Log in

Relevant bibliographies by topics / Aircraft’s life / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Aircraft’s life.

Dissertations / Theses on the topic 'Aircraft’s life'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Aircraft’s life.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Ramesh, Aashish, and Gaurav Kalkur. "Fatigue life validation of aircraft materials." Thesis, Linköpings universitet, Mekanik och hållfasthetslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-170893.

Full text

Abstract:

Fatigue is one of the critical design aspects with immense significance where thefatigue life of a material can be stated as the number of cycles that a componentcan withstand under a particular type of loading without failure. The design processhas to include fatigue analysis in order to predict failure due to fatigue. This helpsin maintenance and servicing of a component reducing the chance of failure duringoperation of the component. Increased efficiency of predictive maintenance improvesthe life of the component.This thesis aims to study the relationship between the experimental, analytica

APA, Harvard, Vancouver, ISO, and other styles

2

Öhrn, Philip, and Markus Åstrand. "Direct Lift Control of Fighter Aircraft." Thesis, Linköpings universitet, Reglerteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-157464.

Full text

Abstract:

Direct lift control for aircraft has been around in the aeronautical industry for decades but is mainly used in commercial aircraft with dedicated direct lift control surfaces. The focus of this thesis is to investigate if direct lift control is feasible for a fighter aircraft, similar to Saab JAS 39 Gripen, without dedicated control surfaces. The modelled system is an aircraft that is inherently unstable and contains nonlinearities both in its aerodynamics and in the form of limited control surface deflection and deflection rates. The dynamics of the aircraft are linearised around a flight ca

APA, Harvard, Vancouver, ISO, and other styles

3

Erasmus, Daniel Jacobus. "The fatigue life cycle prediction of a light aircraft undercarriage." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1527.

Full text

Abstract:

The reliability of systems relies heavily on accurate fatigue life prediction of related components. Fatigue life prediction is a complicated process requiring the correct methodology to determine accurate and reliable predictions. The Palmgren – Miner damage accumulation hypothesis is widely used in determining the fatigue life of components exposed to variable loading conditions. Modifications have been made to this hypothesis trying to achieve a greater degree of accuracy, of these the Liu – Zenner modification has been the most successful. In this report the systematic process of fatigue l

APA, Harvard, Vancouver, ISO, and other styles

4

Henzler, Eric, and Mark Williams. "Is electronic life-cycle tracking of aircraft parts degrading readiness?" Thesis, Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/38944.

Full text

Abstract:

Approved for public release; distribution is unlimited.<br>The Naval Aviation Logistics Command Managed Information System (NALCOMIS), the current Navy and Marine Corps electronic tracking system for aircraft components, provides complete, up-to-date life-cycle information about aircraft and associated components to all maintenance agencies across the Naval Aviation Enterprise (NAE). By design, the system is meant to facilitate efficient receipt, repair, documentation, and transfer of all aircraft and components inducted into the maintenance cycle. However, many end users within the NAE still

APA, Harvard, Vancouver, ISO, and other styles

5

Crowley, Christopher Keith Aerospace Civil &amp Mechanical Engineering Australian Defence Force Academy UNSW. "Meeting the ageing aircraft challenge." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Aerospace, Civil and Mechanical Engineering, 2004. http://handle.unsw.edu.au/1959.4/38679.

Full text

Abstract:

&quotMeeting the ageing aircraft challenge&quot is not just about safety, not just about effectiveness, and not just about economy of support. It is about proactive and reactive optimization of all three service goals throughout long life cycles that span 20 or 30 years, or more, and typically, beyond the originally intended design life. It is therefore about organizational attitudes towards ongoing trend analysis and condition monitoring, and pervading cost benefit assessments of all forms of human innovation across what the author describes as 'the eight sustaining disciplines for long aero

APA, Harvard, Vancouver, ISO, and other styles

6

Goebel, James E. "Design of a lift fan engine for a heavy lift aircraft." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Dec%5FGoebel.pdf.

Full text

Abstract:

Thesis (M.S. in Aeronautical Engineering)--Naval Postgraduate School, December 2003.<br>Thesis advisor(s): Raymond Shreeve, E.R. Wood. Includes bibliographical references (p. 41). Also available online.

