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Relevant bibliographies by topics / Landing phase

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Academic literature on the topic 'Landing phase'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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Journal articles on the topic "Landing phase"

1

Koh, Timothy J., and James G. Hay. "Landing Leg Motion and Performance in the Horizontal Jumps II: The Triple Jump." International Journal of Sport Biomechanics 6, no. 4 (1990): 361–73. http://dx.doi.org/10.1123/ijsb.6.4.361.

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The motions of the landing leg preceding the support phases of the hop, step, and jump, thought to be important in the triple jump, are described. Film analysis of 16 elite male triple jumpers competing in the 1986 and 1987 TAC (U.S. national) Championships showed that backward sweeping, or “active,” landings were used prior to each support phase. A mathematical model showed that muscle action reduced the forward horizontal velocity of the landing foot during each landing. There were no statistically significant correlations of measures of landing leg motion with measures of performance. The l

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Weinhandl, Joshua T., Mukta Joshi, and Kristian M. O’Connor. "Gender Comparisons between Unilateral and Bilateral Landings." Journal of Applied Biomechanics 26, no. 4 (2010): 444–53. http://dx.doi.org/10.1123/jab.26.4.444.

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The increased number of women participating in sports has led to a higher knee injury rate in women compared with men. Among these injuries, those occurring to the ACL are commonly observed during landing maneuvers. The purpose of this study was to determine gender differences in landing strategies during unilateral and bilateral landings. Sixteen male and 17 female recreational athletes were recruited to perform unilateral and bilateral landings from a raised platform, scaled to match their individual jumping abilities. Three-dimensional kinematics and kinetics of the dominant leg were calcul

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Liu, Yinfu, Ruishan Sun, and Peng He. "Research on the Pre-Warning Method of Aircraft Long Landing Based on the XGboost Algorithm and Operation Characteristics Clustering." Aerospace 10, no. 5 (2023): 409. http://dx.doi.org/10.3390/aerospace10050409.

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Long landing hazardous events (long landings) are regarded as the most common unsafe events during an aircraft’s landing phase and are significantly influenced by pilots’ leveling operations. This paper proposes a pre-warning method for long aircraft landings based on operation characteristics clustering to better prevent the occurrence of long landing events and develop pre-warning technology for long aircraft landings applicable to actual civil aviation aircraft operations. Based on the quick access recorder (QAR) flight data of a Boeing B737-800 fleet, the Gaussian mixture model (GMM) clust

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Kamffer, Lenthea, Henriette V. Hammill, Yolandi Willemse, and Mark Kramer. "Multidirectional Landing Kinetics, Stabilisation Times, and Associated Isokinetic Knee Torques of High-Level Female Netball Players." Applied Sciences 13, no. 3 (2023): 1261. http://dx.doi.org/10.3390/app13031261.

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Netball is a multidirectional sport afflicted by a relatively high proportion of lower-extremity injuries. The purpose of this study was to evaluate the relationships between multidirectional landing stabilisation times, unilateral landing kinetics, and isokinetic knee joint torques in elite female netball players. A total of 15 players volunteered for the study (age: 20.80 ± 1.42 years; height: 1.75 ± 0.06 m; body mass: 71.69 ± 13.58 kg). All players completed a minimum of 25 multidirectional, unilateral landing tasks, as well as isokinetic dynamometry, to evaluate both concentric and eccentr

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Li, Yumeng, He Wang, and Kathy J. Simpson. "Chronic Ankle Instability Does Not Influence Tibiofemoral Contact Forces During Drop Landings Using a Musculoskeletal Model." Journal of Applied Biomechanics 35, no. 6 (2019): 426–30. http://dx.doi.org/10.1123/jab.2018-0436.

