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Heldeberg Marathon
Blue Heron Marathon
The Heldeberg Marathon, also called the Blue Heron Marathon, was an American powered parachute, that was designed and produced by Heldeberg Designs of Altamont, New York.
The Marathon was designed to comply with the US FAR 103 Ultralight Vehicles two-seat trainer rules and was marketed as a light-sport aircraft. The aircraft takes its name from its design goal of an aircraft with long range and endurance and features a range of 115 mi (185 km). It features a parachute-style high-wing, two-seats-in-tandem accommodation, tricycle landing gear and originally a single 50 hp (37 kW) Rotax 503 engine in pusher configuration. The 64 hp (48 kW) Rotax 582 was the standard engine used on later models.
The aircraft is built from a combination of bolted dural aluminium and stainless steel tubing. It features a double ring propeller guard that has been roll-over tested. The 10 U.S. gallons (38 L; 8.3 imp gal) fuel tank is made from aluminium. In flight steering is accomplished via foot pedals, or optionally a control stick, that actuate the canopy brakes, creating roll and yaw. On the ground the aircraft has lever-controlled nosewheel steering. The main landing gear incorporates gas strut suspension. The aircraft is factory supplied in the form of an assembly kit that requires 30–50 hours to complete.
Originally marketed by the factory under their own name, the aircraft was later marketed under the brand name Blue Heron, although the manufacturer remained the same. The selling price was US$21,995 in 2012, though production is now completed.
Blue Heron Marathon
Powerplant: 1 × Rotax 582, 64 hp (48 kW)
Length: 9 ft 8 in (2.95 m)
Wingspan: 39 ft 6 in (12.04 m)
Height: 6 ft 6 in (1.98 m)
Wing area: 500 sq ft (46 m2)
Empty weight: 308 lb (140 kg)
Gross weight: 850 lb (386 kg)
Fuel capacity: 10 U.S. gallons (38 L; 8.3 imp gal)
Cruise speed: 32 mph (51 km/h; 28 kn)
Range: 115 mi (100 nmi; 185 km)
Rate of climb: 900 ft/min (4.6 m/s)
Wing loading: 1.7 lb/sq ft (8.3 kg/sq.m)
Crew: one
Capacity: one passenger
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