Academic literature on the topic 'Retractable landing gear'

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Journal articles on the topic "Retractable landing gear"

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De Stefano, Giuliano, Nunzio Natale, Giovanni Paolo Reina, and Antonio Piccolo. "Computational Evaluation of Aerodynamic Loading on Retractable Landing-Gears." Aerospace 7, no. 6 (2020): 68. http://dx.doi.org/10.3390/aerospace7060068.

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Computational fluid dynamics is employed to evaluate the mean aerodynamic loading on the retractable landing-gears of a regional transport commercial aircraft. The mean turbulent flow around simplified landing-gear systems including doors is simulated by using the Reynolds-averaged Navier–Stokes approach, where the governing equations are solved with a finite volume-based numerical method. Using a dynamic meshing method, the computational grid is automatically and continuously adapted to the time-changing geometry, while following the extension/retraction of the landing-gear systems. The tempo
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Levinson, Mark, and Walter G. Vincenti. "Comment and Response on "The Retractable Airplane Landing Gear"." Technology and Culture 36, no. 2 (1995): 451. http://dx.doi.org/10.2307/3106408.

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Liang, Yong, Kun Zhao, Yingchun Chen, Longjun Zhang, and Gareth J. Bennett. "An Experimental Characterization on the Acoustic Performance of Forward/Rearward Retraction of a Nose Landing Gear." International Journal of Aerospace Engineering 2019 (July 4, 2019): 1–11. http://dx.doi.org/10.1155/2019/4135094.

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The modern undercarriage system of a large aircraft normally requires the landing gear to be retractable. The nose landing gear, installed in the front of the fuselage, is retracted either forward or rearward. In the forward/rearward retraction system, the landing gear is normally installed to the trailing/leading side of the bay. When the incoming flow passes the landing gear as well as the bay, the installation that corresponds to the forward/rearward retraction system has a significant impact on the coupling flow and the associated noise of the landing gear and the bay. In this paper, acous
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Constant, Edward W. "Comment on "The Retractable Airplane Landing Gear and the Northrop 'Anomaly'"." Technology and Culture 35, no. 2 (1994): 447. http://dx.doi.org/10.2307/3106335.

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Xin, Huang Bing. "Design and analysis of retractable structure of new quadrotor landing gear." Journal of Physics: Conference Series 1750 (January 2021): 012022. http://dx.doi.org/10.1088/1742-6596/1750/1/012022.

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Vincenti, Walter G. "Variation—selection in the innovation of the retractable airplane landing gear: the Northrop ‘anomaly’." Research Policy 23, no. 5 (1994): 575–82. http://dx.doi.org/10.1016/0048-7333(94)01007-2.

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Hou, Yu, Ming Zhang, and Hong Nie. "Wear analysis of finger locks with different design parameters for landing gear." Science Progress 103, no. 3 (2020): 003685042095012. http://dx.doi.org/10.1177/0036850420950122.

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The finger lock in the retractable actuator of the landing gear will wear during repeated unlocking and locking. Therefore, the effects of six parameters including the material of the finger lock, the length of the finger lock, the diameter of the finger lock, the number of petals, and the angle of the fingertip on the unlocking force after 500 unlocking cycles are researched. Archard wear theory was performed to obtain the unlocking force after wear and the influence of six key parameters on the unlocking force in this paper. Then, wear experiment was designed and the effectiveness of model a
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Vincenti, Walter G. "The Retractable Airplane Landing Gear and the Northrop "Anomaly": Variation-Selection and the Shaping of Technology." Technology and Culture 35, no. 1 (1994): 1. http://dx.doi.org/10.2307/3106747.

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Zhang, Ming, Rongmin Jiang, and Hong Nie. "A numerical study on the friction and wear predictions of finger lock chuck in landing gear." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 231, no. 1 (2016): 109–23. http://dx.doi.org/10.1177/0954410016650710.

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Locking mechanism is an important part of landing gear, which is required to lock retractable landing gear during taking off and landing processes of aircraft. This paper introduces an effective numerical simulation forecasting method to investigate the friction and wear of unworn finger lock chuck, where an associated experiment was conducted to verify the correctness of the method. The dynamic explicit procedure was adopted in the simulation process with Abaqus/Explicit solver, the user subroutine VFRIC integrated in the commercial package ABAQUS was coded to study the rate-dependent dynamic
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Shrestha, Elena, Brian Davis, Vikram Hrishikeshavan, and Inderjit Chopra. "All-Terrain Cyclocopter Capable of Aerial, Terrestrial, and Aquatic Modes." Journal of the American Helicopter Society 66, no. 1 (2021): 1–10. http://dx.doi.org/10.4050/jahs.66.012006.

