The Huff-Daland Type XV Training Water-Cooled TW-5 was a biplane trainer designed by the Huff-Daland Aero Corporation in the early 1920s for the United States Army Air Service.
It was a development of the TA-6 (which itself was a one-off redesigned TA-2 with a 220 hp Lawrance J-1 air-cooled engine) but powered by a 190 hp Wright-Hispano E2. In 1924, the designation system was revised, and the TW-5 became an Advanced Trainer AT-1. In 1927, Huff-Daland Aero Corporation became a division of Keystone Aircraft Corporation.
Operational history
Versions of the AT-1 were built for the United States Navy as training and observation aircraft.
Variants
HN-1
TA-6 (Trainer, Air-cooled type 6)
Powered by the 200 hp Lawrance J-1 air-cooled engine, 1 built
TW-5 (Trainer, Water-cooled type 5)
Powered by the 150-hp (112-kW) Wright-Hispano I engine, 5 built.
AT-1
U.S. Army Advanced Trainer, 10 built.
AT-2
One aircraft tested in a number of single-seat and two-seat versions
HN-1
United States Navy version of the AT-1 powered by a 180hp Wright-Hispano E2 engine, 3 built.
HN-2
United States Navy version of the AT-1 powered by a 200hp Lawrance J-1, 3 built.
HO-1
United States Navy observation version of the HN-1 powered by a 180hp Wright-Hispano E2 engine with interchangeable wheel or float undercarriage, 3 built
Operators
United States
United States Army Air Service
United States Navy
Specifications (AT-1)
General characteristics
Crew: 2
Length: 24 ft 7 in (7.5 m)
Wingspan: 31 ft 2 in (9.5 m)
Gross weight: 2,358 lb (1,070 kg)
Powerplant: 1 × Wright Hisso I V-8 water-cooled piston engine, 150 hp (110 kW)
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