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

Home > Fact Sheets > Thomas Morse XP-13 Viper

THOMAS MORSE XP-13 VIPER

Posted 11/2/2009 Printable Fact Sheet
 
Photos
Previous ImageNext Image
Thomas Morse XP-13
Thomas Morse XP-13 "Viper" side view. (U.S. Air Force photo)
Download HiRes

Only one XP-13 (S/N 29-453) was built. The Viper was designed for the Curtiss H-1640-1 Chieftain engine and initially flew with it. Serious cooling problems with the twin-row in-line radial engine could not be overcome, and the XP-13 was converted to the XP-13A after an engine change (Pratt & Whitney R-1340-9) and a vertical fin redesign. The XP-13 fuselage was constructed of a metal framework with a corrugated aluminum skin giving the aircraft a very unique appearance.


Type Number built/
converted
Remarks
XP-13 1 Original aircraft
XP-13A 1 (cv) XP-13 with R-1340-9 engine


TECHNICAL NOTES:
Engine: Curtiss H-1640-1 Chieftain air-cooled twin-row in-line radial of 600 hp
Maximum speed: 172 mph
Service ceiling: 20,775 ft.
Length: 23 ft. 6 in.
Span: 28 ft. 0 in.
Height: 8 ft. 5 in.
Maximum weight: 3,256 lbs.

Click here to return to the Pursuit Aircraft archives.







 Inside the Museum

ima cornerSearch

ima cornerAircraft

 


tabCategories
tabRelated Links
tabConnect

Museum Virtual TourMuseum PodcastsMuseum E-newsletter Sign-upMuseum RSS Feeds
Museum Facebook PageMuseum Twitter PageMuseum Pinterest PageMuseum Flickr PageMuseum YouTube Channel



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