Boeing Model 853-21 Quiet Bird
{{one source|date=September 2015}}
| {{Infobox aircraft begin
|name = Model 835-21 Quiet Bird |image = |caption = }}{{Infobox aircraft type |type = US Army observation study |manufacturer = Boeing |first flight = |introduced = |retired = |produced = |number built = 1/2 scale mockup produced |status = |unit cost = |primary user = |more users = |developed from = |variants with their own articles = }} |
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.{{Cite web |title=Boeing Images - Search Result for "Quiet Bird" |url=https://secure.boeingimages.com/Package/2JRSXLJBF7A9 |access-date=2023-06-21 |website=secure.boeingimages.com}} It was an early example of stealth technology, especially electromagnetic low-observability.Thomas Tamblyn; "[https://www.huffingtonpost.co.uk/2015/09/28/boeings-alien-looking-stealth-fighter-from-the-60s-looks-futuristic-even-today_n_8205994.html Boeing's 'Alien' Looking Stealth Fighter From The 60s Looks Futuristic Even Today]", Huffington Post, 2015. (retrieved 29 June 2023).
Design and development
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).
Specifications
{{Aircraft specs
|prime units? = kts
|crew=1
|length ft=33
|length m= 10.06
|span ft=33.65
|span m=10.26
|height ft=7.7
|wing area sqft=179.5
|wing area sqm=16.67
|airfoil=65A415
|empty weight lb=6000
|empty weight kg=2721
|gross weight lb=8150
|gross weight kg= 3696
|eng1 name=General Electric CF700
|eng1 number=1
|eng1 lbf= 4,200
|eng1 kn= 18.7
|stall speed kts=80
|range nmi=1160
|ceiling ft=47,000
|climb rate ftmin=3,050
|wing loading lb/sqft=45.4
|wing loading kg/m2=221
|thrust/weight=0.52
}}
See also
{{aircontent
|see also=
|related=
|similar aircraft=
}}
References
External links
- {{cite web|url=http://foxtrotalpha.jalopnik.com/never-seen-photos-of-boeings-1960s-stealth-jet-concept-1732308296|title=Never-Seen Photos Of Boeing's 1960s Stealth Jet Concept That Predicted The Future|date=22 September 2015 |publisher=foxtrotalpha.jalopnik.com|accessdate=27 September 2015}}
{{Boeing model numbers}}
{{Stealth aircraft}}
Category:1960s United States experimental aircraft
Category:Cancelled military aircraft projects of the United States