Experimental and Numerical Investigation of Near-field Rotor Aeroacoustics [PDF]
, 2018 This work presents comparisons between experimental and numerical estimates of near-field rotor aeroacoustics in hover. The experiments took place at the Kazan National Research Technical University named after A. N. Tupolev (Kazan Aviation Institute).
Barakos, George N. +6 more
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Application of special-purpose digital computers to rotorcraft real-time simulation [PDF]
The use of an array processor as a computational element in rotorcraft real-time simulation is studied. A multilooping scheme was considered in which the rotor would loop over its calculations a number of time while the remainder of the model cycled once
Mackie, D. B., Michelson, S.
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Conceptual design study for an advanced cab and visual system, volume 2 [PDF]
The performance, design, construction and testing requirements are defined for developing an advanced cab and visual system. The rotorcraft system integration simulator is composed of the advanced cab and visual system and the rotorcraft system motion ...
Cyrus, M. L. +5 more
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Recent Efforts Enabling Martian Rotorcraft Missions [PDF]
The Mars Helicopter (MH), launching as a part of the Mars 2020 mission, will begin a new era of planetary exploration. Mars research has historically been conducted through landers, rovers, and satellites.
Johnson, Wayne R. +3 more
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Coverage Path Planning Methods Focusing on Energy Efficient and Cooperative Strategies for Unmanned Aerial Vehicles. [PDF]
Sensors (Basel), 2022 Fevgas G +3 more
europepmc +1 more source
A comparison of fatigue life prediction methodologies for rotorcraft [PDF]
Because of the current U.S. Army requirement that all new rotorcraft be designed to a 'six nines' reliability on fatigue life, this study was undertaken to assess the accuracy of the current safe life philosophy using the nominal stress Palmgrem-Miner ...
Everett, R. A., Jr.
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Calculation of rotor impedance for use in design analysis of helicopter airframe vibrations [PDF]
Excessive vibration is one of the most prevalent technical obstacles encountered in the development of new rotorcraft. The inability to predict these vibrations is primarily due to deficiencies in analysis and simulation tools.
Nygren, Kip P.
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Modular shape-changing tensegrity-blocks enable self-assembling robotic structures. [PDF]
Nat CommunZhao L +4 more
europepmc +1 more source
Test stand performance of a convertible engine for advanced V/STOL and rotorcraft propulsion [PDF]
A variable inlet guide vane (VIGV) convertible engine that could be used to power future high-speed V/STOL and rotorcraft was tested on an outdoor stand.
Mcardle, Jack G.
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Optimization of accelerated life test design process for gears and bearings using equivalent damage method. [PDF]
Sci RepKim JH +5 more
europepmc +1 more source