Marendaz Trainer
Encyclopedia

The Marendaz Trainer was a two-seat low-wing training aircraft
Trainer (aircraft)
A trainer is a class of aircraft designed specifically to facilitate in-flight training of pilots and aircrews. The use of a dedicated trainer aircraft with additional safety features—such as tandem flight controls, forgiving flight characteristics and a simplified cockpit arrangement—allows...

 built in the UK just before World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

. Only one was completed.

Development

In 1939 the newly established Marendaz Aircraft Ltd. built a two-seat, single-engined low wing cantilever monoplane
Monoplane
A monoplane is a fixed-wing aircraft with one main set of wing surfaces, in contrast to a biplane or triplane. Since the late 1930s it has been the most common form for a fixed wing aircraft.-Types of monoplane:...

 called the Marendaz Trainer. Donald Marendaz, the company's founder, claimed to have designed it though this has been disputed, not least because Marendaz had claimed the work of others as his own before. If it was not his, the true designer is unknown.

The Trainer was in most respects a conventional open cockpit two seater of its time. Its fuselage and wings were wooden structures skinned with plywood. Only the control surfaces were fabric covered. The wings were built around two box spars and consisted of a constant chord centre section, integral with the fuselage and carrying no dihedral, plus bolt-on outer panels with marked dihedral and slight taper on the trailing edge. The outer panels carried both ailerons and built-in leading edge slots with no moving parts.

The fuselage was flat sided, with a conventional rounded decking running forward as far as the engine cowling. It tapered to the rear, more in plan than elevation and carried a tailplane with a sharply swept leading edge mounted on top of the fuselage and externally braced from below. The elevators were more rounded, and well separated to allow rudder movement. The fin and horn balanced rudder together were almost triangular, with the latter rounded at tip and base. The rear cockpit was over the trailing edge of the wing and the front cockpit at the leading edge. The Trainer was powered by a 90 hp (67 kW) Blackburn Cirrus Minor four cylinder inverted in-line engine, driving a two-bladed propeller.

The Trainer's undercarriage was unusual and possibly vulnerable. Each wheel was mounted on a stub axle, independent of the other and swung on a V member formed from heavy duty square tubing, with its ends hinged to front and rear spar towards the outer end of the centre section, so the assembly could swing laterally. Each V plus wheel was restrained by a radius arm hinged on the front spar near the fuselage, allowing a small amount of upwards and outward travel for the wheel. The radius arms were sprung inside the fuselage. In order to get the very wide track of 93 in (2.36 m), both the V and radius arms were heavily splayed and the angle between them was much smaller than normal, a cause for some concern. The tailskid was mounted without a fuselage aperture, to avoid the trapping of grass and dirt.

The sole Trainer, registered G-AFZX first flew in November 1939 with R.A. Wyndham at the controls. It seems to have flown well, though it is not known if the front seat was ever occupied or ballasted. By this time the UK was at war, so the aircraft went to the RAF Halton Squadron of the Air Training Corps
Air Training Corps
The Air Training Corps , commonly known as the Air Cadets, is a cadet organisation based in the United Kingdom. It is a voluntary youth group which is part of the Air Cadet Organisation and the Royal Air Force . It is supported by the Ministry of Defence, with a regular RAF Officer, currently Air...

 in 1940 and no more was heard of it.

Specifications

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