The INTA HM.1, also known as Huarte Mendicoa HM-1, was a 1940s Spanish primary trainer designed by the Instituto Nacional de Técnica Aeronáutica (INTA) and built for them by Aeronáutica Industrial S.A..[1]

INTA HM.1
An HM. 1 at the Museo del Aire, Cuatro Vientos, Madrid.
Role Primary trainer
National origin Spain
Manufacturer Aeronáutica Industrial S.A.
Designer Pedro Huarte-Mendicoa
First flight 1943
Number built 200

Development

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The HM.1 was designed by INTA as a two-seat primary training monoplane with a fixed tailwheel landing gear.[1] It was followed by a number of similar aircraft with equipment and accommodation changes.[1] The last of the family was the HM.7 built in 1947 which was an enlarged four-seat version powered by a 240 hp (179 kW) Argus As 10C engine, the HM.7 was the last powered aircraft designed by the Institute.[1]

Variants

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HM.1
Two-seat primary trainer
HM.2
enclosed-cabin version of the HM.1 with retractable landing gear.
HM.3
open-cockpit floatplane variant
HM.5
single-seat advanced trainer
HM.7
enlarged four-seat version
HM.9
two-seat glider tug

Operators

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  Spain

Specification HM.1

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Data from Jane's Fighting Aircraft of World War II[2]

General characteristics

  • Crew: 2
  • Length: 7.65 m (25 ft 0 in)
  • Wingspan: 9.65 m (31 ft 8 in)
  • Height: 2.20 m (7 ft 2.25 in)
  • Wing area: 14 m2 (150.6 sq ft)
  • Empty weight: 620 kg (1,364 lb)
  • Gross weight: 850 kg (1,870 lb)
  • Powerplant: 1 × Elizalde G-IV-B Tigre 4-cylinder four-cylinder linear motor , 110 kW (150 hp)

Performance

  • Maximum speed: 230 km/h (142.8 mph, 124.1 kn)
  • Cruise speed: 195 km/h (121 mph, 105 kn)
  • Endurance: 3 hours 30 minutes
  • Service ceiling: 5,000 m (16,400 ft)

References

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Notes

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  1. ^ a b c d Orbis 1985, p. 2195
  2. ^ Bridgman 1988, p. 156

Bibliography

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  • Bridgman, Leonard (1988). Jane's Fighting Aircraft of World War II. New York: Crescent Books. ISBN 0-517-67964-7.
  • The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.
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