AISA-INTA HM-1

The Huarte Mendicoa HM-1 also known as the INTA 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).

The HM.1 was designed by INTA as a two-seat primary training monoplane with a fixed tailwheel landing gear.

It was followed by a number of similar aircraft with equipment and accommodation changes.

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.

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

Specifications

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).

 

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