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The purpose of the study was to compare the tibiofemoral contact forces of participants with chronic ankle instability versus controls during landings using a computer-simulated musculoskeletal model. A total of 21 female participants with chronic ankle instability and 21 pair-matched controls performed a drop landing task on a tilted force plate. A 7-camera motion capture system and 2 force plates were used to test participants’ lower-extremity biomechanics. A musculoskeletal model was used to calculate the tibiofemoral contact forces (femur on tibia). No significant between-group differences

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Xu, Datao, Xuanzhen Cen, Meizi Wang, et al. "Temporal Kinematic Differences between Forward and Backward Jump-Landing." International Journal of Environmental Research and Public Health 17, no. 18 (2020): 6669. http://dx.doi.org/10.3390/ijerph17186669.

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Backward jump-landing during sports performance will result in dynamic postural instability with a greater risk of injury, and most research studies have focused on forward landing. Differences in kinematic temporal characteristics between single-leg and double-leg backward jump-landing are seldom researched and understood. The purpose of this study was to compare and analyze lower extremity kinematic differences throughout the landing phases of forward and backward jumping using single-leg and double-leg landings (FS and BS, FD and BD). Kinematic data were collected during the landing phases

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Ali, Afrah A., Nizar H. Abbas, and Ahmed Hameed Kaleel. "Automatic Aircraft Landing System: A Review." Journal of Engineering 30, no. 9 (2024): 165–89. http://dx.doi.org/10.31026/j.eng.2024.09.09.

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The aircraft landing phase, marking the finishing of a flight plane, is a critical yet dangerous aerial maneuver. Even though it might seem simple, predicting the complexities of performance during landing presents a big challenge due to the dynamic characteristics of the phase, interaction with piloting methods, as well as inherent uncertainties in aerodynamics. Landing is executed in close proximity to the ground at reduced airspeed, the landing phase entails an escalated safety risk. Notably, incidents and accidents, particularly overruns where aircraft fail to slow sufficiently on the runw

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Duan, Lian, Yuan Gao, Feng Gao, Yang Sun, and Naiyuan Tian. "Analysis of the impact of different landing heights and lateralities on lower limb joint load based on statistical parametric mapping." PLOS One 20, no. 5 (2025): e0324656. https://doi.org/10.1371/journal.pone.0324656.

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This study aimed to investigate the effects of landing height and limb laterality on lower limb joint loading using Statistical Parametric Mapping (SPM), thereby providing insights for injury prevention and optimizing performance in dynamic sports. Twenty male participants were assessed using the Qualisys 3D motion capture system and Kistler 3D force plates during landings from 30 cm and 45 cm on both dominant and non-dominant legs. No significant interaction effects between landing side and height were observed, but landing on the non-dominant leg increased the ankle joint internal rotation m

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Li, Yumeng, He Wang, and Kathy J. Simpson. "Chronic Ankle Instability Does Not Influence Tibiofemoral Contact Forces during Drop Landings." Proceedings 49, no. 1 (2020): 5. http://dx.doi.org/10.3390/proceedings2020049005.

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Chronic ankle instability (CAI) is a very common sequela after ankle sprains. Previous studies observed some knee biomechanical and neuromuscular alterations of CAI that could potentially relate to the knee injury mechanism during landings. However, to our knowledge, no studies have assessed the tibiofemoral contact forces for individuals with CAI. The purpose of the study was to compare the tibiofemoral contact forces of participants with CAI versus controls during landings using a computer-simulated musculoskeletal model. Twenty-one female participants with CAI and 21 pair-matched controls p

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McNitt-Gray, Jill L., Takashi Yokoi, and Carl Millward. "Landing Strategies Used by Gymnasts on Different Surfaces." Journal of Applied Biomechanics 10, no. 3 (1994): 237–52. http://dx.doi.org/10.1123/jab.10.3.237.

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In this study, landing strategies of gymnasts were hypothesized to change with different landing surfaces. This hypothesis was tested by comparing the kinematics and reaction force-time characteristics of two-foot competition-style drop landings performed by male and female collegiate gymnasts onto three surfaces (soft mat, stiff mat, no mat). Significantly lower peak vertical forces, longer landing phase times, and greater knee and hip flexion were observed between the no mat condition and the mat conditions. Knee flexion and peak knee flexion velocities were also observed to be significantly

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Dissertations / Theses on the topic "Landing phase"

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Wellons, William Lee. "A shipboard global positioning system carrier phase interferometric aircraft flight reference system." Ohio : Ohio University, 1994. http://www.ohiolink.edu/etd/view.cgi?ohiou1179860957.

