. . . . "American Institute of Aeronautics and Astronautics" . . "V p\u0159\u00EDsp\u011Bvku je uveden stav realizace nov\u00E9 ultralehk\u00E9 pohonn\u00E9 jednotky, ur\u010Den\u00E9 pro letouny s n\u00EDzkou hmotnost\u00ED. Z\u00E1kladem jednotky je tak zvan\u00FD %22cold jet%22, kde je tah vyvozov\u00E1n ventil\u00E1torem, poh\u00E1n\u011Bn\u00FDm vysokov\u00FDkonn\u00FDm p\u00EDstov\u00FDm motorem. N\u00EDzk\u00E9 hmotnosti jednotky je dosa\u017Eeno pou\u017Eit\u00EDm kompozit\u016F jako hlavn\u00EDch konstruk\u010Dn\u00EDch materi\u00E1l\u016F. Aerodynamika jednotky byla optimalizov\u00E1na na maxim\u00E1ln\u00ED \u00FA\u010Dinnost a p\u0159\u00EDzniv\u00E1 rozlo\u017Een\u00ED parametr\u016F proudu. Zvl\u00E1\u0161tn\u00ED pozornost byla v\u011Bnov\u00E1na \u0159e\u0161en\u00ED probl\u00E9m\u016F instalace motoru, jeho chlazen\u00ED a celkov\u00E9mu dynamick\u00E9mu chov\u00E1n\u00ED n\u00E1honu ventil\u00E1toru."@cs . "Hanus, Daniel" . . "Ultra Lightweight Ducted Fan Propulsion Unit For Light Aircraft" . . "Ultralehk\u00E1 pohonn\u00E1 ventil\u00E1torov\u00E1 jednotka"@cs . . "456478" . . "P(1M0501)" . "RIV/68407700:21220/07:02134449!RIV08-MSM-21220___" . "1-56347-931-1" . . "\u010Censk\u00FD, Tom\u00E1\u0161" . "2007-09-01+02:00"^^ . "[18280E86B2E0]" . "RIV/68407700:21220/07:02134449" . "Ne\u010D\u00EDslov\u00E1no" . "Ultra Lightweight Ducted Fan Propulsion Unit For Light Aircraft"@en . "Ultralehk\u00E1 pohonn\u00E1 ventil\u00E1torov\u00E1 jednotka"@cs . "Reston" . . "The paper presents the state of the realization of a new ultra-lightweight propulsion unit designed for propelling light aircrafts. The unit concept is based on so called cold jet propulsion principle with a thrust of the unit produced by a ducted fan driven by a high speed high power piston engine. The low weight of the system is assured by a dominant use of composite materials. The aerodynamic design of the propulsion system was optimized to provide high efficiency and required distribution of flow parameters. Special attention was paid to solve problems of the engine installation, its cooling and also of the complex dynamic behavior of the fan drive system."@en . . "9"^^ . "Proceedings, XVIII International Symposium on Air Breathing Engines (ISABE)" . "Ultra Lightweight Ducted Fan Propulsion Unit For Light Aircraft"@en . "2"^^ . "Peking" . "Ultra Lightweight Ducted Fan Propulsion Unit For Light Aircraft" . "The paper presents the state of the realization of a new ultra-lightweight propulsion unit designed for propelling light aircrafts. The unit concept is based on so called cold jet propulsion principle with a thrust of the unit produced by a ducted fan driven by a high speed high power piston engine. The low weight of the system is assured by a dominant use of composite materials. The aerodynamic design of the propulsion system was optimized to provide high efficiency and required distribution of flow parameters. Special attention was paid to solve problems of the engine installation, its cooling and also of the complex dynamic behavior of the fan drive system." . . . . "2"^^ . . . "cold jet; ducted fan; light airraft; propulsion"@en . "21220" . .