization method for flight deck scheduling with stochastic operation durations is proposed. Firstly, an operation on node-flow (OONF) network is adopted to model the precedence relationships of multi-aircraft operations, and resource constraints categorized into personnel, support equipment, workstation space, and supply resource are taken into consideration. On this basis, a mathematical model of the robust scheduling problem for flight deck operation (RSPFDO) is established, and the goal is to maximize the probability of completing within the limitative makespan (PCLM) and minimize the weighted sum of expected makespan and variance of makespan (IRM). Then, in terms of proactive planning, both serial and parallel schedule generation schemes for baseline schedule and robust personnel allocation scheme and equipment allocation adjustment scheme for resource allocation are designed. In terms of executing schedules, an RSPFDO-oriented preconstraint scheduling policy (CPC) is proposed. To optimize the baseline schedule and resource allocation, a hybrid teaching-learning-based optimization (HTLBO) algorithm is designed which integrates differential evolution operators, peak crossover operator, and learning-automata-based adaptive variable neighborhood search strategy. Simulation results shows that the HTLBO algorithm outperforms both some other state-of-the-art algorithms for deterministic cases and some existing algorithms for stochastic project scheduling, and the robustness of the flight deck operations can be improved with the proposed resource allocation schemes and CPC policy.

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Kim, Soo-Hyun, Hye-Yeong Chun, Jung-Hoon Kim, Robert D. Sharman, and Matt Strahan. "Retrieval of eddy dissipation rate from derived equivalent vertical gust included in Aircraft Meteorological Data Relay (AMDAR)." Atmospheric Measurement Techniques 13, no. 3 (March 26, 2020): 1373–85. http://dx.doi.org/10.5194/amt-13-1373-2020.

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Abstract. Some of the Aircraft Meteorological Data Relay (AMDAR) data include a turbulence metric of the derived equivalent vertical gust (DEVG), in addition to wind and temperature. As the cube root of the eddy dissipation rate (EDR) is the International Civil Aviation Organization standard turbulence reporting metric, we attempt to retrieve the EDR from the DEVG for more reliable and consistent observations of aviation turbulence globally. Using the DEVG in the AMDAR data archived from October 2015 to September 2018 covering a large portion of the Southern Hemisphere and North Pacific and North Atlantic oceans, we convert the DEVG to the EDR using two methods, after conducting quality control procedures to remove suspicious turbulence reports in the DEVG. The first method remaps the DEVG to the EDR using a lognormal mapping scheme, while the second one uses the best-fit curve between the EDR and DEVG developed in a previous study. The DEVG-derived EDRs obtained from the two methods are evaluated against in situ EDR data reported by US-operated carriers. For two specified regions of the Pacific Ocean and Europe, where both the DEVG-derived EDRs and in situ EDRs were available, the DEVG-derived EDRs obtained by the two methods were generally consistent with in situ EDRs, with slightly better statistics obtained by the first method than the second one. This result is encouraging for extending the aviation turbulence data globally with the single preferred EDR metric, which will contribute to the improvement of global aviation turbulence forecasting as well as to the construction of the climatology of upper-level turbulence.

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Andersen, Poul, Jürgen Friesch, Jens J. Kappel, Lars Lundegaard, and Graham Patience. "Development of a Marine Propeller With Nonplanar Lifting Surfaces." Marine Technology and SNAME News 42, no. 03 (July 1, 2005): 144–58. http://dx.doi.org/10.5957/mt1.2005.42.3.144.