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Volný, Michael. "Reactive and soft landing of polyatomic gas-phase ions on plasma-treated metal surfaces /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/8650.

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Yildiz, Guray. "Dynamic Approach To Wind Sensitive Optimum Cruise Phase Flight Planning." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615098/index.pdf.

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A Flight Management System (FMS) performs 4 Dimensional flight planning<br>Lateral Planning (Calculation of the latitude and longitudes of waypoints), Vertical Planning (Calculation of the altitudes of waypoints) and Temporal Planning(Calculation of Estimated Time of Arrival). Correct and accurate calculation of4D flight path and then guiding the pilot/airplane to track the route in specified accuracy limits in terms of lateral (i.e Required Navigational Performance RNP), vertical (Reduced Vertical Seperation Minima RVSM), and time (Required Time of Arrival RTA) is what FMS performs in brief.

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Lee, Kyongsun. "Effects of flight factors on pilot performance, workload, and stress at final approach to landing phase of flight." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4564.

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Similarly, the levels of a gliding angle showed the statistical difference on the performance, workload, and stress (HRV, TLX, and LP: all are p less than] .05). During the flight with 4.5 degree, the pilots showed lower performance with higher workload and stress. However, the levels of the flight experience did not have any influence on the performance, workload, and stress levels (AGPTP, LP, TLX, HRV: all are p greater than] .05). In conclusion, flying in Populated area and flying with a 4.5 degree gliding angle increases the workload and stress level of the pilots. In addition, when the pi

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Благая, Людмила Володимирівна, та Liudmyla V. Blahaia. "Модель функціонування системи «пілот–літак» при управлінні рухом на етапі посадки". Thesis, Національний авіаційний університет, 2021. https://er.nau.edu.ua/handle/NAU/52288.

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Розроблено стохастичну математичну модель діяльності ергатичної системи «пілот-літак» на етапі заходу на посадку як системи масового обслуговування, яка об’єднує модельні уявлення станів людини-оператора і технічної частини системи в єдину модель. Результати розробленого програмного забезпечення показали, що параметри, отримані за моделлю, відповідають параметрам польоту, отриманим з системи реєстрації параметрів літака на режимі заходу на посадку. Результати удосконалення математичної моделі «Узагальнена робоча характеристика людини-оператора» дали змогу досліджувати системні характеристики

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Ravetta, Patricio A. "LORE Approach for Phased Array Measurements and Noise Control of Landing Gears." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/29975.

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A novel concept in noise control devices for landing gears is presented. These devices consist of elastic membranes creating a fairing around the major noise sources. The purpose of these devices is to reduce wake interactions and to hide components from the flow, thus, reducing the noise emission. The design of these fairings was focused on the major noise sources identified in a 777 main landing gear. To find the major noise sources, an extensive noise source identification process was performed using phased arrays. To this end, phased array technologies were developed and a 26%-scale 777 ma

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Puumala, Rodney. "Ski jumping flight, a kinematic analysis of the mid-flight and preparation for landing phases." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0025/MQ52073.pdf.

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Remillieux, Marcel Christophe. "Aeroacoustic Study of a Model-Scale Landing Gear in a Semi-Anechoic Wind Tunnel." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/31674.

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An aeroacoustic study was conducted on a 26%-scale Boeing 777 main landing gear in the Virginia Tech (VT) Anechoic Stability Wind Tunnel. The VT Anechoic Stability Wind Tunnel allowed noise measurements to be carried out using both a 63-elements microphone phased array and a linear array of 15 microphones. The noise sources were identified from the flyover view under various flow speeds and the phased array positioned in both the near and far-field. The directivity pattern of the landing gear was determined using the linear array of microphones. The effectiveness of 4 passive noise control

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Bouchouireb, Hamza. "Identification and modelling of noise sources on a realisticnose landing gear using phased array methods applied tocomputational data." Thesis, KTH, MWL Marcus Wallenberg Laboratoriet, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209186.

