Design and Preliminary Development of an Engine for Small Unmanned Air Vehicles
AERONAUTICAL RESEARCH LABS MELBOURNE (AUSTRALIA)
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This report describes a program of work aimed at demonstrating the advantages of the opposed piston two stroke engine for use in small, propeller- driven, unmanned air vehicles requiring power of about 10 to 20 kW. Analysis of the requirements for engines for this duty showed the opposed piston configuration as offering the best compromise in terms of specific output, specific fuel consumption, level of vibration and complexity. Initial feasibility was demonstrated using a small engine of 67mL swept volume. The major part of the development, including selection and development of a scavenge air compressor, was carried out using an engine of 225 mL swept volume. The maximum power obtained was 18.9 kW 25HP at 7500 rpm and the engine is considered to have potential for considerable further development.
- Pilotless Aircraft
- Jet and Gas Turbine Engines