摘要:
A small aircraft is disclosed having a propulsion system including a plurality of Pulse Detonation Engines (PDEs). The engines are arranged within the wings (2a) of the aircraft. The discharge nozzles (8) of the detonation tubes (7) of the detonation engines are provided at different areas of the aircraft and are differently oriented, so as to provide extra manoeuvrability along the three directions. The arrangement of the detonation tubes (7) within the wings (2a) reduces drag and hence the fuel consumption.
摘要:
The combustor (1) comprises a stationary structure (2), and at least one annular rotor supported rotatably about a shaft (4) by contactless suspension means (5-8). The rotor (3) comprises a first and a second main annular portions (3', 3'') which are interconnected by an intermediate annular portion (103) and in each of which there is defined a combustion chamber (20', 20'') that has a directed lateral opening (22, 24) for the ejection of the combustion gases. Each combustion chamber (20', 20'') has an injector (31', 31'') of fuel and oxidizer and an igniter (32', 32'') which extend through a circular opening (50) in the said intermediate annular portion (103) of the rotor (3). The injectors (31', 31'') and the associated igniters (32', 32'') extend through narrow circular slits (30', 30'') defined between each main annular portion (3', 3'') and the intermediate portion (103) of the rotor. This intermediate portion (103) communicates with the region outside the rotor (3) through a circularly extending radial exhaust nozzle (60) of convergent-divergent type connected to the said circular opening (50) and having in cross section the shape of a De Laval nozzle.
摘要:
The combustor (1) comprises a stationary structure (2), and at least one annular rotor supported rotatably about a shaft (4) by contactless suspension means (5-8). The rotor (3) comprises a first and a second main annular portions (3', 3'') which are interconnected by an intermediate annular portion (103) and in each of which there is defined a combustion chamber (20', 20'') that has a directed lateral opening (22, 24) for the ejection of the combustion gases. Each combustion chamber (20', 20'') has an injector (31', 31'') of fuel and oxidizer and an igniter (32', 32'') which extend through a circular opening (50) in the said intermediate annular portion (103) of the rotor (3). The injectors (31', 31'') and the associated igniters (32', 32'') extend through narrow circular slits (30', 30'') defined between each main annular portion (3', 3'') and the intermediate portion (103) of the rotor. This intermediate portion (103) communicates with the region outside the rotor (3) through a circularly extending radial exhaust nozzle (60) of convergent-divergent type connected to the said circular opening (50) and having in cross section the shape of a De Laval nozzle.