Simulation of Landing Gear Dynamics and Brake-Gear Interaction

Khapane, Prashant

doi:10.24355/dbbs.084-200807160200-0

2007

DOI: 10.24355/dbbs.084-200807160200-0

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Simulation of Landing Gear Dynamics and Brake-Gear Interaction

Prashant Khapane¹

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Identification of directional runway dynamics for an experimental UAV

Drago¹,

Maciel²,

Hemerly³

et al. 2013

2013 International Conference on Unmanned Aircraft Systems (ICUAS)

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The knowledge of the ground directional behavior of an UAV during the ground phase is crucial in order to develop an automatic take-off and landing control system. During such development program, it is very common to use prototypes. These prototypes have specifics components and mostly of the performance characteristics of these components are unknown. This paper deals with the identification of the ground dynamics of a nose wheel tricycle landing gear by using real UAV runway tests data. A simplified mathematical model is proposed for identification by using Output Error Method with minimization of the cost function by LevenbergMarquartd. The identification results enable development of ground steering laws.

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Identification of directional runway dynamics for an experimental UAV

Drago¹,

Maciel²,

Hemerly³

et al. 2013

2013 International Conference on Unmanned Aircraft Systems (ICUAS)

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52nd Aerospace Sciences Meeting

Wu¹,

Voskuijl²,

Tooren³

2014

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A novel take-off and landing system using ground based power is proposed in the EU-FP7 project GABRIEL. The proposed system has the potential benefit to reduce aircraft weight, emissions and noise. A preliminary investigation of the feasibility of the structural design of the connection mechanism between aircraft and ground system has been performed by simulating the landing procedure on a moving ground system. One of the key challenges is the landing on a moving ground system under high crosswind conditions. The main focus in the current research is the calculation of the impact loads on both aircraft and ground system for a wide range of landing conditions (sink rate, velocity differences between aircraft and ground system, etc.). For comparison, conventional landing procedures with a traditional landing gear have also been simulated. Two different aerodynamic models (empirical and vortex lattice method) have been used and compared in the simulations for verification and validation purposes. The results of this research study are a set of load cases and operational constraints that can be used for the structural design of the ground system and modifications to the aircraft. Detailed values are presented in the paper. Key word

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Simulation of Landing Gear Dynamics and Brake-Gear Interaction

Cited by 2 publications

References 0 publications

Identification of directional runway dynamics for an experimental UAV

Identification of directional runway dynamics for an experimental UAV

52nd Aerospace Sciences Meeting

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