15-10-2010, 01:37 PM
Air Breathing Propulsion.ppt (Size: 597 KB / Downloads: 153)
TECHNICAL ADVANCES IN AIR BREATHINGPROPULSION
AIR BREATHING PROPULSION
Propulsive device
generates the net thrust to overcome inertia and gains speed
Air breathing propulsive device
uses oxygen in air to burn fuel and to generate thrust
limited to dense atmosphere up to a height of about 100 km
only jet propulsion presented in this seminar
Turbojet
Engines with rotating machinery
Used by most civil and military aircrafts operating at subsonic
speeds ( Mach <1 )
General Electric , Pratt & Whitney , Rolls Royce
Ramjet
Engines without rotating machinery
Used for supersonic missiles up to Mach 5
Soviet SA-6 ,British Sea Dart , French Snecma M-88
Scramjet
Engines devoid of rotating machinery
Will be used for hypersonic missiles above Mach 5
Nasa X-43 , British HOTOL , German Sanger
TURBOJET
Air sucked in through the inlet diffuser
Compressed and used to burn the fuel in the combustor
Combustion products used to drive the turbine
Exhaust through the nozzle to generate jet propulsion