APA, Harvard, Vancouver, ISO, and other styles

7

Iskender, Hani. "Aircraft Simulator." Thesis, Linköping University, Department of Electrical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2936.

Full text

Abstract:

<p>At Saab Bofors Dynamics there are projects running which purpose are to develop simulators for various weapon systems like RBS 70. In order to manage creating real working simulators Saab Bofors Dynamics has to do more research and this final thesis is a part of this process.</p><p>This final thesis has been performed at Saab Bofors Dynamics in the department of modelling and simulation, RTRKM, in Karlskoga. The purpose was to develop a control algorithm which makes it possible for an aircraft to behave real when controlling through a joystick.</p><p>The conclusions show that further improv

APA, Harvard, Vancouver, ISO, and other styles

8

Alqetami, Isa Mohamed. "Life Cycle Management of Bahraini Amiri Air Force F-16 Aircraft." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA397511.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Holmberg, Gunnar. "On aircraft development : managing flexible complex systems with long life cycles /." Linköping : Univ, 2003. http://www.bibl.liu.se/liupubl/disp/disp2003/tek853s.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Liu, Ziqian. "Life cycle assessment of composites and aluminium use in aircraft systems." Thesis, Cranfield University, 2013. http://dspace.lib.cranfield.ac.uk/handle/1826/8573.

Full text

Abstract:

As a consequence of the gradually expanding aviation network, civil aircrafts are occupying an increasingly high proportion of the transport industry. Air transport now dominates the intercity rapid transit, long-distance passenger transport, international passenger and freight transport, and specific regional transport, advantaged as it is by fast, convenient, comfortable and safe options. Nevertheless, the potential adverse impact on the environment of air transport, specifically, in the case of this research, the pollutants generated during aircraft production remain a concern. Using the A3

APA, Harvard, Vancouver, ISO, and other styles

11

McClatchey, G. T. J. "An investigation into the fatigue life of laser welded aircraft structures." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412028.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Ali, Aidy. "Improving the fatigue life of aircraft components by using surface engineering." Thesis, University of Sheffield, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425571.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Doucet, Jeremy. "Fatigue life enhancement of aircraft structures through bonded crack retarders (BCR)." Thesis, Cranfield University, 2015. http://dspace.lib.cranfield.ac.uk/handle/1826/11279.

Full text

Abstract:

The trend in aircraft design is to produce greener airplanes through lighter structures and/or structures with extended life and reduced maintenance. Bonded crack retarders (BCR) are one of the solutions towards that objective. BCR are reinforcing straps bonded to the structure in order to improve the fatigue and damage tolerance properties of the assembly. The aim of this study was to demonstrate that the BCR hybrid technology – beneficial for upper wing cover – could also be applied to lower wing covers. The project also focused on evaluating BCR most important parameters. The fatigue life i

APA, Harvard, Vancouver, ISO, and other styles

14

Thokala, Praveen. "Life cycle cost modelling as an aircraft design decision support tool." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/72021/.

Full text

Abstract:

This report summarizes the work that has been carried out as part of the FLAVIIR project, a 5 year research program looking at technologies for future unmanned air vehicles. A novel classication of aircraft product defnition is utilised and a framework to estimate the life cycle cost of aircraft using the product definition is presented. The architecture to estimate the life cycle cost and the associated models are described. The acquisition costs are estimated using a hierarchical structure and a discrete simulation model is used to estimate the maintenance and operation costs. The acquisitio

APA, Harvard, Vancouver, ISO, and other styles

15

Duff, Jonathan B. "A service life analysis of U.S. Coast Guard C-130 aircraft." View report, 2003. http://handle.dtic.mil/100.2/ADA413132.

Full text

Abstract:

Thesis (M.S.)--Air Force Institute of Technology, 2003.<br>Title from title screen (viewed May 10, 2004). "March 2003." Vita. "AFIT/GAQ/ENS/03-02." "ADA413132"--URL. Includes bibliographical references (leaves 132-135). Also issued in paper format.