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The principle of nonplanar lifting surfaces is applied to the design of modern aircraft wings to obtain better lift to drag ratios. Whereas a pronounced fin or winglet at the wingtip has been developed for aircraft, the application of the nonplanar principle to marine propellers, dealt with in this paper, has led to the KAPPEL propeller with blades curved toward the suction side integrating the fin or winglet into the propeller blade. The combined theoretical, experimental, and practical approach to develop and design marine propellers with nonplanar lifting surfaces has resulted in propellers with higher efficiency and lower levels of noise and vibration excitation compared to conventional state-of-the-art propellers designed for the same task. Conventional and KAPPEL propellers have been compared for a medium-sized containership and a product tanker. In total, nine KAPPEL propellers and two conventional propellers have been designed, and models of all propellers have been examined with respect to cavitation and efficiency in the open-water and behind conditions. Casting procedures, measurement procedures, and stress analysis methods for the unconventional geometry of the KAPPEL propeller have been developed. Furthermore, the KAPPEL propeller has been applied in full scale to the product carrier investigated. Sea trials with the conventional propeller and the KAPPEL propeller have been performed and have proved an efficiency gain of 4% in favor of the new propeller. The improved efficiency was obtained at lower propeller-induced pressure fluctuations. The correlation between the theoretical, experimental, and full-scale results is discussed.

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JOHNS, ARTHUR W. "AIRCRAFT CARRIERS." Journal of the American Society for Naval Engineers 46, no. 2 (March 18, 2009): 272–78. http://dx.doi.org/10.1111/j.1559-3584.1934.tb03824.x.

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Langdon, M. "Carriers underway [Aircraft carriers design]." Engineering & Technology 4, no. 21 (December 5, 2009): 44–45. http://dx.doi.org/10.1049/et.2009.2109.

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Vázquez, Carlos M. "Argentine Republic v. Amerada Hess Shipping Corp." American Journal of International Law 83, no. 3 (July 1989): 565–68. http://dx.doi.org/10.2307/2203318.

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Plaintiffs and respondents, Amerada Hess Shipping Corp. and United Carriers, Inc., were respectively the charterer and owner of the Hercules, a crude oil tanker that was bombed in international waters by Argentine military aircraft during the war over the Malvinas or Falkland Islands. The ship was severely damaged and had to be scuttled off the coast of Brazil. After unsuccessfully seeking relief in Argentina, the companies filed suit against defendant and appellant, the Argentine Republic, in the Southern District of New York. Plaintiffs argued that the federal courts had jurisdiction under the Alien Tort Statute (28 U.S.C. §1350 (1982)), which confers federal jurisdiction over “any civil action by an alien for a tort only, committed in violation of the law of nations or a treaty of the United States.” The district court dismissed the suit for lack of subject matter jurisdiction, holding that the Foreign Sovereign Immunities Act of 1976 (28 U.S.C. §§1330, 1602-1611 (1982)) (FSIA) is by its terms the sole basis of federal jurisdiction over cases against foreign states. A divided panel of the U.S. Court of Appeals for the Second Circuit reversed. The Supreme Court (per Rehnquist, C.J.) unanimously reversed the Second Circuit and held that the FSIA provides the exclusive basis of federal jurisdiction over suits against foreign states.

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Dissertations / Theses on the topic "Aircraft carriers in art"

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Menhinick, Richard Temple. "Sea control & maritime projection for Australia maritime air power and air warfare /." Access electronically, 2003. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20040730.161702/index.html.

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Volpe, Kevin. "Persistent and continuous? U.S. carrier aviation in irregular warfare." Quantico, VA : Marine Corps Command and Staff College, 2008. http://handle.dtic.mil/100.2/ADA490808.

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Adams, Jason W. Adams Jason W. "An analysis of port-visit costs of U.S. Navy aircraft carriers." Monterey, Calif. : Naval Postgraduate School, 2008. http://handle.dtic.mil/100.2/ADA483584.

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Thate, Timothy J. Michels Adam S. "Requirements for digitized aircraft spotting (Ouija) board for use on U.S. Navy aircraft carriers /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02sep%5FThate.pdf.

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Thesis (M.S. in Information Systems Management)--Naval Postgraduate School, September 2002.
Thesis advisor(s): Alex Bordetsky, Glenn Cook. Includes bibliographical references. Also available online.

