INTRODUCTION TO

l ROCKET PROPULSION

NASA’ S SPACE SHUTTLE

SPACE SHUTTLE

OPERATING PRINCIPLEROCKET OPERATES ON PRINCIPLE OF NEWTON’S THIRD LAW OF MOTION

SSME

MAIN PARTS

1-FUEL 2-OXIDIZER3-COMBUSTION CHAMBER

4-NOZZEL

FUELS

CRYOGENIC –Liquid N2H4 and its variants

Solid rocket boosters- (Al powder) Monopropellant - hydrogen peroxide

WORKING OF ENGINE

ENGINE CYCLES

1-PRESSURE FED CYCLE 2-GAS GENERATOR CYCLE 3-STAGED COMBUSTION CYCLE

4-COMBUSTOR TAP OFF CYCLE

5-EXPANDER CYCLE

PRESSURE FED CYCLE

GAS GENERATOR CYLE

STAGED COMBUSTION CYCLE

GAS GENERATOR CYLE

EXPANDFER CYCLE

COMBUSTOR TAP OFF CYCLE

DESIGN PARAMETERS

1-SPECIFIC IMPULSE 2-NET THRUST 3-THROTTLING 4-THRUST TO WIEGHT RATIO

5-ENERGY EFFICIENCY

PROBLEMS ENCOUNTERED

1-COOLING 2-MECHANICAL ISSUES 3-COMBUSTION INSTABILITIES

4-EXHAUST NOISE

ALTERNATIVE TECHNOLOGY

SOLAR ELECTRIC PROPULSION

SEP

1-SOLAR ARRAY

2-POWER PROCESSING UNIT

3-HALL THRUSTER

WORKING OF ION THRUSTER

QUESTIONS ???