APA, Harvard, Vancouver, ISO, and other styles

16

Zhao, Wei. "Feature-Based Hierarchical Knowledge Engineering for Aircraft Life Cycle Design Decision Support." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14639.

Full text

Abstract:

The design process of aerospace systems is becoming more and more complex. As the process is progressively becoming enterprise-wide, it involves multiple vendors and encompasses the entire life-cycle of the system, as well as a system-of-systems perspective. The amount of data and information generated under this paradigm has increased exponentially creating a difficult situation as it pertains to data storage, management, and retrieval. Furthermore, the data themselves are not suitable or adequate for use in most cases and must be translated into knowledge with a proper level of abstraction.

APA, Harvard, Vancouver, ISO, and other styles

17

Woodford, Spencer. "The Minimisation of Combat Aircraft Life Cycle Cost through Conceptual Design Optimisation." Thesis, Cranfield University, 1999. http://hdl.handle.net/1826/3496.

Full text

Abstract:

In an effort to increase the cost-effectiveness of military equipment, a method has been developed to perform conceptual studies on combat aircraft, resulting in designs of specified capability optimised for minimum Life Cycle Cost (LCC). Consequently, the cost design loop can be considered as being closed, allowing the automated production of a consistent set of cost and performance data for different aircraft solutions. The design engineer can thus make informed, unbiased, design decisions, leading to a more efficient use of shrinking Defence budgets. Because of the vast scale to which the c

APA, Harvard, Vancouver, ISO, and other styles

18

Benchekchou, Boutaina. "Stresses around fasteners in composite aircraft structures and effects on fatigue life." Thesis, University of Southampton, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241160.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Lee, Hongchul. "Advanced aircraft service life monitoring method via flight-by-flight load spectra." Diss., Online access via UMI:, 2009.

Find full text

Abstract:

Thesis (Ph. D.)--State University of New York at Binghamton, Thomas J. Watson School of Engineering and Applied Science, Department of Mechanical Engineering, 2009.<br>Includes bibliographical references.

APA, Harvard, Vancouver, ISO, and other styles

20

Chen, Han Hua. "Effect of in-service aircraft mission variation on airline fleet management." Thesis, Cranfield University, 1996. http://dspace.lib.cranfield.ac.uk/handle/1826/10737.

Full text

Abstract:

The air transport markets affected by global economic climate and regional demand characteristics are evolving fairly dynamically. To cope with the evolving demand and to penetrate desired market segments, operators' usage of aircraft has been getting more and more dynamic with increased deviation from the originally designed mission objectives. The objective of this research is to investigate the effects of in-service rrusslon variation on aircraft structural performance so as to provide airlines with a more realistic approach toward better fleet management. During the research, the scenarios

APA, Harvard, Vancouver, ISO, and other styles

21

Lim, Dongwook. "A systematic approach to design for lifelong aircraft evolution." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28280.

Full text

Abstract:

Thesis (M. S.)--Aerospace Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Mavris, Dimitri; Committee Member: Bishop, Carlee; Committee Member: Costello, Mark; Committee Member: Nam, Taewoo; Committee Member: Schrage, Daniel.

APA, Harvard, Vancouver, ISO, and other styles

22

Beck, James Michael. "Applying theory of constraints to an aircraft remanufacturing line." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA277987.

Full text

Abstract:

Thesis (M.S. in Management) Naval Postgraduate School, December 1993.<br>Thesis advisor(s): Shu S. Liao ; Martinus Sarigul-Klijn. "December 1993." Includes bibliographical references. Also available online.

APA, Harvard, Vancouver, ISO, and other styles

23

Arumugam, Murali. "VOD and live TV channels for aircraft broadband networks." Thesis, Wichita State University, 2008. http://hdl.handle.net/10057/1968.