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Pascual, Vincent D. "The conceptual design and evaluation of an accuracy control system to support the hull construction of aircraft carriers." Master's thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-01122010-020056/.

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York, Michael A. "Optimal Scheduling and Operating Target (OPTAR) cost model for aircraft carriers in the fleet response plan." Thesis, Monterey, Calif. : Naval Postgraduate School, 2008. http://edocs.nps.edu/npspubs/scholarly/theses/2008/Sept/08Sep%5FYork.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, September 2008.
Thesis Advisor(s): Brown, Gerald G. "September 2008." Description based on title screen as viewed on October 31, 2008. Includes bibliographical references (p. 51-52). Also available in print.

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Michels, Adam S., and Timothy Thate. "Requirements for digitized aircraft spotting (Ouija) board for use on U.S. Navy aircraft carriers." Thesis, Monterey California. Naval Postgraduate School, 2002. http://hdl.handle.net/10945/4447.

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Approved for public release; distribution is unlimited.
This thesis will evaluate system and process elements to initiate requirements modeling necessary for the next generation Digitized Aircraft Spotting (Ouija) Board for use on U.S. Navy aircraft carriers to track and plan aircraft movement. The research will examine and evaluate the feasibility and suitability of transforming the existing two-dimensional static board to an electronic, dynamic display that will enhance situational awareness by using sensors and system information from various sources to display a comprehensive operational picture of the current flight and hangar decks aboard aircraft carriers. The authors will evaluate the current processes and make recommendations on elements the new system would display. These elements include what information is displayed, which external systems feed information to the display, and how intelligent agents could be used to transform the static display to a powerful decision support tool. Optimally, the Aircraft Handler will use this system to effectively manage the Flight and Hangar decks to support the projection of air power from U.S. aircraft carriers.

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Hall, Matthew H. "The impact of long-term aircraft carrier maintenance scheduling on the Fleet Readiness Plan." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Sep%5FHall.pdf.

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Callahan, Jeremy. "Metrics of METOC forecast performance and operational impacts on carrier strike operations." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Sep%5FCallahan.pdf.

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Thesis (M.S. in Meteorology and Physical Oceanography)--Naval Postgraduate School, September 2006.
Thesis Advisor(s): Tom Murphree, Rebecca Stone. "September 2006." Includes bibliographical references (p. 61-62). Also available in print.

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Adams, Jason W. "An analysis of port-visit costs of U.S. Navy aircraft carriers." Thesis, Monterey, Calif. : Naval Postgraduate School, 2008. http://handle.dtic.mil/100.2/ADA483584.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, June 2008.
Thesis Advisor(s): Koyak, Robert A. "June 2008." Description based on title screen as viewed on August 26, 2008. Includes bibliographical references (p. 55). Also available in print.

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Books on the topic "Aircraft carriers in art"

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Aircraft carriers. London/Edinburgh: Bison/Canongate Publishing, 1985.

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Preston, Antony. Aircraft carriers. Minneapolis: Lerner Publications Co., 1985.

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Copyright Paperback Collection (Library of Congress), ed. The art of war. New York, N.Y: Jove Books, 2001.

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Tritten, James John. Anti-carrier warfare and naval operational art. Monterey, Calif: Naval Postgraduate School, 1988.

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illustrator, Bryan Tony, ed. British aircraft carriers 1939-45. Oxford: Osprey Publishing, 2010.

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Da guo hang mu. Beijing Shi: Zhongguo chang an chu ban she, 2011.

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Xiaochuan, Tian, and Fang Bing, eds. Hang kong mu jian yu zhan zheng. Beijing Shi: Guo fang gong ye chu ban she, 1997.

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Traynor, David. Military and related terms: Explanations for modern acronyms, code names, aircraft and ship designations, popular nicknames, Soviet terms, supercarriers ; listings--aircraft, aircraft carriers, and submarines, military publications, nations. Seattle, WA, USA: DOT Pub., 1991.

