Waco D series

The Waco D Series was a series of military biplanes created between 1934 and 1937 by the Waco Aircraft Company for export to countries other than the United States. The three letter designation indicated the engine, airframe, and series.[1] Armed versions had a -A suffix.[2]

Variants
CHD
Multipurpose military biplane with 250 hp (190 kW) Wright J-6-7 Whirlwind radial engine.
JHD-A
Powered by 365 hp (272 kW) Wright Whirlwind radial engine. 6 exported to Uruguay.[3]
S2HD
Multipurpose military export biplane with 450 hp (340 kW) Pratt & Whitney Wasp Junior SB radial engine. 1 exported to Cuba
S3HD
Multipurpose military biplane with 400 hp (300 kW) Pratt & Whitney Wasp Junior TB. 1 built.
S3HD-A
Armed variant of S3HD powered by Wasp Junior engine,[lower-alpha 1] one exported to Cuba.[3]
WHD
Multipurpose military biplane with 420 hp (310 kW) Wright J-6-9 Whirlwind engine. 5 built, including 4 exported to Nicaragua. Max speed: 191 mph, Cruise speed: 166 mph, Seats: 2[5]
CMD
Multipurpose military biplane with 250 hp (190 kW) Wright J-6-7 Whirlwind. None built.

Operators
 Cuba
 Uruguay
Six JHD-As purchased in 1938.[3]

Specifications (JHD-A)

Data from Jane's All the World's Aircraft 1938[7]

General characteristics

  • Crew: 2
  • Length: 25 ft 6+1⁄2 in (7.79 m)
  • Wingspan: 32 ft 8+5⁄8 in (9.97 m)
  • Height: 8 ft 11+1⁄2 in (2.73 m)
  • Wing area: 256.3 sq ft (23.81 m2)
  • Empty weight: 2,505 lb (1,136 kg)
  • Gross weight: 3,800 lb (1,724 kg)
  • Fuel capacity: 89 US gal (74 imp gal; 340 L)
  • Powerplant: 1 × Wright R-975-E2 9-cylinder air-cooled radial engine, 350 hp (260 kW)at sea level

Performance

  • Maximum speed: 170 mph (270 km/h, 150 kn) at sea level
  • Cruise speed: 155 mph (249 km/h, 135 kn)
  • Service ceiling: 15,500 ft (4,700 m)
  • Rate of climb: 1,100 ft/min (5.6 m/s)

Armament

  • Guns: 2× machine guns[3]

Notes
  1. Rated at 240 hp (180 kW) according to Robinson,[3] and at 320 hp (240 kW) according to Aerofiles,[4]

References
  1. "WACO D Series".
  2. "Waco D series / Waco CHD / Waco JHD / Waco S3HD / Waco WHD / Waco CMD / Waco S2HD Super Sport".
  3. Robinson 1988, p. 34.
  4. "Waco". Aerofiles. Retrieved September 10, 2022.
  5. "Waco D series / Waco CHD / Waco JHD / Waco S3HD / Waco WHD / Waco CMD / Waco S2HD Super Sport".
  6. Hagedorn 1993, pp. 12–13.
  7. Grey & Bridgman 1938, pp. 309c–310c.
  • Grey, C. G.; Bridgman, Leonard, eds. (1938). Jane's All the World's Aircraft 1938. London: Sampson Low, Marston & Company, Ltd.
  • Hagedorn, Daniel P. (1993). Central American and Caribbean Air Forces. Tonbridge, UK: Air-Britain (Historians) Ltd. ISBN 0-85130-210-6.
  • Robinson, Harry (July 1988). "Les WACO type D". Le Fana de l'Aviation (in French). No. 224. pp. 30–34.

Waco Coding System:

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