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This paper describes the design and experimental validation of an all-terrain cyclocopter micro air vehicle capable of power-efficient aerial, terrestrial, and aquatic locomotion with seamless transition between the modes. The vehicle has a mass of 1010 g and solely relies on its four cycloidal rotors (cyclorotors) to achieve all modes of locomotion. The cyclorotor rotational speeds and thrust vectors are individually modulated to sustain stable hover in aerial mode. A similar control strategy using aerodynamic forces generated by cyclorotors is also implemented for aquatic locomotion. The whe
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Dissertations / Theses on the topic "Retractable landing gear"

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COSTESEQUE, Caroline. "Study of the Mechanical Retractable Landing-Gear." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-15494.

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This thesis was conducted in the design office of “Blackwing SwedenAB”, a Swedish aircraft manufacturer. The mission is to study air loadson a mechanical retractable landing gear. This study is realised to verifyif the structure is resistant enough for a landing and find the retractionspeed of the system. To accomplish those goals, the thesis was realisedon site with a state of-the-art, research on technical solutions, handcalculations, ANSYS analysis and tests with validation by a companyexpert. Testing is part of the certification and results show the structureis strong enough to resist air
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Chren, Tibor. "Návrh podvozku pro letoun Rapid 600." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229317.

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This diploma thesis deals with design of retractable landing gear for Rapid 600 aircraft. The main purpose of this thesis is to analyze different retraction options for front and main landing gear and resulting selection of suitable variants. The thesis is consequently concerned with design of selected options including proposal of automatic landing gear control system and specifying the features and characteristics of this system. In the thesis there is also included the analysis of critical flight conditions which could be detected by this system.
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Skřivánek, Jan. "Návrh elektro-hydraulického ovládání hlavního podvozku a brzd pro malý cvičný letoun." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-377525.

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This thesis studies the design of an electro-hydraulic landing gear and brakes control system of a trainer aeroplane. In the first part there is a basic draft of the landing gear kinematics and its loads during gear retraction, flight and landing. Braking conditions are also analysed. The thesis then focuses on the design of hydraulic circuits and their control. Simulations for studying the dynamic characteristics of the braking proportional valve and the course of plane braking were created in Simulink. There is also a brief section about reliability of the proposed system.
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Bartoněk, Jaroslav. "Návrh zatahovacího podvozku pro letoun NG4." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229467.

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This diploma thesis describes the design of retractable landing gear for the NG-4 ultralight aircraft. Its main part consists of general principle of gear retraction, kinematics analysis, load calculation and structural analysis, material selection and means of controlling by pilot. The thesis contents marginally the typology of aircraft landing gears and their evolution.
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Štěpánek, Jan. "Návrh konstrukce křídla a podvozku kluzáku TST 14 MC." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228596.

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Modification of TST-14 MC glider, calculation of flight envelope, distribution of lift on the wing, calculation of loading cases of the wing, strength check of choosen construction nodes, design of the landing gear retraction mechanism, setting up loading of landing gear according to ULKM, strength check of landing gear
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Vodička, Petr. "Návrh elektro-hydraulické soustavy pro ovládání příďového podvozku malého dopravního letounu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318402.

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The diploma thesis is focused on design of electrohydraulic system for nose gear control on small civil airliners. First part consists of brief review of small civil airliners, nose gears and CS 23 restrictions relevant for the design. In practical part a typical small civil airliner is defined and kinematic of landing gear mechanisms is designed. Then the electrohydraulic system itself is designed and parameters of some components are suggested. The wheel steering mechanism is simulated and, in conclusion, the whole system is evaluated.
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Book chapters on the topic "Retractable landing gear"

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De Stefano, Giuliano, Nunzio Natale, Antonio Piccolo, and Giovanni Paolo Reina. "CFD Prediction of Retractable Landing Gear Aerodynamics." In Computational Science and Its Applications – ICCSA 2020. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-58799-4_5.

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Conference papers on the topic "Retractable landing gear"

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Haibin Yang and Leilei Chen. "Seal Failure Mode and Effects Analysis for Retractable Actuator of Landing Gear." In CSAA/IET International Conference on Aircraft Utility Systems (AUS 2018). Institution of Engineering and Technology, 2018. http://dx.doi.org/10.1049/cp.2018.0240.

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