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Knoll Aircraft KN-3




The KN-2 and KN-3 models shared the common airframe of the KN-1, though they were upgraded with more powerful 300 and 425 horsepower engines. The KN-3 also had an open-place cockpit in back of the cabin, allowing the seating of one additional passenger inside.

On was built in 1929, registered X9950, powered by a 425 hp Pratt and Whitney R-1340.

On June 12, 1929, test-pilot Russell Dick flying the Knoll KN-3, beat the US Army’s Lieutenant Walker piloting a Thomas-Morse pursuit plane in a race performing at the Wichita Air Show. On June 21 he performed again at the Aerial Wedding of Kansas, Oklahoma, Missouri, and Texas. He did steep power dives from 3000 feet to 100 feet, thrilling the crowds and demonstrating the strength of the airframe.


Engine: 1 × Pratt and Whitney R-1340-9, 425 hp (317 kW)
Wingspan: 33 ft 6 in (10.21 m)
Wing area: 264 sq.ft (24.5 sq.m)
Length: 24 ft 3 in (7.39 m)
Empty weight: 2,100 lb (953 kg)
Gross weight: 4,000 lb (1,814 kg)
Range: 800 miles (1,287 km)
Maximum speed: 175 mph (282 km/h)
Service ceiling: 18,000 ft (5,486 m)
Rate of climb: 1,200 ft/min (6.1 m/s)
Crew: One pilot
Capacity: 4 passengers






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