Full text

Abstract:

Broadband aircraft communications have come long way from web surfing to the very recent live TV channels by the Qatar airways. This thesis has gone one step further by analyzing the possibility of video on demand and live TV channels using single antenna for IFE options provided by the aircraft. With TVOD (true video on demand), passengers have the option to select a movie or TV channel from content which are hosted in the ground server at any time with the start, pause and stop functionality. As opposed to the prescheduled programs which are already in place. The research work defines the ch

APA, Harvard, Vancouver, ISO, and other styles

24

Arumugam, Murali Pendse Ravindra. "VOD and live TV channels for aircraft broadband networks." A link to full text of this thesis in SOAR, 2008. http://hdl.handle.net/10057/1968.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Che, Yunxiang, and S3145469@student rmit edu au. "Aging structure life prediction and reliability assessment." RMIT University. SAMME, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091113.114541.

Full text

Abstract:

Confront with the serious aging problem in aircraft structure field, the profession was tasked to unveil the mysterious in the mechanism of aging. In decades, many endeavours were put into different subjects such as, fatigue and crack calculation, corrosion analysis, reliability evaluation, life prediction, structure monitor and protection, structure repair, etc. In an effort of developing a reasonable model for life prediction and reliability evaluation, a wide range of topics in the field of aging structure reliability are reviewed. Many existing methods and tools are carefully studied

APA, Harvard, Vancouver, ISO, and other styles

26

Kousky, Todd R. "Conventional and probabilistic fatigue life prediction methodologies relevant to the P-3C aircraft." Thesis, Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8154.

Full text

Abstract:

Approved for public release; distribution is unlimited<br>This thesis investigates conventional and probabilistic methodologies for predicting the fatigue life of critical components in the P-3C aircraft. A probabilistic damage convolution model was developed with the intent of providing quantitative predictions of life-variability. Traditional methodologies, which are based nominally on median values, lack the capacity to adequately assess variability. Aluminum 7075-T6 was tested using a fatigue Material Test System. A fatigue data base was compiled from tests conducted at the Naval Postgradu

APA, Harvard, Vancouver, ISO, and other styles

27

Keivanpour, Samira. "An integrated approach to value chain analysis of end of life aircraft treatment." Doctoral thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/25840.

Full text

Abstract:

Dans cette thèse, on propose une approche holistique pour l’analyse, la modélisation et l’optimisation des performances de la chaîne de valeur pour le traitement des avions en fin de vie (FdV). Les recherches réalisées ont débouché sur onze importantes contributions. Dans la première contribution, on traite du contexte, de la complexité, de la diversité et des défis du recyclage d’avions en FdV. La seconde contribution traite du problème de la prédiction du nombre de retraits d’avions et propose une approche intégrée pour l’estimation de ce nombre de retraits. Le troisième et le quatrième arti

APA, Harvard, Vancouver, ISO, and other styles

28

Toufexis, Dimitrios. "Aircraft maintenance and development of a performance-based creep life estimation for aero engine." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/7750.

Full text

Abstract:

For any machine designed to generate power, or to fulfill its functions in general, maintenance actions will have an impact on many aspects of its overall capabilities, especially its performance and the length of its useful life. Since these are vital in order to generate maximum profit, the maintenance actions that affect them must be given serious consideration. For this reason, this research aims to propose a method that will enhance the cost saving potential with more accurately determined maintenance intervals and greater exploitation of the remaining life of the components by utilizing

APA, Harvard, Vancouver, ISO, and other styles

29

Walter, Richard W. "Study of statistical variations of load spectra and material properties on aircraft fatigue life." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/24056.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Whittle, Richard Geoffrey. "The development of preliminary design and assessment methodologies for enhanced combat aircraft supportability." Thesis, Imperial College London, 1997. http://hdl.handle.net/10044/1/7831.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Borer, Chris Joseph. "An analysis of the aircraft engine Component Improvement Program (CIP) a life cycle cost approach /." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA243346.

Full text

Abstract:

Thesis (M.S. in Science in Management)--Naval Postgraduate School, December 1990.<br>Thesis Advisor(s): Moore, Thomas P. Second Reader: Crawford, Alice. "December 1990." Description based on title screen as viewed on April 01, 2010. DTIC Descriptor(s): Aircraft engines, life cycle costs, maintenance, computerized simulation, organizations, costs, aircraft equipment, naval aircraft, reliability, theses, aircraft, cost effectiveness DTIC Identifier(s): Return on investment, engine Component Improvement Program(CIP) Author(s) subject terms: Aircraft engine cost; lifecycle cost; return on investme

APA, Harvard, Vancouver, ISO, and other styles

32

Smith, Phillip Raymond. "Application of Eigenstructure Assignment to the control of powered lift combat aircraft." Thesis, University of Southampton, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277796.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Dova, Vincent H. "Software-defined avionics and mission systems in future vertical lift aircraft." Thesis, Monterey, California: Naval Postgraduate School, 2015. http://hdl.handle.net/10945/45181.

