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Relevant bibliographies by topics / Control surface deflections

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Journal articles

Academic literature on the topic 'Control surface deflections'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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Journal articles on the topic "Control surface deflections"

1

Campos, L. M. B. C., and J. M. G. Marques. "On the maximisation of control power in low-speed flight." Aeronautical Journal 123, no. 1266 (2019): 1099–121. http://dx.doi.org/10.1017/aer.2019.44.

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ABSTRACTThe maximisation of control power is considered for an aircraft with multiple control surfaces, with the force and moment coefficients specified by polynomials of the control surface deflections of degree two. The optimal deflections, which maximise and minimise any force or moment coefficient, are determined subject to constraints on the range of deflection of each control surface. The results are applied to a flying wing configuration to determine: (i/ii) the pitch trim, at the lowest drag for the fastest climb, and at the highest drag for the steepest descent; (iii) the maximum and

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2

Barth, Christina, and Carl Knospe. "Actuation of Flexible Membranes via Capillary Force: Single-Active-Surface Experiments." Micromachines 9, no. 11 (2018): 545. http://dx.doi.org/10.3390/mi9110545.

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Conventional approaches to microscale actuation, such as electrostatic, have difficulty in achieving large motion at moderate voltages. Recently, actuators relying on the active control of capillary pressure have been demonstrated, with the pressure change caused by electrowetting on a pair of opposing surfaces. In this work, experimental results are presented from five prototype devices in which only a single active surface is used. The results demonstrate that pressure changes induced in a liquid bridge in this manner can produce large deflections (15 μm) of a flexible membrane. Voltages emp

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3

Zihan, Zia U. A., Mostafa A. Elseifi, Patrick Icenogle, Kevin Gaspard, and Zhongjie Zhang. "Mechanistic-Based Approach to Utilize Traffic Speed Deflectometer Measurements in Backcalculation Analysis." Transportation Research Record: Journal of the Transportation Research Board 2674, no. 5 (2020): 208–22. http://dx.doi.org/10.1177/0361198120914296.

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Backcalculation analysis of pavement layer moduli is typically conducted based on falling weight deflectometer (FWD) deflection measurements; however, the stationary nature of the FWD requires lane closure and traffic control. In recent years, traffic speed deflection devices such as the traffic speed deflectometer (TSD), which can continuously measure pavement surface deflections at traffic speed, have been introduced. In this study, a mechanistic-based approach was developed to convert TSD deflection measurements into the equivalent FWD deflections. The proposed approach uses 3D-Move softwar

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4

Burkhalter, John E., Donald J. Spring, and M. Kent Key. "Downwash for joined-wing airframe with control surface deflections." Journal of Aircraft 29, no. 3 (1992): 458–64. http://dx.doi.org/10.2514/3.46183.

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5

Moyer, Seth A. "PAN AIR analysis of simply connected control surface deflections." Journal of Aircraft 30, no. 1 (1993): 154–56. http://dx.doi.org/10.2514/3.46329.

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6

Żugaj, Marcin. "Reconfiguration of Unmanned Aircraft Control System." Transactions on Aerospace Research 2017, no. 2 (2017): 80–96. http://dx.doi.org/10.2478/tar-2017-0017.

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Abstract Reliability of unmanned aircraft is a decisive factor for conducting air tasks in controlled airspace. One of the means used to improve unmanned aircraft reliability is reconfiguration of the control system, which will allow to maintain control over the aircraft despite occurring failures. The control system is reconfigured by using operational control surfaces, to compensate for failure consequences and to control the damaged aircraft. Development of effective reconfiguration algorithms involves utilization of a non-linear model of unmanned aircraft dynamics, in which deflection of e

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7

Yang, M. Y., and J. G. Choi. "A Tool Deflection Compensation System for End Milling Accuracy Improvement." Journal of Manufacturing Science and Engineering 120, no. 2 (1998): 222–29. http://dx.doi.org/10.1115/1.2830117.

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In an effort to reduce machining surface errors due to tool deflection in the end milling process, methods regulating cutting forces have been implemented with online feed rate controls. Such schemes are able to improve the parts dimensional accuracy, but unfortunately they can exhibit undesirable aspects in which the alleviation of the cutting conditions deteriorates the productivity. In addition the frequent changes of the feed rate would spoil the surface quality. As a new approach to achieve the precision machining efficiently, this paper introduces a tool deflection compensation system. T

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8

Nazeer, Nakash, Xuerui Wang, and Roger M. Groves. "Sensing, Actuation, and Control of the SmartX Prototype Morphing Wing in the Wind Tunnel." Actuators 10, no. 6 (2021): 107. http://dx.doi.org/10.3390/act10060107.

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This paper presents a study on trailing edge deflection estimation for the SmartX camber morphing wing demonstrator. This demonstrator integrates the technologies of smart sensing, smart actuation and smart controls using a six module distributed morphing concept. The morphing sequence is brought about by two actuators present at both ends of each of the morphing modules. The deflection estimation is carried out by interrogating optical fibers that are bonded on to the wing’s inner surface. A novel application is demonstrated using this method that utilizes the least amount of sensors for load

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9

Cacciola, Stefano, Carlo Riboldi, and Matteo Arnoldi. "Three-Surface Model with Redundant Longitudinal Control: Modeling, Trim Optimization and Control in a Preliminary Design Perspective." Aerospace 8, no. 5 (2021): 139. http://dx.doi.org/10.3390/aerospace8050139.

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Notwithstanding the interest in the three-surface concept shown by aircraft designers, this configuration was not thoroughly investigated in conjunction with the adoption of two-elevator surfaces, on both canard and tail. In fact, the inclusion of an additional elevator produces a redundant longitudinal control which can be specifically exploited to target trim optimization. The same redundancy can be also employed to improve the flying qualities of the three-surface aircraft. In this paper, after introducing a simple flight mechanics model, ideal for preliminary design and analyses, the advan

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10

Gatto, A., P. Bourdin, and M. I. Friswell. "Experimental Investigation into the Control and Load Alleviation Capabilities of Articulated Winglets." International Journal of Aerospace Engineering 2012 (2012): 1–15. http://dx.doi.org/10.1155/2012/789501.

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An experimental investigation into the real-time flow and control characteristics of a flying wing with articulated winglets is described in this paper. The philosophy of the concept centres around the use of active, in-flight adjustment of each wing's winglet dihedral angle, both as a primary means of aircraft roll control (single winglet actuation) and though smaller equal and simultaneous winglet deflections, tailor and alleviate main wing load. Results presented in this paper do provide good evidence of the concept's ability to adequately perform both tasks, although for the current chosen

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