Vertical Drop Testing and Analysis of the WASP Helicopter Skid Gear

Fuchs, Yvonne T.; Jackson, Karen E.

doi:10.4050/jahs.56.012005

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…More focused activities have investigated the crashworthiness of single helicopter components or sections, such as in [17,[20][21][22]. Landing gears-mainly skid landing gears-also have been included in the crashworthiness research programs, aiming at providing and optimizing effective structures for safe landings [23][24][25][26][27].…”

Section: State Of the Artmentioning

confidence: 99%

“…The investigation is performed in various attitudes and soil conditions, and the sensitivity to soil friction factor is investigated. Another work concerning a skid landing gear was published in 2007 by the NASA, describing an experimental program to assess the impact performance of a skid gear for the use on the Wasp kit-built helicopter [23]. In recent years the application of automated robotic landing gears has seen the light.…”

Section: State Of the Artmentioning

confidence: 99%

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On the Evaluation of a Coupled Sequential Approach for Rotorcraft Landing Simulation

Cristiani

Colombo

Zieliński

et al. 2020

Sensors

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Maximum loads acting on aircraft structures generally arise when the aircraft is undergoing some form of acceleration, such as during landing. Landing, especially when considering rotorcrafts, is thus crucial in determining the operational load spectrum, and accurate predictions on the actual health/load level of the rotorcraft structure cannot be achieved unless a database comprising the structural response in various landing conditions is available. An effective means to create a structural response database relies on the modeling and simulation of the items and phenomena of concern. The structural response to rotorcraft landing is an underrated topic in the open scientific literature, and tools for the landing event simulation are lacking. In the present work, a coupled sequential simulation strategy is proposed and experimentally verified. This approach divides the complex landing problem into two separate domains, namely a dynamic domain, which is ruled by a multibody model, and a structural domain, which relies on a finite element model (FEM). The dynamic analysis is performed first, calculating a set of intermediate parameters that are provided as input to the subsequent structural analysis. Two approaches are compared, using displacements and forces at specific airframe locations, respectively, as the link between the dynamic and structural domains.

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