Full text

Abstract:

Approved for public release; distribution is unlimited<br>Integrated Modular Avionics, or IMA, has been a notable trend in aircraft avionics for the past two decades, promising significant size, weight, and power-consumption (SWAP) gains, radically increased sensors fusion, and streamlined support costs. Despite the demonstrated success of IMA systems in commercial airliners such as the Airbus A380 and the Boeing 787, military rotorcraft in the service of the United States Joint services have yet to benefit significantly from this technology. At long last, that may be about to change. The Futu

APA, Harvard, Vancouver, ISO, and other styles

34

Trapani, Giuseppe. "The design of high lift aircraft configurations through multi-objective optimisation." Thesis, Cranfield University, 2014. http://dspace.lib.cranfield.ac.uk/handle/1826/8831.

Full text

Abstract:

An approach is proposed in this work to support the preliminary design of High-Lift aircraft configurations through the use of Multi-Objective optimisation tech¬niques. For this purpose a framework is developed which collates a Free-Form De¬formation parametrisation technique, a number of Computational Fluid Dynamics suites of different fidelity levels, a rapid aero-structure coupling procedure and two multi-objective optimisation techniques, namely Multi-Objective Tabu Search and Non-dominated Sorting Genetic Algorithm-II. The proposed optimisation framework is used for the execution of sever

APA, Harvard, Vancouver, ISO, and other styles

35

Qiao, Yuqing. "Effect of wing flexibility on aircraft flight dynamics." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/7280.

Full text

Abstract:

The purpose of this thesis is to give a preliminary investigation into the effect of wing deformation on flight dynamics. The candidate vehicle is FW-11 which is a flying wing configuration aircraft with high altitude and long endurance characteristics. The aeroelastic effect may be significant for this type of configuration. Two cases, the effect of flexible wing on lift distribution and on roll effectiveness during the cruise condition with different inertial parameters are investigated. For the first case, as the wing bending and twisting depend on the interaction between the wing structura

APA, Harvard, Vancouver, ISO, and other styles

36

Wang, Lina. "A multi-disciplinary optimisation model for passenger aircraft wing structures with manufacturing and cost considerations." Thesis, University of Salford, 2000. http://usir.salford.ac.uk/26957/.

Full text

Abstract:

In traditional aircraft wing structural design, the emphasis has been on pursuing the minimum weight or improved performance. The manufacturing complexity or cost assessments are rarely considered because it is usually assumed that the minimum weight design is also the minimum cost design. However, experience from industry has shown that this is not necessarily the case. It has been realised that in the cases where no manufacturing constraints are imposed, the extra machining cost can erode the advantages of the reduced weight. As manufacturing cost includes material cost and machining cost, w

APA, Harvard, Vancouver, ISO, and other styles

37

Stitt, Alice C. "A physics-based maintenance cost methodology for commercial aircraft engines." Thesis, Cranfield University, 2014. http://dspace.lib.cranfield.ac.uk/handle/1826/13134.

Full text

Abstract:

A need has been established in industry and academic publications to link an engine's maintenance costs throughout its operational life to its design as well as its operations and operating conditions. The established correlations between engine operation, design and maintenance costs highlight the value of establishing a satisfactory measure of the relative damage due to different operating conditions (operational severity). The methodology developed in this research enables the exploration of the causal, physics-based relationships underlying the statistical correlations in the public domain

APA, Harvard, Vancouver, ISO, and other styles

38

McCormick, Daniel John. "An Analysis of Using CFD in Conceptual Aircraft Design." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/33409.

