The USA interwar planes (1 Viewer)

Keystone B-4A '8' of the 28th Bombardment Squadron over Coron Bay in the Philippines. Photo appears to be dated 10 August 1935.

RG-18-AA-180-18-ac.jpg
 
a long weight.....
Was that for a short ton or a long ton????
 
Can of squelch oil, anyone?
 
Atlantic (ex Fokker) O2A Transports. (first 2 anyway).
Atlantic-Fokker C-2A.jpg
ATTACH=full]850009[/ATTACH]
 
The single Keystone XO-15 s/n 28-195 was accepted at Wright Field on 13 February 1929 and passed to Brooks Field on 9 July. It was surveyed there on 2 August 1930.

28-195.jpg
 
The Curtiss YP-23 was converted from P-22 s/n 32-278 with a V1570-29 Conqueror engine and an exhaust-driven General Electric F-2C turbosupercharger.

32-278 (1).jpg


It was the last biplane delivered to the USAAC but proved obsolete compared to aircraft such as the Boeing P-26. Nevertheless Curtiss developed the design further, streamlining the installation to create a truly graceful design;

32-278.jpg


Final version (by this time designated XYP-23) removed the chin radiator and experimented with a total-loss water cooling system; it too was not a success and this rather elegant machine was surveyed at Wright Field on 6 January 1936.
 
Another design which was overtaken by the pace of aircraft design in the pre-war period, Curtiss XP-31 Swift s/n 33-178 was originally flown with a 700 hp Wright R1750 Cyclone radial engine.

33-178 (4).jpg


It failed to live up to its name, and despite being re-engined with a less draggy Curtiss Conqueror V12, it still fell below the performance of the P-26. Nevertheless its main claim to fame was in being the Air Corps' first fighter with a fully-enclosed cockpit.

33-178 (3).jpg


Re-delivered with Wright Field experimental prototype designation XP-934, it was declared obsolete in December 1935 and passed to the Edgewood Arsenal on 14 July 1936 where it was surveyed that December.
 
Atlantic (ex Fokker) O2A Transports. (first 2 anyway).
View attachment 850010ATTACH=full]850009[/ATTACH]
Small typo: those are C-2A, not O2A. The three directly behind are Ford C-9 Trimotors. The last two are more difficult to identify, but look like a Keystone bomber, and possibly a Thomas Morse O-19.
 

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