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Accueil »  Tirages Photos » Aviation - Avions NASA-Prototypes » S04306
 
Réf S04306 : LRV-2 vehicle parked on ramp
    



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DIMENSIONS TIRAGE Haute Définition TRANSPARENT*
40 x 60 cm23.00 € 20.70 €
125.00 €
50 x 75 cm29.90 € 26.91 €
140.00 €
60 x 90 cm45.00 € 40.50 €
170.00 €
80 x 120 cm75.00 €
220.00 €
100 x 150 cm109.00 €
290.00 €

*Le transparent est un support translucide
que l'on applique devant un néon
Thème : Aviation - Avions NASA-Prototypes

Description : (La description de cette image n'existe qu'en anglais)

The LRV-2 (Low Reynolds Vehicle No. 2), seen here on the ramp at NASA's Dryden Flight Research Center, Edwards, California, was a remotely piloted research vehicle (RPRV) developed to conduct aerodynamic and auto-pilot systems experiments on ultra-light aircraft. The aircraft made its maiden voyage October 20, 1982. The LRV-2 had a 32 ft. wingspan with a 1.5 lb per square foot wing loading. The aluminum tube structure was covered with a lightweight dacron fabric and was powered by a ten horsepower two-stroke engine.The LRV-2 was equipped with a lightweight RPRV system comprised of a radio-control uplink, a nose-mounted television system, a radar transponder for precise tracking and a telemetry system for research data.Wing tip extensions, with experimental wing airfoil sections, were installed and instrumented for surface pressures and wake drag measurements. The very low flying speed of the LRV-2 allowed Reynolds numbers matching those of current and future high altitude lightweight RPRVs. The Reynolds number is a measurement roughly equivalent to ''viscosity'' as measured in liquids.The LRV-2 was flown by one of two ''radio-control'' pilots. The vehicle could be flown by a ''visual pilot'' sitting in the back of a ''chase'' pickup truck, or by an ''IFR'' pilot watching a television screen and a radar plot board. Landings and take-offs were conducted by either pilot, however, research maneuvers were performed by the IFR pilot having attitude information from the forward looking TV and other data from the telemetry system down-linked from the aircraft.The LRV-2 was flown to 20,000 ft altitude to provide Reynolds number variations and altitude effects on the onboard experiments.


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