Hover test of a full-scale hingeless helicopter rotor: Aeroelastic stability, performance and loads data [PDF]
A hover test of a full-scale, hingeless rotor system was conducted in the NASA Ames 40- by 80-foot wind tunnel. The rotor was tested on the Ames rotor test apparatus.
Peterson, R. L., Warmbrodt, W.
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General Electric composite ring-disk flywheel: Recent and potential developments [PDF]
, 1984 Recent developments of the General Electric hybrid rotor design are described. The relation of the hybrid rotor design to flywheel designs that are especially suitable for spacecraft applications is discussed.
Coppa, A. P.
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Closure to “Discussions of ‘Energy Transfer Between a Fluid and a Rotor for Pump and Turbine Machinery’” (1942, Trans. ASME, 64, pp. 586–594) [PDF]
, 1942 Sanford A. Moss +2 more
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Natural turbulence electrical power generator [PDF]
, 1980 An energy conversion apparatus is disclosed in which a stator, fixed to a watertight housing, is coupled to a rotor by a helical spring which suspends the rotor from the housing. Natural turbulence of a fluid, such as water or air, causes acceleration of
Grana, D. C., Wilem, R. T.
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WIND-TUNNEL INVESTIGATION TO DETERMINE THE CRITICAL ADVANCE RATIO OF THE 8/31-SCALE MCDONNELL MODEL 82 CONVERTIPLANE ROTOR [PDF]
, 1953 HANS K. DOETSCH, LEON MARK
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Evaluation of Rotor Blade Models for Rotor Outwash [PDF]
, 2018 In this work Computational Fluid Dynamics is used as a tool for rotor outwash evaluation. The paper\ud concentrates on the validation of the method, presents different modelling approaches and concludes with\ud suggestions on the use of the method for detailed simulations of rotor outwash.
Rovere, F. +4 more
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Acoustic test of a model rotor and tail rotor: Results for the isolated rotors and combined configuration [PDF]
Acoustic data from a model scale main rotor and tail rotor experiment in the NASA Langley 14 by 22 Foot Subsonic Tunnel are presented for the main rotor and trail rotor in isolation and for the two rotors operating together. Results for the isolated main
Burley, C. L. +2 more
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Multistable Composite Laminate Grids as a Design Tool for Soft Reconfigurable Multirotors
Advanced Intelligent Systems, EarlyView.Flexible, lightweight, stable: the reconfigurable multirotor combines stable flight in multiple shapes with low‐energy reconfiguration. Utilizing optimized multistable composites, it achieves self‐locking in open and folded configurations, cutting width‐span by 48% and allowing for safe gap traversal.
Luca Girardi +4 more
wiley +1 more source
Advanced Intelligent Systems, EarlyView.This article answers the question “Where is the best place to apply compliance in a multirotor micro aerial vehicle to make it more collision‐resilient?” by analyzing the output data of more than 1200 drone collision tests for four main configurations of micro‐quadcopters each possessing a unique softness layout of physical frame.
Amirali Abazari +3 more
wiley +1 more source