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Due to the recent development of quieter turbofan engines, airframe noise has started to emerge asthe most important noise source. This is particularly true during the approach/landing phase, whenthe engines are operated at low-thrust levels. In order to meet future noise level regulations, thecharacterization and subsequent reduction of landing gear induced noise is necessary. Wind-tunnelaeroacoustic tests have always been the favoured method for assessing and studying the noise generatedby landing gears, but their prohibitive cost has steered the attention towards numerical methods.Since dir

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Chuang, Sheng-Wei, and 莊聖維. "Different types of Brace Worn on Biomechanical Analysis During Landing Phase." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/89765276797341663409.

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碩士<br>國立臺北教育大學<br>體育學系碩士班<br>98<br>OBJECTIVES: To investigate involvement of different brace during landing phase on the Kinematic and kinetic parameters. Methods: Eight healthy without any history of lower limb pain of adult men (age 18.5 ± 0.47 years, height 177.63 ± 5.99 cm, weight 66.5 ± 3.12 kg) for the study. A Mega Speed Ms30k high-speed camera (100Hz), An AMTI force platform (1000Hz), Biovision EMG apparatus (1000Hz) and 50g dual-axis accelerometer. Synchronous capture landing phase motion data, and analysis parameters for the buffer period. Video motion analysis software to Kwon3D pro

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Books on the topic "Landing phase"

1

Croll, J. B. Flight evaluation of curved MLS precision approaches in a Twin Otter aircraft: Phase II. National Research Council Canada, Institute for Aerospace Research, 1991.

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Center, Ames Research, ed. Phase 4 static tests of the J-97 powered, external augmentor V/STOL model at the NASA, Ames Research Center, November 1983. National Aeronautics and Space Administration, Ames Research Center, 1988.

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Latanowicz, Jerzy. Analysis of the fish landing complex activities and future commercial viability against the background of the fish marketing system in the Bahamas: A report prepared for the fisheries development project (Phase II). Food and Agriculture Organization, 1985.

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Lochbihler, Bethany. Syntactic domain types and PF effects. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198778264.003.0004.

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This chapter proposes a distinction between syntactic phases headed by C and D as final, in contrast to other non-final phases. Final phases act as stronger boundaries for head movement and provide final landing sites for A′-movement, but non-final phases, while still constituting spell-out domains, impose weaker boundaries. This chapter particularly investigates the phonological effects of final and non-final phases in Ojibwe, and the different processes that can apply at the spell-out of each type of domain. An analysis is provided for an ordering paradox between palatalization and apocope,

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Agha-Hossein, Michelle, and Building Services Research and Information Association Staff. Soft Landings Framework 2018: Six Phases for Better Buildings. Building Services Research & Information Association, 2018.

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Egedi, Barbara. Word order change at the left periphery of the Hungarian noun phrase. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198747307.003.0005.

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This chapter studies the determination and the distribution of possessive constructions from Old to Modern Hungarian. The grammaticalization of the definite article in well-defined contexts had structural consequences, the most salient of which is the emergence of a new strategy for demonstrative modification, which is called determiner doubling throughout the paper. Word order variation arises due to the determiners’ interference with the possessor expressions at the left periphery of the noun phrase. The newly added demonstratives first adjoined to the noun phrase in a somewhat looser fashio

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Book chapters on the topic "Landing phase"

1

Wei, Zhenyu, Lin Ma, Kexin Wang, and Zhijiang Shao. "Simultaneous Trajectory Optimization for Adaptive Powered Descent." In Autonomous Trajectory Planning and Guidance Control for Launch Vehicles. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0613-0_6.

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AbstractThe powered descent phase is the terminal phase of the planetary descent and landing mission, where the required direction and magnitude of the thrust engine are determined to steer the spacecraft to meet the pre-determined targeting condition at the end, such as touchdown at the designated landing site with the required velocity [12].

