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The Boeing Model 853-21 Quiet Bird was a US Army reconnaissance plane study developed by Boeing in the early 1960s from their Model 831.[1] It was an early example of stealth technology, especially electromagnetic low-observability.[2]
 | This article relies largely or entirely on a single source. (September 2015) |
| Model 835-21 Quiet Bird | |
|---|---|
| Role | US Army observation study |
| Manufacturer | Boeing |
| Number built | 1/2 scale mockup produced |
Development of the Model 853-21 began in 1962 at Boeing Wichita, only a 1/2 scale prototype was produced which never flew, but tests showed that it had a very low radar cross-section (stealth aircraft).[1]
Data from Boeing[1]
General characteristics
- Crew: 1
- Length: 33 ft 0 in (10.06 m)
- Wingspan: 33 ft 7.8 in (10.26 m)
- Height: 7.7 ft (2.3 m)
- Wing area: 179.5 sq ft (16.67 m2)
- Airfoil: 65A415
- Empty weight: 6,000 lb (2,721 kg)
- Gross weight: 8,150 lb (3,696 kg)
- Powerplant: 1 × General Electric CF700 , 4,200 lbf (19 kN) thrust
Performance
- Stall speed: 80 kn (92 mph, 150 km/h)
- Range: 1,160 nmi (1,330 mi, 2,150 km)
- Service ceiling: 47,000 ft (14,000 m)
- Rate of climb: 3,050 ft/min (15.5 m/s)
- Wing loading: 45.4 lb/sq ft (221 kg/m2)
- Thrust/weight: 0.52
Related development
Aircraft of comparable role, configuration, and era
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