The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 156
... aircraft , whose introduction in the 1940s and ' 50s produced radi- cal changes in military and civil aviation . Previously , aircraft propulsion had been by means of a piston engine whose reciprocating motion produced intermittent ...
... aircraft , whose introduction in the 1940s and ' 50s produced radi- cal changes in military and civil aviation . Previously , aircraft propulsion had been by means of a piston engine whose reciprocating motion produced intermittent ...
Page 159
... aircraft speeds did not yet justify development of such an engine . DESIGN PROBLEMS AND OTHER ASPECTS OF JET TECHNOLOGY Jet aircraft engines operate under extreme conditions of temperature , pressure , and rotational speed in order to ...
... aircraft speeds did not yet justify development of such an engine . DESIGN PROBLEMS AND OTHER ASPECTS OF JET TECHNOLOGY Jet aircraft engines operate under extreme conditions of temperature , pressure , and rotational speed in order to ...
Page 406
... aircraft with solid and liquid propellant rockets , flight of an aircraft with rocket propulsion alone , and development of spontaneously igniting liquid propellants of the kind that were to be used in the Apollo Command and Lunar ...
... aircraft with solid and liquid propellant rockets , flight of an aircraft with rocket propulsion alone , and development of spontaneously igniting liquid propellants of the kind that were to be used in the Apollo Command and Lunar ...
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