Results 121 to 130 of about 64,260 (282)
Rotorcraft research testing in the National Full-Scale Aerodynamics Complex at NASA Ames Research Center [PDF]
The unique capabilities of the National Full-Scale Aerodynamics Complex (NFAC) for testing rotorcraft systems are described. The test facilities include the 40- by 80-Foot Wind Tunnel, the 80- by 120-Foot Wind Tunnel, and the Outdoor Aerodynamic Research
Johnson, W., Smith, C. A., Warmbrodt, W.
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Manoeuvrability assessment of a hybrid compound helicopter configuration [PDF]
, 2014 The compound helicopter design could potentially satisfy the new emerging requirements placed on the next generation of rotorcraft. The main benefit of the compound helicopter is its ability to reach speeds that significantly surpass the conventional ...
Ferguson, Kevin, Thomson, Douglas
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Journal of Diabetes Investigation, EarlyView.This illustration depicts the effects of thermal stress on human keratinocytes maintained in both normal and high‐glucose conditions. Under normal glucose conditions, heat exposure enhances arginine metabolism and increases nitric oxide (NO) production, which promotes alterations in mitochondrial morphology and elevates heat shock protein 70 (Hsp70 ...
Syeda Tayyiba Rahat +4 more
wiley +1 more source
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019 The radar image construction algorithms for propellers of aerial vehicles belonging to the classes «helicopter» and «propeller-driven aircraft» were proposed in [1].
S. R. Heister, T. T. Nguyen
doaj
An hydraulic windmill is described. It pumps pressurized oil from rotor shaft level to the ground where a motor generator produces electricity. Alternatively, the useful output may be heat. Rotor speed is governed by a flow valve.
Browing, J. A.
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A flight dynamics investigation of compound helicopter configurations [PDF]
, 2013 Compounding has often been proposed as a method to increase the maximum speed of the helicopter. There are two common types of compounding known as wing and thrust compounding.
Ferguson, K., Thomson, D.
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Journal of Fish Diseases, EarlyView.ABSTRACT The objective of this study was to evaluate welfare and health effects following single and repeated non‐lethal blood sampling from the caudal vasculature of Atlantic salmon. Two experiments were conducted at three different temperatures: a 6‐week freshwater experiment with fish weighing 50–100 g, undergoing up to four blood withdrawals, and a
Harriet Romstad +9 more
wiley +1 more source
Damage and Failure of Aeroengine Blades Under Small UAV Impacts
International Journal of Aerospace EngineeringUnmanned aerial vehicles (UAVs) may collide with vulnerable parts of other aircrafts, such as engine blades, causing accidents. The research on small UAV impact is limited. Besides, UAV impact with propeller and rotor blades is poorly understood. In this
Zhibin Wu +3 more
doaj +1 more source
An investigation of rotor harmonic noise by the use of small scale wind tunnel models [PDF]
Noise measurements of small scale helicopter rotor models were compared with noise measurements of full scale helicopters to determine what information about the full scale helicopters could be derived from noise measurements of small scale helicopter ...
Schaffer, E. G., Sternfeld, H., Jr.
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CHANCE: A FRENCH-GERMAN HELICOPTER CFD-PROJECT [PDF]
, 2006 The paper gives an overview of the CHANCE research project (partly supported by the French DPAC and DGA and the German BMWA) which was started in 1998 between the German and French Aerospace Research Centres DLR and ONERA, the University of Stuttgart and
Altmikus, Andree +4 more
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