IAR-22

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IAR-22
IAR 22.jpg
IAR-22
Role Basic trainer
National origin Rumania
Manufacturer Industria Aeronautică Română (IAR), Brasov
First flight c.1934

The IAR-22 was a single engine basic trainer built in Romania in about 1934. It was a low-wing monoplane with two seats in tandem and a fixed conventional undercarriage.

Design[edit]

The IAR.22 was a woodeen, low-wing monoplane with a fixed conventional undercarriage, seating two in tandem, open cockpits. The wings were built around two spruce box spars, with plywood webs; plywood covered the whole wing except for the fabric trailing edges. In plan, the wings were straight-tapered, with most of the taper on the trailing edge, but with rounded tips. The wing trailing edge carried ailerons but no flaps. The tailplane was also straight-tapered, though with the taper more equally distributed between leading and trailing edges. The elevators were split, with a cut-out for rudder movement, and were horn balanced. The fin was also straight-edged but the broad rudder, also horn balanced, had a curved trailing edge.[1]

The fuselage of the IAR.22 was flat sided, tapering to the rear. It was a Warren truss structure with duralumin gussets; the forward fuselage was plywood covered, the remain fabric clad. Rounded decking, together with a head fairing behind the rear cockpit, gave the aircraft a slightly humped profile. The front cockpit was just behind the leading edge of the wing and the rear one at mid-chord. The nose line dropped slightly over the cowling of the 97 kW (130 hp) de Havilland Gipsy Major engine, an inverted air-cooled inline engine carried on a steel mounting and which drove a two-bladed propeller. The undercarriage had a wide track of over 2.5 m (100 in), with near vertical IAR-made shock absorber legs, split axles hinged at the fuselage centre line and trailing struts. The wheels had independent brakes but were not faired in.[1]

It was reported that the IAR.22 "gave very satisfactory results in tests" conducted by the Romanian Air Ministry's Acceptance Commission[1] but there is no record of its adoption by the Romanian Air Force. The design allowed for engines of up to 225 kW (300 hp) to be fitted: the intention was that it should be suitable for wireless, camera and gunnery training.[1]

Specifications[edit]

Data from Flight 1934[1]

General characteristics

  • Capacity: 2
  • Length: 7.52 m (24 ft 8 in)
  • Wingspan: 11.53 m (37 ft 10 in)
  • Gross weight: 880 kg (1,940 lb)
  • Powerplant: 1 × de Havilland Gipsy Major 4-cylinder inverted air-cooled inline, 97 kW (130 hp)
  • Propellers: 2-bladed

Performance

  • Maximum speed: 193 km/h; 104 kn (120 mph)
  • Stall speed: 74 km/h; 40 kn (46 mph)
  • Service ceiling: 5,200 m (17,060 ft) service
  • Rate of climb: 3.3 m/s (650 ft/min) to 1,000 m

References[edit]