Cumulus motor glider, Cumulus glider by U.S. Aviation, Ultralight Soaring's Cumulus motor glider

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Ultralight motor glider,  Cumulus ultralight glider.

Wing Span 43 feet (13.1 m.)
Wing Area 140 square feet (12.7 sq. m.)
Length 20 feet (6.1 m.)
Empty Weight 360 pounds (164 kg) before options
Gross Weight 640 pounds (291 kg)
Fuel Capacity 5 gallons (19 l.)
Pilot Weight Range 200 to 250 pounds (90-115 kg)
Best Glide Ratio 20:1 (assumes wheelpants and fullest enclosure)
Best Sink Rate 190 feet/minute (0.95 m/sec.)
Max Speed 90 mph (144 km/h)
Cruise Speeds 35-75 mph (55-120 km/h)
Typical Cruise 55-60 mph (95 km/h)
Stall Speed 32 mph (51 km/h) [Stall speed assumes best flaps and light options.]
Climb Rate 800 fpm (4 m/sec.)
Range over 200 miles (320 km)
Limit Load +4.4 G and -2.0 G
For those looking for an affordable motor glider U.S. Aviation has just want your looking for the Cumulus. Over the past year the company has been working on tooling, production equipment, drawings, molds, control systems, manuals etc and is now delivering kits to customers.

The kit should take about 250 hours to build. One customer with the factories assistance spent from a week going from kit to finishing off the kit less wiring.

The Cumulus that was on display was about 80 per cent complete and is expected to be up and flying shortly after the show. Plans are to have two at Airventure, one with the standard wing, the other a Sportplane version with a shorter wing.

The Cumulus can be powered by the 477, or 503 Rotax, or the MZ single cylinder engine. With the 447 take off distance is about 150 feet climb rate 700 feet per minute sink rate 190 feet per second with a 20 to 1 glide ratio.

For more information contact:
Ultralight Soaring Aviation
1830 East Vienna Street
Anna, IL 62906
618-833-3187
ekstrom@midwest.net
 

Cumulus motor glider, Cumulus glider by U.S. Aviation, Ultralight Soaring's Cumulus motor glider

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