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Sachs, Tom. The island: Guide. [United States]: s.n., 2006.

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Freeman, Roger Anthony. The mighty Eighth in art. London: Arms and Armour, 1996.

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Book chapters on the topic "Aircraft carriers in art"

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Seemann, Ralf. "State of the art." In A Virtual Testing Approach for Honeycomb Sandwich Panel Joints in Aircraft Interior, 5–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-60276-8_2.

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Delorme, Louis, Jacques Roy, and Jean-Marc Rousseau. "Motor-Carriers Operations Planning Models: A State of the Art." In Freight Transport Planning and Logistics, 510–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-662-02551-2_17.

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Byrne, Jonathan, Philip Cardiff, Anthony Brabazon, and Michael O’Neill. "Evolving an Aircraft Using a Parametric Design System." In Evolutionary and Biologically Inspired Music, Sound, Art and Design, 119–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-44335-4_11.

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Thomas, Peter, Pradipta Biswas, and Patrick Langdon. "State-of-the-Art and Future Concepts for Interaction in Aircraft Cockpits." In Universal Access in Human-Computer Interaction. Access to Interaction, 538–49. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20681-3_51.

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Rahimpour, Yahya, Hamed Hamishehkar, and Ali Nokhodchi. "Lipidic Micro- and Nano-Carriers for Pulmonary Drug Delivery-A State-of-the-Art Review." In Pulmonary Drug Delivery, 123–42. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118799536.ch6.

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Jahr, Jonathan S., Arezou Sadighi, Linzy Doherty, Alvin Li, and Hae Won Kim. "Hemoglobin-Based Oxygen Carriers: History, Limits, Brief Summary of the State of the Art, Including Clinical Trials." In Chemistry and Biochemistry of Oxygen Therapeutics, 301–16. Chichester, UK: John Wiley & Sons, Ltd, 2011. http://dx.doi.org/10.1002/9781119975427.ch22.

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Bozzano, Marco, Alessandro Cimatti, Anthony Fernandes Pires, Alberto Griggio, Martin Jonáš, and Greg Kimberly. "Efficient SMT-Based Analysis of Failure Propagation." In Computer Aided Verification, 209–30. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-81688-9_10.

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AbstractThe process of developing civil aircraft and their related systems includes multiple phases of Preliminary Safety Assessment (PSA). An objective of PSA is to link the classification of failure conditions and effects (produced in the functional hazard analysis phases) to appropriate safety requirements for elements in the aircraft architecture. A complete and correct preliminary safety assessment phase avoids potentially costly revisions to the design late in the design process. Hence, automated ways to support PSA are an important challenge in modern aircraft design. A modern approach to conducting PSAs is via the use of abstract propagation models, that are basically hyper-graphs where arcs model the dependency among components, e.g. how the degradation of one component may lead to the degraded or failed operation of another. Such models are used for computing failure propagations: the fault of a component may have multiple ramifications within the system, causing the malfunction of several interconnected components. A central aspect of this problem is that of identifying the minimal fault combinations, also referred to as minimal cut sets, that cause overall failures.In this paper we propose an expressive framework to model failure propagation, catering for multiple levels of degradation as well as cyclic and nondeterministic dependencies. We define a formal sequential semantics, and present an efficient SMT-based method for the analysis of failure propagation, able to enumerate cut sets that are minimal with respect to the order between levels of degradation. In contrast with the state of the art, the proposed approach is provably more expressive, and dramatically outperforms other systems when a comparison is possible.

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Jasiūnienė, Elena, Markus G. R. Sause, Vykintas Samaitis, Dimitrios G. Aggelis, Maria Pina Limongelli, and Steve Vanlanduit. "Conclusions." In Structural Health Monitoring Damage Detection Systems for Aerospace, 273–84. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72192-3_10.