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Bansmann, Joachim, Armin Kleibert, Hendrik Bettermann, and Mathias Getzlaff. "In-Flight and Postdeposition Manipulation of Mass-Filtered Nanoparticles under Soft-Landing Conditions." In Gas-Phase Synthesis of Nanoparticles. Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527698417.ch17.

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Calderón, Juan M., Wilfrido Moreno, and Alfredo Weitzenfeld. "Fuzzy Variable Stiffness in Landing Phase for Jumping Robot." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-28031-8_45.

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Wang, Zhi, Ming Yang, Haixia Hu, Wenqiang Dong, and Maomao Li. "Landing Footprint Computation and Simulation for Spacecraft of Reentry Phase." In Lecture Notes in Electrical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4163-6_46.

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Wang, Cuilian, Yin Li, Ke Li, and Dong Zhou. "Visual Image Downtransmission of Landing Phase for Deep Space Explorers." In Wireless and Satellite Systems. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69069-4_15.

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Gandhi, G. Parimala, Nagaraj Ramrao, and Manoj Kumar Singh. "Robust Flare Phase Auto Landing of Aircrafts, Based on Modified ASBO." In Advances in Intelligent Systems and Computing. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3156-4_25.

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Feng, Wei, and Xiaofeng Zhang. "Research on Trajectory Optimization Method of Rocket Vertical Recovery Landing Phase." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-1099-7_42.

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Rawea, Adel, and Shabana Urooj. "Design of Fuzzy Logic Controller to Drive Autopilot Altitude in Landing Phase." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13731-5_13.

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Li, Bao, Kejin Cao, Jiangning Xu, and Yinbing Zhu. "Application of Carrier Phase Differential Relative Navigation for Shipboard Landing of Aircraft." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-37398-5_18.

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Zhou, Chi, Yinghui Li, Wuji Zheng, Pengwei Wu, and Zehong Dong. "Safety Envelope Determination for Impaired Aircraft During Landing Phase Based on Reachability Analysis." In Lecture Notes in Electrical Engineering. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3305-7_191.

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Conference papers on the topic "Landing phase"

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Roy, Gilles, Xiaoying Cao, and Simon Roy. "Helicopter Flight Test of the Obscurant Penetrating Autosynchronous Lidar (OPAL) in Degraded Visual Environments: Part II - See-through Capability Assessment." In Vertical Flight Society 70th Annual Forum & Technology Display. The Vertical Flight Society, 2014. http://dx.doi.org/10.4050/f-0070-2014-9597.

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In support to the Directorate of Technical Airworthiness and Engineering Support (DTAES-6) of Canada's Department of National Defence (DND), DRDC Valcartier is currently evaluating the Obscurant Penetrating Autosynchronous Lidar (OPAL) developed by Neptec Technologies Corp. This sensor is targeted at supporting rotary-wing aircraft operating in degraded visual environments (DVE) during critical flight phases (i.e. take-off and landing). OPAL consists of a scanning pulsed lidar that generates 3D images of obstacles on the landing zone that are engulfed in an obscurant cloud. The sensor performa

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Grocholsky, Benjamin, Patrick DeFranco, Hugh Cover, Ayman Singh, and Sanjiv Singh. "Robust Autonomous Ship Deck Landing for Rotorcraft." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11576.

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Landing rotorcraft on a ship deck is a difficult and dangerous task. The US Navy is interested in expanding landing capabilities in degraded visual environments, with impaired or no GPS signal, and in autonomous operations, while at the same time reducing the cost of guidance infrastructure on the ship deck. This paper describes how a suite of multi-modal sensors can provide relative pose estimate from an aircraft to a ship deck in a wide range of conditions. The sensor suite enables robust performance while requiring minimal deck side infrastructure. We describe a three-phase trajectory plann

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Voskuijl, Mark, Damy Zilver, Michel van Rooij, and Richard Bakker. "Autonomous Ship Deck Landing Strategies for Unmanned Rotorcraft Operating in Harsh Weather Conditions." In Vertical Flight Society 81st Annual Forum and Technology Display. The Vertical Flight Society, 2025. https://doi.org/10.4050/f-0081-2025-263.

