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The Vought XSB3U was an American biplane scout bomber developed by Vought-Sikorsky for the United States Navy during the 1930s. Developed as an alternative to the SB2U Vindicator monoplane, the aircraft proved unsatisfactory to the Navy in comparison, and development was not pursued.

XSB3U-1
Role Scout bomber
Manufacturer Vought-Sikorsky
First flight 1936
Status cancelled
Primary user United States Navy
Number built 1
Developed from SBU Corsair
Type Prototype
Serial 9834[1]

Design and development


In late 1934, the U.S. Navy's Bureau of Aeronautics (BuAer) issued a specification for new scout bomber and torpedo bomber designs.[2] Eight companies submitted ten designs in response, evenly split between monoplanes and biplanes.[3][N 1]

Exemplifying the Bureau of Aeronautics' reluctance to fully embrace the monoplane configuration for carrier-based aircraft,[4] the XSB3U-1 was proposed as a more conventional alternative to Vought's XSB2U-1, which was designed as a modern monoplane. The XSB3U was modified from the last production SBU Corsair,[3] using essentially the same airframe, including a fully enclosed cockpit, and Pratt & Whitney R-1535 radial engine, but with a more streamlined surface and cowling. In addition, the XSB3U had fully retractable landing gear.[4]


Operational history


The XSB3U-1 was delivered to Naval Air Station Anacostia for evaluation by the U.S. Navy in April 1936;,[5] at the same time as its primary competitor, the XSB2U-1.[4] Comparative testing of the two aircraft during 1936 proved the complete superiority of the monoplane configuration;[6] on the same power, the SB2U-1 was 15 miles per hour (24 km/h) faster despite being larger and heavier than the biplane.[4] However, the Navy was impressed by the XSB3U's method of landing gear retraction, which provided a more streamlined surface after retraction than most other methods used at the time.[7]

Following the end of the evaluation, the XSB3U was retained by the Navy, and used for experimental and liaison purposes by the Navy,[4] also being used by NACA at Langley Field for testing of tail loads starting in August 1938, continuing through January 1939[8] when the aircraft was returned to the Navy, being retired shortly thereafter.[9][10]


Operators


 United States

Specifications (XSB3U-1)


Data from [4]

General characteristics

Performance

Armament


See also


Related development

Aircraft of comparable role, configuration, and era

Related lists


References


Notes
  1. The designs submitted, in total, were the Brewster SBA, Curtiss SBC Helldiver, Douglas TBD Devastator, Great Lakes XB2G, Great Lakes XTBG, Grumman XSBF, Hall XPTBH, Northrop BT (which became the Douglas SBD Dauntless), Vought SB2U Vindicator and Vought XSB3U.[3]
Citations
  1. Baugher 2009
  2. Dann 1996, p.20.
  3. Doll 1992, p.4.
  4. Johnson 2008, p.309.
  5. Swanborough and Bowers 1976, p.399.
  6. Donald 1997, p.902.
  7. Doll 1992, p.5.
  8. "Appendix E". NASA Langley Research Center. Retrieved 4 September 2017.
  9. Hansen 1987, p.491.
  10. ID # EL-2000-00189 Archived 2009-04-02 at the Wayback Machine NASA Langley Research Center - Multimedia Repository. Accessed 2011-01-18.
Bibliography



На других языках


- [en] Vought XSB3U

[fr] Vought XSB3U

Le Vought XSB3U était un bombardier-éclaireur (en) biplan américain développé par le constructeur texan Chance Vought pour l'US Navy pendant les années 1930.



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