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AbstractThe state of the art of structural health monitoring damage detection systems reviewed in this book shows that it is a promising area of technologies. SHM damage detection systems in civil aviation are still mostly limited to lab applications because there are still issues, which need to be solved for such systems to be integrated in an aircraft structure. Therefore, further research is needed to solve the current drawbacks/limitations of the existing SHM approaches such that this technology can be used in aircrafts.Despite the current limitations, SHM application for damage detection in aircrafts would make the flying safer and the structure lifetime longer and reduce the maintenance time and costs considering that the maintenance could be performed not at the predetermined intervals, but upon the need based on the condition that would be determined by the SHM systems used. We conclude some of the important differences and the common challenges to the methods reviewed in this book and provide an outlook on the next steps to a successful implementation.

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Bacharoudis, Konstantinos, Atanas Popov, and Svetan Ratchev. "Application of Advanced Simulation Methods for the Tolerance Analysis of Mechanical Assemblies." In IFIP Advances in Information and Communication Technology, 153–67. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72632-4_11.

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AbstractIn the frame of a statistical tolerance analysis of complex assemblies, for example an aircraft wing, the capability to predict accurately and fast specified, very small quantiles of the distribution of the assembly key characteristic becomes crucial. The problem is significantly magnified, when the tolerance synthesis problem is considered in which several tolerance analyses are performed and thus, a reliability analysis problem is nested inside an optimisation one in a fully probabilistic approach. The need to reduce the computational time and accurately estimate the specified probabilities is critical. Therefore, herein, a systematic study on several state of the art simulation methods is performed whilst they are critically evaluated with respect to their efficiency to deal with tolerance analysis problems. It is demonstrated that tolerance analysis problems are characterised by high dimensionality, high non-linearity of the state functions, disconnected failure domains, implicit state functions and small probability estimations. Therefore, the successful implementation of reliability methods becomes a formidable task. Herein, advanced simulation methods are combined with in-house developed assembly models based on the Homogeneous Transformation Matrix method as well as off-the-self Computer Aided Tolerance tools. The main outcome of the work is that by using an appropriate reliability method, computational time can be reduced whilst the probability of defected products can be accurately predicted. Furthermore, the connection of advanced mathematical toolboxes with off-the-self 3D tolerance tools into a process integration framework introduces benefits to successfully deal with the tolerance allocation problem in the future using dedicated and powerful computational tools.

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Jones, Ben. "The Fleet Air Arm and Trade Defense, 1939–1944." In Decision in the Atlantic, 125–49. University Press of Kentucky, 2019. http://dx.doi.org/10.5810/kentucky/9781949668001.003.0006.

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This chapter by Ben Jones examines the efforts of the Fleet Air Arm to assist in the defense of Britain's sea-borne trade, especially in the Atlantic and Arctic, between 1939–1944. It assesses early setbacks, the hunting for surface raiders, and the options considered to deploy aircraft at sea in defense of convoys. In the early war years, the Fleet Air Arm was thinly-spread and lacked the resources for trade defense. Due to a lack of other assets, the Royal Navy was forced to employ its escort carriers for a range of duties, rather than just trade defense, and the arguments with the Americans over their employment will be explored. Finally, the effectiveness of the Fleet Air Arm's aircraft in the anti-submarine role is assessed in terms of their design, the types of operations they undertook, and the weapons they carried. There is a comparison between the success of the escort carriers of the British and American navies in the anti-submarine role and an explanation of why the latter achieved greater success.

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Conference papers on the topic "Aircraft carriers in art"

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Downs, D. S. "Development of the Queen Elizabeth Class Aircraft Carriers." In Warship 2009: Air Power at Sea. RINA, 2009. http://dx.doi.org/10.3940/rina.ws.2009.02.

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Harris, A., T. Dinham-Peren, L. Sears, and N. Ireland. "The Hydrodynamic Design of the Queen Elizabeth Class Aircraft Carriers." In Warship 2009: Air Power at Sea. RINA, 2009. http://dx.doi.org/10.3940/rina.ws.2009.14.

