Virtual Bookstore Citation Title PROPULSION AND POWER SUPPLIES FOR UNMANNED VEHICLES. VOLUME I. ENGINES FOR SMALL PROPELLER-DRIVEN RPVS Author(s) BLANK Corporate Author(s) ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRANCE) Report Date 11/1/1977 Page Count 105 Abstract In this report engines in the power range up to 100 hp are studied for application into small propeller-driven RPVs. From an inventory of existing engines, it is found that a number of two-and four-stroke piston engines in this power class are available, but most of them will not fulfill the requirements for RPV-applications with respect to reliability, quality control, noise vibrations, etc. Up till now no other types of shaft-power engines are available for application to small RPVs although turboshaft engines and possibly also electrically-driven propellers might offer advantages for some missions. For payloads between 10 and 50 kg and flight endurances of up to 3 hours some parametric calculations are presented for fixed-wing rotary-wing vehicles, to illustrate vehicle sizes and engine power requirements. Some recommendations are given for the future development of piston-and turbo-shaft engines suitable for propeller-driven RPVs, emphasizing the need for Demonstrator Engine Programs. Data on actual and projected engines and some typical specifications are added in appendici. (Author) Price: $9.95 Available as PDF for download.   Prices are plus sales tax when purchased within New York State and shipping charges, if applicable