User:JKBodylski/sandbox2
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PRANDTL- D
[edit]PRANDTL-D | |
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PRANDTL-D 3c on bungee during launch | |
Role | Research UAV |
National origin | United States |
Manufacturer | NASA |
Designer | Albion Bowers |
First flight | 2009 |
Produced | 2010-2018 |
Preliminary Research AerodyNamic Design To Lower Drag (PRANDTL-D) is a series of subscale research aircraft designed by Al Bowers at NASA Armstrong Flight Research Center to test applications of a Bell Shaped Lift Distribution (BSLD) based on Ludwig Prandtl's 1933 paper.
Specifications (PRANDTL-D 3c)
[edit]General characteristics
- Wingspan: 25 ft 0 in ([convert: invalid number])
- Empty weight: [convert: invalid number] (12.7 kg)
Performance
- Cruise speed: 21 mph (34 km/h, 18 kn)
Specifications (PRANDTL-D 2)
[edit]![PRANDTL-D 2 in flight with research Alpha Beta vanes](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3e/PRANDTL-D_2_in_flight_with_research_Alpha_Beta_vanes.jpg/220px-PRANDTL-D_2_in_flight_with_research_Alpha_Beta_vanes.jpg)
General characteristics
- Wingspan: 12 ft 4 in ([convert: invalid number])
- Wing area: 10.125 sq ft (0.9406 m2)
- Empty weight: [convert: invalid number] (12.7 kg)
Performance
- Cruise speed: 21 mph (34 km/h, 18 kn)