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Heavy wind and high sea states pose challenges to operating unmanned rotorcraft on-board a naval ship, in particular the recovery phase. A novel autonomous landing strategy for unmanned rotorcraft is proposed and investigated. The new landing strategy makes use of a prediction of the future deck motion based on a sensor on the ship deck. The study is based on a nonlinear simulation environment which includes the dynamics of a 100 kg unmanned helicopter and the dynamics of an ocean-going patrol vessel of the Royal Netherlands Navy. The performance of the autonomous landing strategy is evaluated

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Ngo, Tri, and Cornel Sultan. "Towards Automation of Helicopter Landings on Ship Decks Using Integer Programming and Model Predictive Control." In Vertical Flight Society 80th Annual Forum & Technology Display. The Vertical Flight Society, 2024. http://dx.doi.org/10.4050/f-0074-2018-12783.

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A novel method for the automated control of helicopters in landing maneuvers on ship decks is proposed, which combines integer programming and model predictive control (MPC). The helicopter is first brought sufficiently close to the landing deck using a standard MPC. In the final phase of the mission, termed the rendezvous phase, implementation of the novel control design method allows the MPC to rapidly adapt to the landing deck state via a variable prediction horizon. The control design problem includes an integer variable vector which is used to frequently estimate an appropriate prediction

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Amzajerdian, Farzin, Glenn D. Hines, Aram Gragossian, et al. "Demonstration of a Coherent Lidar Onboard the First Commercial Lunar Lander." In Applications of Lasers for Sensing and Free Space Communications. Optica Publishing Group, 2024. https://doi.org/10.1364/lsc.2024.lsw4c.2.

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A coherent Doppler lidar has been developed for providing vehicle altitude and vector velocity during descent phase of landing on planetary bodies. Performance of this sensor onboard Odysseus lunar lander will be discussed.

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Rose, Joseph L., Luis E. Soley, Thom Hay, and Vinod S. Agarwala. "Ultrasonic Guided Waves for Hidden Corrosion Detection in Naval Aircraft." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00267.

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Abstract Ultrasonic guided waves are used for the detection of hidden corrosion in such aircraft components as helicopter blades, landing gears, multi-layer components, tear strap and lap splice joints, helicopter transmission beams, and skin to core debonding in honeycomb structures. A new technique of phase velocity and frequency tuning is introduced for optimizing the defect detection process.

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Rogers, Jonathan, Michael Jump, Laura Strickland, Caroline Repola, Neil Cameron, and Thomas Fell. "Handling Qualities Assessment of a Pilot Cueing System for Autorotation Maneuvers." In Vertical Flight Society 73rd Annual Forum & Technology Display. The Vertical Flight Society, 2017. http://dx.doi.org/10.4050/f-0073-2017-12072.

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This paper details the design and limited flight testing of a preliminary system for visual pilot cueing during autorotation maneuvers. The cueing system is based on a fully-autonomous, multi-phase autorotation control law that has been shown to successfully achieve autonomous autorotation landing in unmanned helicopters. To transition this control law to manned systems, it is employed within a cockpit display to drive visual markers which indicate desired collective pitch and longitudinal cyclic positions throughout the entire maneuver, from autorotation entry to touchdown. A series of simula

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Govindarajan, Bharath, and J. Leishman. "Predictions of Rotor and Rotor/Airframe Configurational Effects on Brownout Dust Clouds." In Vertical Flight Society 70th Annual Forum & Technology Display. The Vertical Flight Society, 2014. http://dx.doi.org/10.4050/f-0070-2014-9599.

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Brownout dust cloud simulations were conducted for rotorcraft undergoing representative landing maneuvers, primarily to examine the effects of different rotor placement and rotor/airframe configurations. A time-dependent free-vortex wake for the rotors and surface singularity method for the airframe was employed to represent the carrier phase of the flow. A rigorous coupling strategy for the free-vortex method was developed to include the effects of rotors operating at different rotational speeds, such as a tail rotor. For the dispersed phase of the flow, particle tracking was used to model th

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Serge, Germanetti. "Safety Enhancement thanks to Real Time Performance Indication." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11338.

