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 The United States Army Air Service (USAAS)Craven and Cate Vol. 1, p. 9 (also known as the ''"Air Service"'', ''"U.S. Air Service"'' and before its legislative establishment in 1920, the ''"Air Service, United States Army"'') was the aerial warf ...

Design and development

It was a development of the TA-6 (which itself was a one-off redesigned TA-2 with a 220 hp

Lawrance J-1 The Lawrance J-1 was an engine developed by Charles Lanier Lawrance and used in American aircraft in the early 1920s. It was a nine-cylinder, air-cooled radial design. Development During World War I the Lawrance Aero Engine Company of New Yor ...

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 Keystone Aircraft Corporation was an early American airplane manufacturer. History Headquartered in Bristol, Pennsylvania, the company was formed as "Ogdensburg Aeroway Corp" in 1920 by Thomas Huff and Elliot Daland, but its name was quickly ...

Operational history

Versions of the AT-1 were built for the

United States Navy The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...

as training and observation aircraft.

Variants

;TA-6 (Trainer, Air-cooled type 6) :Powered by the 200 hp

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

, 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

; *

Specifications (AT-1)

References