1982: Leading Edge Air Foil Inc, 331 South 14th Street, Colorado Springs, Colorado 80904, USA.
Trike and hang glider builder
Era
Leach Calypso
Centre mounted joy stick, rudder pedals, nosewheel steerable through rudder pedals.
Construction: Aluminium, Dacron.
Engine: Cuyuna ULII-02 (429cc) 35hp.
Static thrust: 225 lbs.
Empty wt: 278 lbs.
Wing span: 33ft.
Wing area: 160 sq.ft.
Height: 6 ft 7 in.
Length: 19ft.
Fuel cap; 5 USG.
Max wt: 500 lbs.
Stall speed: 27 mph.
Max speed: 63 mph.
Vne: 88 mph.
Climb rate: 800 fpm @ 32 mph.
Design limit: +6, -4g.
Glide ratio: 9-1.
Wing loading: 3.13 lbs/sq.ft.
Power loading: 14.19 lbs/hp.
Leach Aircraft
1984: 1973 Frienship Dr, Suite F, El Cajon, CA 92020, USA.
UL builder
Lea Kestrel Kermit
The design and production of the ultralight Kestrel was the product of the efforts of Cec Lea, one of the pioneers of ultralight aircraft design and construction in Australia. A single seat, high wing, tractor engine aircraft it first appeared about 1990 and a number of examples were registered in the 95.10 registration series as late as mid-2000.
Lea sold both completed aircraft and kits for owner construction. All were powered by the Austrian Rotax 503 engine and many, if not all, were fitted with a Brolga three blade carbon/glass composite propeller. Some 16 Kestrels were built.
Lea Kestrel Kermit
Engine: Rotax 503, 37kW (50hp)
Cruising Speed: 100km/hr / 67mph
Range: 280km / 175mile
Lazarow LAZ-7 / LAZ-7M
The prototype of the Bulgarian LAZ-7 two-seat primary trainer of 1946 was the first post-war design to be built in Bulgaria. The LAZ-7 was matched against the Yugoslavian Aero 2.
Both the LAZ-7 and Aero 2S were powered by the Czech 160 hp Walter Minor 6-III and in the eliminating trials the LAZ-7 was successful. The decision was taken to build the LAZ-7 in series production at the Bulgarian State Aircraft Works, and to replace the Walter engine with a Russian-designed M-11FR radial driving a controllable pitch, two blade Visch V-501 prop.
The LAZ-7M production type fuselage construction is of welded steel tube and wood, and covered with fabric. Both the wing and tailplane are fully cantilever, of mixed wood and metal construction, and fabric covered. No flaps are fitted. Both the main undercarriage and tailwheel are fixed.
LAZ-7
Engine: 160 hp Walter Minor 6-III
LAZ-7M
Engine: M-11FR
Prop: controllable pitch, two blade Visch V-501
Max speed: 149 mph
Cruise: 133 mph
AUW: 2039 lb
Landing speed: 53 mph
Service ceiling: 17,220 ft
Range: 525 mi
Endurance: 3 hr 56 min
Time to 3280 ft: 4 mn 47 sec
Lazarow, Cwietan
Bulgaria
Worked for DAR before Second World War. From 1946 built the LAZ-7M; LAZ-8 four-seat taxi; LAZ-11 ambulance version of -8; and LAZ-12 single-seat aerobatic aircraft. All except the LAZ-7 sporting monoplane were built in prototype form only. The LAZ-1 OH light helicopter was abandoned before completion. All powered aircraft production in Bulgaria ceased in 1961.
Lázaga and Carbajal Cuba
Joaquín Lázaga and Benigno Carbajal’s biplane “Cuba” was built in Cuba in 1911. A simple little pusher biplane.
Lawson L-4
The L-4 three-engined airliner of 1922-1923 had sleeper berths and a shower.
Lawson L-2
The twin-engined L-2 of 1920, built for the Lawson Airline Company.
Lawson Aircraft Corp
USA
W. Lawson of Wisconsin designed a pursuit aircraft in 1918; not built. Followed by two-seat training biplane, and the twin-engined L-2 of 1920, built for the Lawson Airline Company. The L-4 three-engined airliner of 1922-1923 had sleeper berths and a shower.