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Lison, A. "Integrating the Joint Combat Aircraft into the Queen Elizabeth Class Aircraft Carriers - Design Challenge or Opportunity?" In Warship 2009: Air Power at Sea. RINA, 2009. http://dx.doi.org/10.3940/rina.ws.2009.07.

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Grunditz, G., J. Fisher, and B. Thorp. "Propeller and Rudder Design for the Queen Elizabeth Class Aircraft Carriers." In Warship 2009: Air Power at Sea. RINA, 2009. http://dx.doi.org/10.3940/rina.ws.2009.11.

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Kelly, M. F., N. A. Watson, S. J. Hodge, M. D. White, and I. Owen. "The Role of Modelling and Simulation in the Preparations for Flight Trials Aboard the Queen Elizabeth Class Aircraft Carriers." In 14th International Naval Engineering Conference and Exhibition. IMarEST, 2018. http://dx.doi.org/10.24868/issn.2515-818x.2018.037.

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This paper provides a brief overview of how modelling and simulation has been used to inform preparations for First of Class Flight Trials (FOCFT) aboard HMS Queen Elizabeth, the first of the United Kingdom’s two new Queen Elizabeth Class aircraft carriers, from the perspective of a collaborative research programme undertaken by industry and academia to develop high-fidelity simulations of the carrier’s ‘airwake’. Computer modelling of the unsteady air flow over the carrier, and of the aircraft flight dynamics, have been integrated into high-fidelity flight simulators at BAE Systems Warton, and at the University of Liverpool. The Queen Elizabeth Class (QEC) carriers have primarily been designed to operate the Short Take-Off and Vertical Landing (STOVL) variant of the Lockheed Martin F-35 Lightning II multirole fighter aircraft and will also operate a range of rotary-wing assets. Computational Fluid Dynamics (CFD) has been used to compute the time-varying air flow over and around the 280m long ship, along the F-35B landing approach path and up to 400m astern of the ship. The paper shows a selection of results from the full-scale CFD analysis, and the results from a small-scale experiment that was conducted to provide confidence in the validity of the computed airwakes. The QEC airwakes have been employed by BAE Systems in its fixed-wing flight simulator at Warton, where test pilots have conducted simulated deck landings for a variety of wind over deck conditions, so providing experience for F-35B test pilots and the ship’s Flying Control (FLYCO) crew ahead of FOCFT, which will be conducted later this year. Airwakes have also been implemented in the HELIFLIGHT-R flight simulator at the University of Liverpool, where helicopter landings to the QEC have been simulated using a generic medium-weight maritime-helicopter model. A selection of results from the helicopter flight simulator trials is presented in terms of the workload ratings reported by test pilots, and these are related to the characteristics of the computed airwake at the landing spots tested. The paper demonstrates how modelling and simulation can be used to reduce both the risk and cost of flight trials, by informing the FOCFT planning process, and by highlighting, in advance of the trials, which wind speed and azimuth combinations may require more focus.

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Martens, Steve, and John T. Spyropoulos. "Practical Jet Noise Reduction for Tactical Aircraft." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-23699.

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GE and NAVAIR are working together to find and develop practical techniques to reduce jet noise on legacy tactical aircraft such as the F/A-18. Noise is an important issue for the Navy that has grown dramatically over the last number of years. The two most important issues are the hearing loss induced during operations of these aircraft on aircraft carriers and the impact to communities around Naval Air Bases and training sites. A near term noise reduction goal of 3 dB has been established by NAVAIR as the first step in a much longer term plan to significantly reduce the noise felt in both of these situations. A near term solution for noise reduction implies that it can be implemented in the existing fleet with relatively little impact to the current air vehicle and the way it is operated, deployed, maintained, and funded. These constraints quickly limit the magnitude and types of changes that can be made to legacy engines or exhaust systems. In 2009, a static acoustic test on an F404 engine demonstrated that chevrons are equally effective at reducing noise all the way to full afterburner conditions. This test also measured thrust and the chevrons were demonstrated to result in very minimal performance impact at sea level static conditions. These two results are very important, as this was the first demonstration at full scale of practical noise reduction at afterburner conditions with minimal thrust impact. This paper will report on this latest test.