Full text

Abstract:

The evaluation of how Computational Fluid Dynamics (CFD) package may be incorporated into a conceptual design method is performed. The repeatability of the CFD solution as well as the accuracy of the calculated aerodynamic coefficients and pressure distributions was also evaluated on two different wing-body models. The overall run times of three different mesh densities was also evaluated to investigate if the mesh density could be reduced enough so that the computational stage of the CFD cycle may become affordable to use in the conceptual design stage. A farfield method was derived and us

APA, Harvard, Vancouver, ISO, and other styles

39

Khani, Nqobile. "Influence of airport factors and mission fuel burn optimised aircraft trajectories on severity and engine life." Thesis, Cranfield University, 2014. http://dspace.lib.cranfield.ac.uk/handle/1826/9242.

Full text

Abstract:

The continuous growth of air transport has raised concerns about global aircraft fuel consumption, emissions and noise. Industry’s efforts have identified that to reduce future emissions and the impact of aircraft operations on the environment will require contribution from: a) New technologies with better efficiency b) Improved asset management and c) Greener manufacturing and recycling processes. This research falls under asset management and involves aircraft trajectory optimisation. Most aircraft trajectory optimisation studies concentrate on optimising fuel burn, emissions and noise. Fuel

APA, Harvard, Vancouver, ISO, and other styles

40

Andersson, Daniel. "The performance of an iced aircraft wing." Thesis, Högskolan Väst, Institutionen för ingenjörsvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-4098.

Full text

Abstract:

The goal of this thesis work has been to develop and manufacture an ice layer which was to be mounted on the tip of a scaled down wing model. The iced wing should be tested in a wind tunnel and aerodynamic comparisons should be made to the same wing without ice.The development of the ice was carried out as a modified product development process. The main differences are that there is no costumer and that the actual shape and functions of the product are more or less predetermined. The challenge was to find the best way to create the ice layer and how to mount it to the wing without damaging it

APA, Harvard, Vancouver, ISO, and other styles

41

Hövelmann, Andreas. "Aerodynamic investigations of noise-reducing high-lift systems for passenger transport aircraft." Thesis, KTH, Flygdynamik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-32875.

Full text

Abstract:

This diploma thesis captures the three-dimensional implementation of noise-reducing high-liftsystems. A parametric CAD model is developed for the FNG aircraft and different high-lift configurationsare built up. In the course of research, these configurations are designed based onformerly obtained two-dimensional results of DLR’s LEISA project featuring the design of a verylong chord slat (VLCS), whose slat shape resulted in a favourable aeroacoustic behaviour at noiserelevantapproach conditions. The high-lift systems derived in this thesis differ in the spanwisevariation of the slat geometry p

APA, Harvard, Vancouver, ISO, and other styles

42

Butler, Patrick C. "Value proposition analysis for medium- and heavy- lift cargo unmanned aircraft systems." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122591.

Full text

Abstract:

Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2019, In conjunction with the Leaders for Global Operations Program at MIT<br>Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2019, In conjunction with the Leaders for Global Operations Program at MIT<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 99-109).<br>The majority of current unmanned aircraft system (UAS) research is focusing on small UAS operations at low altitude over rural and underpopulated areas. There is a gap

APA, Harvard, Vancouver, ISO, and other styles

43

Flynn, G. A. "Experimental investigation of attachment line transition on a large swept cylinder." Thesis, Cranfield University, 1997. http://hdl.handle.net/1826/3915.

Full text

Abstract:

Transition of the attachment fine boundary layer was investigated using a large swept cylinder. Results for natural transition and transition tripping with two-dimensional trip wires were simila to those obtained by Poll using a similar, but smaller, model. ]Lower displacement thickness Reynolds numbers but larger trip sizes, than for the flat-plate boundary layer, were required for transition. The investigation of transition tripping was then extended to involve three-dimensional trips. The attachment line boundary layer was less susceptible to three-dimensional trips than to two-dimensional

APA, Harvard, Vancouver, ISO, and other styles

44

Saddington, Alistair J. "Mutual Interference Between Jets and Intakes in STOVL Aircraft." Thesis, Department of Aerospace, Power and Sensors, 2009. http://hdl.handle.net/1826/3895.

