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| This is the engine which made the Endurance Flight successful. |
| Type Cylinders Cooling Fuel injection Valves Ignition Fuel Horsepower Bore and stroke Compression ratio Displacement Weight Weight-horsepower ratio Where manufactured Fuel consumption Fuel consumption Oil consumption Outside diameter Overall length Optional accessories |
4-stroke cycle diesel 9---static radial configuration Air Directly into cylinders at a pressure of 6000 psi Poppet type, one per cylinder Compression---glow plugs for starting---air compression 500 psi at 1000 F. Distillate or "furnace oil" 225 at 1950 rpm 4 13/.16 x 6 in. 16:1---maximum combustion pressure 1500 psi 982 cu in. 510 lb without propeller hub 2.26 lb hp U.S.A. .46 lb per hp/hr at full speed .40 lb per hp/hr at cruising .04 lb per hp/hr 45 11/16 in. 36 3/4 in. Starter---Eclipse electric inertia; 6 volts. Special series no. 7 Generator---Eclipse type G-1; 6 volts |
Instruction Book for the Packard-Diesel Aircraft Engine (Detroit: Packard Motor Car Company, 1931), p. 3.
The specifications from SMITHSONIAN ANNALS OF FLIGHT,
The First Airplane Diesel Engine
Packard Model DR-980 of 1928 - Robert B. Meyer 1964
