Keystone B-6

Keystone B-6

Description
Rôle	Light bomber
Crew	Five
First Flight
Entered Service	1930
Manufacturer	Keystone Aircraft Corporation
Number Built	5 Y1B-6, 39 B-6A
Dimensions
Length	48 ft 10 in	14.9 m
Wingspan	74 ft 8 in	22.7 m
Height	17 ft 2 in	5.2 m
Wing area	ft²	m²
Weights
Empty	lb	kg
Loaded	13,350 lb	6,055 kg
Maximum takeoff	lb	kg
Capacity
Powerplant
Engines	Wright R-1820-1 radials (2)
Power	575 hp	429 kW
Performance
Maximum speed (sea level)	120 mph	193.1 km/h
Cruising speed	103 mph	165.7 km/h
Combat range	825 miles	1,327 km
Ferry range	350 miles	563 km
Service ceiling	14,100 ft	4,297 m
Rate of climb	ft/min	m/min
Wing loading	lb/ft²	kg/m²
Power/Mass	.086 hp/lb	.142 kW/kg
Armament
Guns	Browning .30-calibre machine guns (3)
Bombs	2,500lb

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In 1931, the U.S. Army received five working models (Y1B-6s) of the B-6 bomber. (The Y1B- designation, as opposed to a YB- designation, indicates funding outside normal fiscal year procurement). Two of these were diverted from an order of LB-13s; three were modified B-3As. The performance of the Y1B-6s was very similar to that of the Keystone B-4s, due to an engine of equivalent horsepower.

The production model, called the B-6A, was the last biplane bomber purchased by the Army. The performance of the B-6A varied little from the Martin NBS-1 ordered in 1921. Its successor, the monoplane bomber, had a hard time getting accepted. The Douglas Y1B-7 and Fokker XB-8 were originally designed as high-speed reconnaissance planes.

This article is a stub. You can help Wikipedia by expanding it (http://www.mywiseowl.com/index.php?title=Keystone_B-6&action=edit).

External Links

USAF Museum article on Y1B-6 (http://www.wpafb.af.mil/museum/research/bombers/b1-48.htm)
USAF Museum article on B-6A (http://www.wpafb.af.mil/museum/research/bombers/b1-49.htm)
USAF Museum article on LB-13 (http://www.wpafb.af.mil/museum/research/bombers/b1-33.htm)

Related content
Related Development	Keystone LB-13
Similar Aircraft
Designation Series	B-3 - B-4 - B-5 - B-6 - Y1B-7 - XB-8 - Y1B-9
Related Lists	List of military aircraft of the United States - List of bomber aircraft

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