Propulsive thrust generating apparatus

• Main Author: PITT PAUL A
• Format: Patent
• Language: English
• Published: 13.06.1956
• Subjects: BLASTING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS; HEATING; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

750,412. Generating combustion products under pressure. SOLAR AIRCRAFT CO. March 23, 1953, No. 7987/53. Class 51(1). [Also in Group XXVI] In a jet propulsion system, exhaust gases from a reciprocating internal combustion engine 11 which contain combustible components are fed to the inlet 21 of a mixing and combustion device. Air is supplied by ram pressure through the duct 29 and mixes with the exhaust gases flowing through the duct 26, in the mixing section within the duct 31. A perforated pipe 27 open at both ends is disposed vertically at the outlet end of the duct 26 to assist the mixing. A mixture of fuel and air is tapped from the engine supercharger 13 and is fed through the pipe 39 into an annular manifold 33. The fuel and air mixture issues through orifices 41 into a stabilised combustion zone 42 where it is ignited by a spark plug 43 to form a stabilised pilot flame which causes ignition of the exhaust gas and air mixture issuing from the mixing section 31 into the main combustion zone within the duct 24. The gases issue through a tail pipe 17 to a propulsion nozzle. In a second embodiment, Fig. 5, the engine exhaust gases are fed through a duct 55 to an annular passage 56 around the duct 50 through which air is supplied under ram pressure. The gases and air mix in the duct 53 and issue into the duct 58 where they are ignited by a stabilised pilot flame formed as in the first embodiment.