The Alpi Pioneer series of light aircraft, 200, 300 and 400 are developments of the Vidor Champion V or Asso V, designed by Giuseppe Vidor and renamed Gamma Pioneer, of which, the Gamma Pioneer 400 is the largest seating four. Quattrocento is often included in the name. The Pioneer 400 is a low wing monoplane, with a trapezoidal plan wing that has sweep only on the trailing edge and winglets at its tips. The wing structure is wooden with a single box-spar and is covered with pre-preg carbon fibre. Ailerons occupy about half the span; inboard, slotted flaps fill the rest. Both ailerons and flaps are fabric covered. The fuselage and empennage have a wooden structure and carbon fibre skin. The engine is 73.5 kW Rotax 912Sflat-four, driving a variable pitch propeller. The cabin is over the wings, with two pairs of side-by-side seats. Entry is by two upward-opening doors and there is a baggage space behind the rear seats. At the rear the vertical surfaces are straight-edged and swept, with a long dorsal strake. The horizontal surfaces are approximately trapezoidal in plan, with an unswept leading edge. Both the rudder and elevators are fabric covered. The rudder is balanced and both it and the port elevator carry trim tabs. The Pioneer has retractable tricycle landing gear though the nose-wheel remains partially exposed when retracted. An emergency ballistic parachute is an option.
Development
The date of the first flight of the Pioneer 400 is not known but it first appearedin public at the 2009 Friedrichshafen airshow held 2-5 April. Though briefly registered in Italy, by 11 June 2009 the first prototype had been re-registered in the UK as G-CGAJ. It received type approval in late 2010 and full approval in August 2012. Three distinct variants, each available as a kit or a flyaway aircraft, have been marketed. The Ultralight has a maximum take-off weight of to fulfil the European Ultralight limit. Another variant, designated Experimental has an empty weight increased by and an MTOW of. The Pioneer 400T has the same MTOW as the Experimental but is powered by a turbo-chargedRotax 914 flat-four which raises the cruising speed to. Nineteen Gamma Pioneer 400s had been built by November 2014.
Variants
; Gamma Pioneer Ultralight: MTOW to Euro UL limit. ; Gamma Pioneer Experimental: MTOW to Euro Experimental limit. ; Gamma Pioneer 400T: as Experimental but with uprated Rotax 914 engine.