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Arnulfo, Luca, and Pericles Pilidis. "Assessment of Remote Lift Fan Jet Engines." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0151.

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The design of an Advanced Short Take-Off, Vertical Landing (ASTOVL) poses a major challenge. A successful aircraft of this type with a well integrated airframe and power plant must compete with Conventional Take-Off and Landing (CTOL) aircraft in the combat arena, while keeping the advantage of operations from short fields and small aircraft carriers. To achieve a performance similar to those of CTOL planes, the recourse to a variable cycle engine appears to be a suitable solution for ASTOVL aircraft. One such design is the remote lift fan engine. In this paper several alternatives are discussed and four engine designs based on a high performance low bypass core engine, exploiting the opportunity of variable cycle, are studied and compared. Two of these, the shaft driven and the Low Pressure Compressor exit bleed driven remote fans are predicted to be suitable alternatives.

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Rodrigues, F. F., M. Habibnia, and J. Pascoa. "Novel Propulsion System for VTOL Aircraft Based on Cycloidal Rotors Coupled With Wings." In ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fedsm2020-20292.

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Abstract Aircraft being capable of Vertical Take-off and Landing (VTOL) and hover are increasingly emerging in various critical and routine applications. Rescue missions in roads and environmental disasters, observance and monitoring-based carriers, surveillance and payload carriage in environments that require high maneuverability and controllability are just a few examples in which this type of aircraft is essential. Helicopters are the most typical aircraft in this kind, but concerning the thrusting mechanism, several alternatives are yet in hand. The tendency to equip aircraft with cycloidal rotors (shortly say, cyclorotors) as means of Vertical Take-Off and Landing thrusters has increased in recent years. These devices present several advantages such as considerably lower noise production and more stable hover and vertical displacements in comparison with conventional screw propellers as used in helicopters. In the present work a novel concept of propulsion system combining two cycloidal rotors with a pair-wing system is presented. A double wing assembly is designed to place in between the two cyclorotors on each side of the aircraft. The bottom wing is intended to divide the flow in two separate portions through the downwash region of the front cycloidal rotor. To improve the efficiency of this propulsion system, the implementation of plasma actuators in the pair-wing system will be experimentally studied. The concept behind this novel propulsion system is explained and numerical and experimental results, that support its operation concept, are presented.

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Leinster-Evans, S., J. Newell, and S. Luck. "Turning data into reality." In 14th International Naval Engineering Conference and Exhibition. IMarEST, 2018. http://dx.doi.org/10.24868/issn.2515-818x.2018.056.

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This paper looks to expand on the INEC 2016 paper ‘The future role of virtual reality within warship support solutions for the Queen Elizabeth Class aircraft carriers’ presented by Ross Basketter, Craig Birchmore and Abbi Fisher from BAE Systems in May 2016 and the EAAW VII paper ‘Testing the boundaries of virtual reality within ship support’ presented by John Newell from BAE Systems and Simon Luck from BMT DSL in June 2017. BAE Systems and BMT have developed a 3D walkthrough training system that supports the teams working closely with the QEC Aircraft Carriers in Portsmouth and this work was presented at EAAW VII. Since then this work has been extended to demonstrate the art of the possible on Type 26. This latter piece of work is designed to explore the role of 3D immersive environments in the development and fielding of support and training solutions, across the range of support disciplines. The combined team are looking at how this digital thread leads from design of platforms, both surface and subsurface, through build into in-service support and training. This rich data and ways in which it could be used in the whole lifecycle of the ship, from design and development (used for spatial acceptance, HazID, etc) all the way through to operational support and maintenance (in conjunction with big data coming off from the ship coupled with digital tech docs for maintenance procedures) using constantly developing technologies such as 3D, Virtual Reality, Augmented Reality and Mixed Reality, will be proposed. The drive towards gamification in the training environment to keep younger recruits interested and shortening course lengths will be explored. The paper develops the options and looks to how this technology can be used and where the value proposition lies.

