air breathing propulsion full report
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project report tiger
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15-02-2010, 06:33 PM



.ppt   Air Breathing Propulsion.ppt (Size: 597 KB / Downloads: 547)

AIR BREATHING PROPULSION
In contrast to a rocket engine which, in addition to the fuel, carries along an oxidizer, an air-breathing propulsion system uses atmospheric air to oxidize the liquid fuel. Air- breathing propulsion systems include the jet engine, the ramjet and the scramjet. The field of air-breathing propulsion involves various disciplines in science and engineering such as fluid dynamics, turbo machinery aerodynamics, thermodynamics, and materials and structures.


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 and presentation

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


FUELS USED


Gaseous Fuel Ramjet
* eg. hydrogen
Liquid Fuel Ramjet
* kerosene , synthetic hydrocarbon fuel
eg. US made RJ1, RJ4 ; French CSD07T , CSD15T
Solid Fuel Ramjet
* polymers loaded with metal particles like Mg ,Al or B
eg. Polyether , polyester , polyurethane

ADVANTAGES

Able to attain high speeds up to mach 5
No moving parts so less wear & tear and minimum losses
Reduced weight and smaller engine
Lighter and simpler than turbojet
Higher temperatures can be employed

DISADVANTAGES

Bad performance at lower speeds
Needs booster to accelerate it to a speed where ramjet begins to
produce thrust
Higher fuel consumption
Maximum operating altitude is limited
High temperature material required

THE PROMISED FUTURE

Reusable Launch Vehicle will replace the space shuttle
Space tourism a big industry
Hypersonic passenger airliner
Airplane which can take a passenger to anywhere on globe
within 2 hours
Space flight made cheaper and more common
It could take the present cost of launching a space shuttle from
$ 10 000 a pound to $ 100 a pound
High speed fighter jets
Long range Hypersonic missiles will come into origin
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sajeev chandran
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04-09-2010, 03:49 PM

i want the full report of air breathing propulsion
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projectsofme
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15-10-2010, 01:37 PM


.ppt   Air Breathing Propulsion.ppt (Size: 597 KB / Downloads: 137)
TECHNICAL ADVANCES IN AIR BREATHING PROPULSION


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 and presentation

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
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