TW-5

AT-1s
Role	Trainer Type of aircraft
Manufacturer	Huff-Daland
Primary users	United States Army Air Service United States Navy
Produced	1923
Number built	26

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.

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 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

The

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

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)

Performance

Maximum speed: 112 mph (180 km/h, 97 kn)

References

Wikimedia Commons has media related to Huff-Daland TW-5.

"United States Military Aircraft Since 1908" by Gordon Swanborough & Peter M. Bowers, 1977, 675 pp.

v t e Huff-Daland, Keystone and Keystone-Loening aircraft
Manufacturer designations	HD.8A K-47 K-55 K-78 K-84 K-85
Bombers	LB-1 XLB-1 XLB-3 LB-5 LB-6 LB-7 LB-8 LB-9 LB-10 LB-11 LB-12 LB-13 LB-14 XB-1 XHB-1 B-3 B-4 B-5 B-6
Trainers	TA-2 TA-6 TW-5 AT-1 AT-2 NK
Patrol aircraft	PK
Observation aircraft	XO-15 XOK
Scout aircraft	XS2L
Names	Air Yacht Commuter Pathfinder Pronto

USN observation aircraft designations, pre-1962

Observation

Boeing	OB O2B
Curtiss	OC O2C O3C
Douglas	OD O2D
Elias	EO
Cessna	OE
Grumman	OF
Huff-Daland	HO
Berliner-Joyce	OJ
Keystone	OK
Loening	OL O2L
Martin	MO M2O O3M
Naval Aircraft Factory	NO O2N
Viking	OO
Pitcairn	OP-1 OP-2
Vought	UO O2U O3U O4U O5U
Stinson	OY
Pennsylvania Aircraft	OZ

Observation Scout

Edo	OSE
Naval Aircraft Factory	OSN OS2N
Stearman	OSS
Vought	OSU OS2U

USN/USMC trainer aircraft designations pre–1962

N-series
(1922–1948)

Boeing	NB N2B
Curtiss	NC¹ N2C
Piper	NE
Huff-Daland	HN
Howard	NH
North American	NJ
Keystone	NK
Langley	NL
Martin	NM¹ N2M
Naval Aircraft Factory	NN¹ N2N N3N N4N¹ XN5N
Spartan	NP
Fairchild	NQ
Ryan	NR
Stearman	NS N2S
New Standard	NT
Timm	NT² N2T
Consolidated	NY N2Y N3Y N4Y

T-series
(1948–1962)

Edo	TE
Grumman	TF -1W
North American	TJ T2J T3J
Lockheed	TO
Temco	TT
Lockheed	TV-1 TV-2 T2V

¹ Not assigned
² Assigned to a different manufacturer's type

United States trainer aircraft designations, Army/Air Force and Tri-Service systems

Advanced Trainer
(1925–1948)

Basic Combat
(1936–1940)

Basic Trainer
(1930–1948)

Primary Trainer
(1924–1948)

Main sequence
(1948–present)

1948 redesignations	T-6 T-7 T-11 T-13² T-13A T-13B/D T-17 T-19
New designations	T-28 T-29 T-30 T-31 T-32 T-33 T-34 T-35 T-36 T-37 T-38 T-39 T-40 T-41² T-41 (I) T-41 (II) T-42² T-42 (I) T-42 (II) T-43 T-44 T-45 T-46 T-47 B T-48² YT-48 T-48TS T-49 T-50 T-51 T-52 T-53 T-54

Alternate sequences

1962 redesignations	T-1 T-2
1990– sequence	T-1 T-2¹ T-3 T-4¹ T-5¹ T-6 T-7

¹ Not assigned • ² Assigned to multiple types

v t e USAAS trainer designations 1919-1924
Trainer, Air-cooled	TA-1 TA-2 TA-3 TA-4 TA-5 TA-6
Trainer, Water-cooled	TW-1 TW-2 TW-3 TW-4 TW-5