U.S. NAVAL AVIATION RESOURCE CENTER > TRANSPORT/CARGO AIRCRAFT > PREVIOUS PAGE
Douglas RD-4 Dolphin of the United States Coast Guard, circa 1942.
[Source: U.S. Navy Photo]
VARIANTS:
RD-1
One aircraft, powered by 2x 435 hp (324 kW) Wright R-975E radial engines, operated by the U.S. Navy.
RD-2
Four Dolphin aircraft of two distinct types. One Aircraft similar to the Y1C-21 and powered by 2x 500 hp (373 kW) Pratt & Whitney R-1340-10 engines, for the U.S. Coast Guard. Two were U.S. Navy VIP staff transports similar to the Y1C-26 powered by 2x 450 hp (336 kW) Pratt & Whitney R-1340-96 engines. The final aircraft was completed for the U.S. Navy as the first presidential aircraft, for Franklin D. Roosevelt, powered initially by 2x 410 hp (306 kW) Pratt & Whitney R-1340-1 engines and later by 2x 500 hp (373 kW) Pratt & Whitney R-1340-10 engines, seating five though it was reportedly never used by the President.
RD-3
A utility transport version of the RD-2, six of which were built for the U.S. Navy, powered by 2x 500 hp (373 kW) Pratt & Whitney R-1340-4 or by 2x 500 hp (373 kW) Pratt & Whitney R-1340-96 engines.
RD-4
Ten aircraft for the U.S. Coast Guard, powered by 2x 420 hp (313 kW) Pratt & Whitney Wasp C1 engines.
Sources:
Wikipedia
U.S. NAVAL AVIATION RESOURCE CENTER > TRANSPORT/CARGO AIRCRAFT > PREVIOUS PAGE