National Museum of the USAF   Right Corner Banner
Join the Air Force

Home > Fact Sheets > Keystone XB-1B

KEYSTONE XB-1B

Posted 6/25/2009 Printable Fact Sheet
 
Photos
Previous ImageNext Image
Keystone XB-1B
The only Keystone XB-1B built (S/N 27-334). (U.S. Air Force photo)
Download HiRes

The Keystone XB-1B was the designation assigned to the Huff-Daland XB-1 after the original Packard 2A-1530 engines were replaced with Curtiss V-1570-5 Conqueror engines (Huff-Daland was reorganized and renamed Keystone in 1927 -- between the time the XB-1 was built and the XB-1B was modified). The XB-1A designation was skipped because it was already assigned to the Dayton-Wright XB-1A "Bristol Fighter."

The improved B aircraft had better performance than the original, but still didn't compare favorably to other aircraft of the period and never entered production. The performance of the Curtiss XB-2; for example, was significantly better than the XB-1B, but the Curtiss aircraft was initially rejected also; in part because it was too big to fit into existing hangars.


Type Number built/
converted
Remarks
XB-1B 1 (cv) XB-1 with new engines


TECHNICAL NOTES:
Armament: Six .30-cal. machine guns and 2,500 lbs. of bombs (up to 4,000 lbs. for short distances)
Engines: Two Curtiss V-1570-5 Conqueror V-12s of 600 hp each
Top speed: 117 mph at sea level
Service ceiling: 15,000 ft.
Range: 700 miles with normal full bomb load of 2,500 lbs.
Span: 85 ft. 0 in.
Length: 62 ft. 0 in.
Height: 19 ft. 3 in.
Weight: 16,500 lbs. gross
Crew: Five
Serial number: 27-334

Click here to return to the Bomber Aircraft index.







 Inside the Museum

ima cornerSearch

ima cornerAircraft

 


tabCategories
tabRelated Links
tabConnect

Museum Virtual TourMuseum Facebook PageMuseum Twitter PageMuseum Instagram
Museum Google Plus PageMuseum Pinterest PageMuseum YouTube ChannelMuseum Flickr Page
Museum PodcastsMuseum E-newsletter Sign-upMuseum RSS Feeds



Site Map      Contact Us     Questions     USA.gov     Security and Privacy notice     E-publishing  
Suicide Prevention    SAPR   IG   EEO   Accessibility/Section 508   No FEAR Act