INTA HM.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
First flight	1943
Number built	200

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. (AISA).^[1]

Development[]

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[]

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[]

 Spain

• Spanish Air Force

Specification HM.1[]

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[]

Notes[]

Bibliography[]

External links[]

• Media related to Huarte Mendicoa HM-1 at Wikimedia Commons

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