Full text

Abstract:

During wind tunnel testing of jet-lift, short take-off and vertical landing (STOVL) aircraft it is usual to simulate the jet efflux but not the intake flows. The intakes, which are commonly faired over or are unpowered, are generally tested in separate wind tunnel experiments. The forces acting on the wind tunnel model are determined by the linear addition of the forces obtained from the two separate tests. There is some doubt as to whether this is a valid approach. A systematic experimental investigation was, therefore, conducted to determine the magnitude of any jet/intake interference effec

APA, Harvard, Vancouver, ISO, and other styles

45

Tian, Hai, Tom Trojak, and Charles Jones. "DATA COMMUNICATIONS OVER AIRCRAFT POWER LINES." International Foundation for Telemetering, 2005. http://hdl.handle.net/10150/604922.

Full text

Abstract:

ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>This paper introduces a study of the feasibility and initial hardware design for transmitting data over aircraft power lines. The intent of this design is to significantly reduce the wiring in the aircraft instrumentation system. The potential usages of this technology include Common Airborne Instrumentation System (CAIS) or clock distribution. Aircraft power lines channel characteristics are

APA, Harvard, Vancouver, ISO, and other styles

46

Al-Kayiem, Hussain Hammod. "Separated flow on a high lift wing : a study of the characteristics of the separated flow region on a lift wing under normal and wing/body conditions by means of a flying hot-wire technique." Thesis, University of Bradford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235558.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Ho, Derrick. "Augmented Lift by Tip Thruster of an Asymmetric Single Blade Rotary Wing UAV." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/16593.

Full text

Abstract:

This thesis presents investigations on the potential lift augmentation of a Tip Thruster for driving a rotating wing (lifting surface) in a monocopter configuration, to take advantage of the higher efficiency potential for larger lifting surfaces. This has the ability of significantly increasing lift force than what would otherwise be possible by the small Tip Thrusters. Furthermore, low thrust-to-weight hover ability and the exemplification of the monocopter concept can be achieved by the use of a Tip Thruster. Blade Element Theory (BET) methods were developed as a tool for rapid monocopter p

APA, Harvard, Vancouver, ISO, and other styles

48

Knepper, Angela Marie. "Examination of three candidate technologies for high-lift devices on an aircraft wing." Thesis, Cranfield University, 2005. http://hdl.handle.net/1826/1058.

Full text

Abstract:

A research programme was initiated to examine three candidate high-lift technologies, which would, if implemented, simplify the mechanical complexity of the multiple component trailing-edge devices traditionally employed on civil transport aircraft. Experimental studies were undertaken with the aim of examining each technology in terms of its potential to favourably influence boundary layer development and improve the aerodynamic characteristics of a high-lift configuration. Preliminary studies of triangular serrated geometries, at the trailing edge of a modified flat plate, highlighted that t

APA, Harvard, Vancouver, ISO, and other styles

49

Li, Daxin. "Multi-objective design optimization for high-lift aircraft configurations supported by surrogate modeling." Thesis, Cranfield University, 2013. http://dspace.lib.cranfield.ac.uk/handle/1826/8468.

Full text

Abstract:

Nowadays, the competition among airlines seriously depend upon the saving operating costs, with the premise that not to degrade its services quality. Especially in the face of increasingly scarce oil resources, reducing fleets operational fuel consumption, is an important means to improve profits. Aircraft fuel economy is determined by operational management strategies and application technologies. The application of technologies mainly refers to airplane’s engine performance, Weight efficiency and aerodynamic characteristics. A market competitive aircraft should thoroughly consider to all of

APA, Harvard, Vancouver, ISO, and other styles

50

Gastelum, Victoria Elena 1973. "Application of lean manufacturing technique for the design of the aircraft assembly line." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/8478.

Full text

Abstract:

Thesis (S.M.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2002.<br>"June 2002."<br>Includes bibliographical references (p. 103-104).<br>The final assembly line for the Boeing Commercial Airplanes 717 Program is currently implementing "The 9 Tactics", a methodology based on the lean manufacturing principles to transform the current processes to continuous moving lines. The first two tactics, Value Stream Mapping and Balancing the Line define the manufacturing system configuration (the qu

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!