Beaujon Ultralights Easy Flyer
Single-seat single-engined low-wing mono-plane with conventional three-axis control. Wing has unswept leading and trailing edges, and constant chord; conventional tail. Pitch control by elevator on tail; yaw control by fin-mounted rudder. Control inputs through stick for pitch/roll and pedals for yaw. Wing braced from below by struts; wing profile FX-72 MS-150 modified; double-surface. Undercarriage has two wheels with tailskid. Fuselage partially enclosed. Engine mounted above wing driving tractor propeller.
The Easy Flyer was one of the earliest microlights offered in plan form for amateur constructors. Designed by H Beaujon, it was first built in 1976 and offered for sale the following year. It is of classical configuration, remaining very close to the traditional aircraft concept, and differs really only in those aspects of specification and performance where change was essential to qualify it as an ultralight. H Beaujon was one of the first designers to advise using two--stroke engines for aeronautical use, and in this instance chose a Rockwell JLO L-395 single-cylinder motor weighing 59 lb (27 kg).
Engine: Rockwell JLO L-395, 24.5hp at 5500rpm.
Prop diameter/pitch: 46x20 inch, 1.04 x 0.45 m
Power/unit area: 0.28 hp/sq.ft, 3.0 hp/sq.m.
Length overall: 15.3 ft, 4.64 m
Height overall: 4.8ft, 1.42m.
Wing span: 25.1ft, 7.87m
Total wing area: 89 sq.ft, 8.3sq.m
Constant chord at root: 3.8ft, 1.11m
Wing aspect ratio: 7.5/1.
Empty weight: 175 lb, 79kg
Max take-off weight: 372 lb, 169kg.
Payload: 197 lb, 89kg.
Max wing loading: 4.18 lb/sq.ft, 20.4kg/sq.m.
Max power loading: 15.2 lb/hp, 6.9kg/hp
Max level speed: 79mph, 128kph.
Cruising speed: 65mph, 104 kph
Stalling speed: 28 mph, 46 kph.
Max climb rate at SL: 490 ft/min, 2.5 m/s.