To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
.
Leo
Newton
Brights
Milds

From Wikipedia, the free encyclopedia

B-3A
Keystone B-3A (SN 30-281).jpg
Keystone B-3A (S/N 30-281), the first B-3A built.
Role Light bomber
Manufacturer Keystone Aircraft
Primary user United States Army Air Corps
Number built 63 B-3A/B-5
Variants Keystone B-4
Keystone B-5
Keystone B-6

The Keystone B-3A was a bomber aircraft developed for the United States Army Air Corps by Keystone Aircraft in the late 1920s.

YouTube Encyclopedic

  • 1/3
    Views:
    718
    14 912
    15 261
  • ✪ Keystone Clippers RC Club
  • ✪ The Mystery Of The WWII “Ghost Bomber” That Eerily Landed With No One On Board
  • ✪ Experts Searching Lake Michigan’s Waters Recovered Incredible WWII Aircraft From The Murky Depths

Transcription

Contents

Design and development

The B-3 was originally ordered as the LB-10A (a single-tail modification of the Keystone LB-6), but the Army dropped the LB- 'light bomber' designation in 1930.

Although the performance of the B-3A was hardly better than that of the bombers flown at the end of World War I, it had come a long way. In terms of its safety, it was far superior to its oldest predecessors.

Operational history

The B-3A was a member of the last family of biplanes operated by the US Army; it remained in service until 1940. A few years after it was first produced, the introduction of all-metal monoplanes rendered it almost completely obsolete.

Variants

LB-10
The last of the 17 LB-6s ordered (S/N 29-27) was converted with a re-designed single fin and rudder and two 525 hp Wright R-1750E engines. Delivered to Wright Field on 7 July 1929, it was wrecked on 12 November 1929.
LB-10A
This version used Pratt and Whitney R-1690-3 Hornet engines and was slightly smaller, in both wingspan and fuselage. A total of 63 were ordered (S/N 30-281/343). All were re-designated as the B-3A before any deliveries were made, with the final 27 built as B-5A with Wright engines.
B-3A
Ordered as LB-10A, 36 delivered as B-3A (S/N 30-281/316). The first aircraft was delivered in October 1930.
B-5A
Ordered as B-3A, re-engined with Wright R-1750-3 Cyclone engines, 27 built (S/N 30-317/343).

Operators

 United States
 Philippines

Specifications (B-3A)

General characteristics

Performance

Armament

  • Guns: 3 × .30 in (7.62 mm) machine guns
  • Bombs: 2,500 lb (1,100 kg); 4,000 lb (1,800 kg) on short runs

See also

Related development

Related lists

References

Notes
  1. ^ "Fact Sheet – Keystone B-3A." National Museum of the United States Air Force. Retrieved: 14 July 2017.
Bibliography
  • Andrade, John. U.S. Military Aircraft Designations and Serials since 1909. Leicester, UK: Midland Counties Publications, 1979, pp. 43, 135. ISBN 0-904597-22-9.
  • The Illustrated Encyclopedia of Aircraft (Part Work 1982–1985). London: Orbis Publishing, 1985, p. 2255.
  • Maurer, Maurer. Combat Squadrons of the Air Force, World War II. Maxwell AFB, Alabama: Air Force Historical Studies Office, 1982. ISBN 0-89201-097-5.

External links

This page was last edited on 8 May 2019, at 07:31
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.