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In the frame of avionics development, more and more effort is engaged by Airbus Helicopter to improve Fleet Safety. Part of the risks to be covered is the lack of pilot's awareness regarding the helicopter real time performance (Performance Situational Awareness). Flight manual performance charts, are used routinely during the mission preparation, require a high pilot workload to process in real-time, and therefore are often substituted with simple approximations. Recently, Personal Devices such as tablets have emerged allowing better access to these performances Despite the tablet providing a

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Schaeffer, Joseph, David Belt, Kip Campbell, and Alessandro Colombo. "Development, Testing and Validation of Transport Category Procedures for the AW609 Tiltrotor." In Vertical Flight Society 71st Annual Forum & Technology Display. The Vertical Flight Society, 2015. http://dx.doi.org/10.4050/f-0071-2015-10171.

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Transport Category Certification requires the ability to safely land or continue flight after an engine failure during all phases of flight. The maximum transport category gross weight is a key parameter that can strongly influence the success of an aircraft. Due to its unique configuration, the tiltrotor offers unique challenges and abilities for surviving an engine failure during its critical mission phase. Challenges include energy management and thrust maintenance for a low inertia, high disk-loading rotor. Unique capabilities include rapid acceleration due to tilting of the thrust vector

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Reports on the topic "Landing phase"

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LaHatte, W., Ahmad Tavakoly, Sara Lytle, and James Lewis. Mississippi River climate model–based hydrograph projections at the Tarbert Landing location. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47084.

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To better understand and prepare for the possible effects associated with potential climate changes on the lower Mississippi River, the State of Louisiana Coastal Protection and Restoration Authority sought information on the historical, current, and projected future hydrodynamics of the Mississippi River. To this end, flow duration curves (FDC) for the Tarbert Landing location were generated, based on climate models derived from two of the four scenarios of the Coupled Model Intercomparison Project, Phase 5 (CMIP5), multimodel ensemble representative concentration pathways (RCPs). The global

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Rutherford, Benjamin, Andrew Collins, Zachary Tyler, Patrick Border, Stanley Boc, and Timothy Rushing. Full-scale trafficability testing of prototype submersible matting systems. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47701.

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This report describes the full-scale evaluation of prototype submersible matting systems (SUBMAT) at a test site at the US Army Engineer Research and Development Center’s Vicksburg, Mississippi, site. The SUBMAT prototypes were designed to bridge the gap between high and low tide at a beach interface to enable 24-hour operation at an expeditionary watercraft landing site. This phase of the SUBMAT prototype development was intended to determine prototype system durability by applying military vehicle loads representing a combat brigade insertion across a littoral zone. The two mat systems evalu

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Qian, Yuping, Yangjun Zhang, and WEILIN ZHUGE. Key Technology Challenges of Electric Ducted Fan Propulsion Systems for eVTOL. SAE International, 2023. http://dx.doi.org/10.4271/epr2023027.

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<div class="section abstract"><div class="htmlview paragraph">Electrical vertical takeoff and landing (eVTOL) vehicles for urban air mobility (UAM) are garnering increased attention from both the automotive and aerospace industries, with use cases ranging from individual transportation, public service, cargo delivery, and more. Distributed electric propulsion systems are their main technical feature; they determine vehicle size and propulsion efficiency and provide distributed thrust to achieve attitude control. Considering the intended role of eVTOL vehicles, ducted-fan systems ar

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Buesseler, Buessele, Daniele Bianchi, Fei Chai, et al. Paths forward for exploring ocean iron fertilization. Woods Hole Oceanographic Institution, 2023. http://dx.doi.org/10.1575/1912/67120.

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We need a new way of talking about global warming. UN Secretary General António Guterres underscored this when he said the “era of global boiling” has arrived. Although we have made remarkable progress on a very complex problem over the past thirty years, we have a long way to go before we can keep the global temperature increase to below 2°C relative to the pre-industrial times. Climate models suggest that this next decade is critical if we are to avert the worst consequences of climate change. The world must continue to reduce greenhouse gas emissions, and find ways to adapt and build resili

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