Cessna 337 Super Skymaster

The most successful push-pull aircraft.

Cessna 337
photo: Marc Lacoste

The Cessna 337 Skymaster is an American twin-engine civil utility aircraft designed in a push-pull configuration. It was considered the most commercially successful push-pull attempt in terms of numbers produced.

Manufacturer:
Cessna
Country:
United States
Manufactured:
1963 to: 1982
ICAO:
C337
Price:
US$.048 million (1965)

Specifications

Avionics:
Bendix King Avionics
Engine:
2x Continental IO-360-C
piston
Power:
210 horsepower
Max Cruise Speed:
173 knots
320 Km/h
Approach Speed (Vref):
60 knots
Travel range:
839 Nautical Miles
1,554 Kilometers
Fuel Economy:
Service Ceiling:
19,500 feet
Rate of Climb:
1200 feet / minute
6.10metre / second
Take Off Distance:
471 metre - 1,545.26 feet
Landing Distance:
500 metre - 1,640.40 feet
Max Take Off Weight:
1,996 Kg
4,400 lbs
Max Landing Weight:
1,647 Kg
3,631 lbs
Max Payload:
792 Kg
1,746 lbs
Fuel Tank Capacity:
128 gallon
485 litre
Baggage Volume:
0.8 m3 / 28 ft3
Seats - Economy / General:
6 seats
Seats - Business Class:
Seats - First Class:
Cabin Height:
1.2 metre - 3.94 feet
Cabin Width:
1.1 metre - 3.61 feet
Cabin Length:
2.9 metre - 9.51 feet
Exterior Length:
9.07 metre - 29.76 feet
Tail height:
2.8 metre - 9.19 feet
Fuselage Diameter:
1.2 metre - 3.94 feet
Wing Span / Rotor Diameter:
11.8 metre - 38.71 feet
Wing Tips:
no winglets
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Description

In February 1965, the 337 Super Skymaster was unveiled to the public. It has an exterior length of 9.07 meters, a height of 1.9 meters, and a fuselage diameter of 1.2 meters. With its cabin width of 1.1 meters and length of 2.9 meters, the aircraft can accommodate up to five passengers and one crew.

It was a larger aircraft outfitted with more powerful engines, retractable undercarriage, and a dorsal air scoop for the rear engine. The engines are located in the nose and rear of its fuselage. Twin booms stretch aft of the wings to the fins, with the rear engine between them.

The 337 Super Skymaster may not be the most famous twin in the market, but it was successful in obtaining its main goal which is to eliminate asymmetric thrust and reducing the pilot’s workload in case of an engine failure.

During an engine-out occurrence, typical piston twins normally require to be handled delicately and carefully in case the aircraft get too slow and roll over on its back. The manufacturing company, Cessna solved the issue by aligning the two engines with the airframe centerline, providing pilot the safety of a second engine without the cost of adverse handling. The 337 was granted its own class rating by the Federal Aviation Administration, restricting pilots to centerline-thrust twins only.

The Super Skymaster is powered by two Continental IO-360-C engines with a rated thrust of 210 horsepower each. It is an air-cooled, horizontally opposed six-cylinder piston engine. The aircraft can fly up to 19,500 feet and climb at a rate of 1,200 feet per minute. However, the 337 was not exceptionally fast compared to other aircraft of its kind. The maximum speed could only go up to 173 knots at sea level, and the cruise speed is 125 knots at 10,000 feet. It has a travel range of 839 nautical miles. The take-off and landing distances are 471 meters and 500 meters respectively.

The aircraft has a maximum take-off weight of 1,996 kg and a maximum landing weight of 1,647 kg. The maximum payload is 792 kg, while the fuel capacity is 128 US gal.