Collings Foundation's Messerschmitt Me 262 B-1C "White 1"
The "c" suffix refers to the new J-85 power plant and has been informally assigned with the approval of the Messerschmitt Foundation in Germany. "A" models, which signified installation of the Jumo 004 engine. Experimental "B" models used the BMW 003 power plant, leaving "C" as the next unassigned letter.
During the war, all operational Me 262As were single seaters; A-1a were the standard interceptor version used by JG units, A-2a were the fighter-bomber version used by KG units, A-5a were recon versions, K-3a and K-4a were trial and experimental models, B-1a were two seat conversion trainers (15 units built), B-1a/U1 were night fighters converted from B-1a's (temporary solution, 7 units converted), B-2a were definitive night fighter versions (1 unit built before the war ended).
The B-2a version was stretched so that twin standard "tubs" would fit into the mid fuselage section, the aft fuselage remaining a standard A model unit. The C models were point defense interceptors using bi-fuel rockets to supplement the jet engines.
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