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Stancliff, Robert C. "The General Electric LM5000 Marine Gas Turbine." In ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-gt-13.

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The General Electric LM5000 Marine Gas Turbine (see figure 1) intended for application to commercial and naval ships requiring high power (50,000 BHP nominal), high thermal efficiency (38 percent), and compact, marinized and relatively light weight prime movers is described. Ship candidates include Fast Support Ships, Aircraft Carriers [in a Combined Nuclear and Gas Turbine (CONAG) propulsion system], Battleships and large surface effect ships. The LM5000 marine gas turbine is a marinized version of the LM5000 industrial gas turbine which was derived in 1977 from the CF6-50 aircraft engine. The CF6-6 model of this family of aircraft engines was the parent of the over 648 GE LM2500 marine gas turbine now used on the ships of 18 navies, 32 ship programs and 247 ships of the world. Over 2100 of the CF6-50 mode] engines are used on over 600 of the McDonald Douglas DC-10, the Airbus A300 and the Boeing 747 aircraft. Since reliability and durability are dependent upon engine family experience, the hardware commonality with the CF6-50 aircraft engine is described as well as the associated experience, performance, installation and maintainability features.

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Reports on the topic "Aircraft carriers in art"

1

Read, John B., and III. Where are the Carriers? Meeting World Wide Commitments with a Reduced Aircraft Carrier Force. Fort Belvoir, VA: Defense Technical Information Center, February 1991. http://dx.doi.org/10.21236/ada236366.

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Oliver, III, and James D. Changing the Peacetime Deployment of Aircraft Carriers. Fort Belvoir, VA: Defense Technical Information Center, March 1993. http://dx.doi.org/10.21236/ada265373.

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Frewen, John. Harmonious OCEAN?: Chinese Aircraft Carriers and Australia's U.S. Alliance. Fort Belvoir, VA: Defense Technical Information Center, March 2010. http://dx.doi.org/10.21236/ada523896.

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TECH-PRO INC PANAMA CITY FL. New Mobile Fire Fighting Equipment for Shipboard Aircraft Carriers. Fort Belvoir, VA: Defense Technical Information Center, September 1986. http://dx.doi.org/10.21236/ada585714.

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Varland, Guy L. Marine Integration on Naval Aircraft Carriers -- What is the CINC Getting? Fort Belvoir, VA: Defense Technical Information Center, November 1993. http://dx.doi.org/10.21236/ada264433.

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Webb, Philip, and Sarah Fletcher. Unsettled Issues on Human-Robot Collaboration and Automation in Aerospace Manufacturing. SAE International, November 2020. http://dx.doi.org/10.4271/epr2020024.

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This SAE EDGE™ Research Report builds a comprehensive picture of the current state-of-the-art of human-robot applications, identifying key issues to unlock the technology’s potential. It brings together views of recognized thought leaders to understand and deconstruct the myths and realities of human- robot collaboration, and how it could eventually have the impact envisaged by many. Current thinking suggests that the emerging technology of human-robot collaboration provides an ideal solution, combining the flexibility and skill of human operators with the precision, repeatability, and reliability of robots. Yet, the topic tends to generate intense reactions ranging from a “brave new future” for aircraft manufacturing and assembly, to workers living in fear of a robot invasion and lost jobs. It is widely acknowledged that the application of robotics and automation in aerospace manufacturing is significantly lower than might be expected. Reasons include product variability, size, design philosophy, and relatively low volumes. Also, the occasional reticence due to a history of past false starts plays a role too. Unsettled Issues on Human-Robot Collaboration and Automation in Aerospace Manufacturing goes deep into the core questions that really matter so the necessary step changes can move the industry forward.

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