CRYOGENIC ENGINE
KARTHIK NAYAK
FAILURE OF MISSION GSLV-D3
GEO-SYNCHRONOUS SATELLITE LAUNCH VEHICLE
DATE : April 15, 2010
PLACE : Satish dhawan space centre Shar, Sriharikota.
SPECIALITY : It was the first satellite which was using INDIA developed cryogenic engine.
STATUS : Failure.
Why it failed…???
WHAT IS CRYOGENIC ENGINE…???
THE COOLEST HOTENGINE
Why Cryogenics…???
Propulsion system: The power Centre of a launcher.
Specific Impulse (Isp):
Index of efficiency of a propulsion system.Isp= Thrust / Weight flow rate of propellants. Traditionally expressed in seconds.
Ispof different propulsion systems (sea-level):
Solid propulsion –265 sEarth-storable liquid propulsion –285 sCryogenic propulsion –450 s
Operating Cycle - Gas Generator. Propellant Combination - LOX / LH2. Thrust Nominal (Vacuum) - 200 kN. Operating Thrust Range - 180 kN to 220 kN. Chamber Pressure (Nom) - 6 MPa. Engine Burn Duration (Nom) - 595 seconds. Total Flow rate - 462 kg/s. Nozzle Area ratio – 100. Mass - 588 kg.
SPECIFICATION
High Specific Impulse Non-toxic and non-corrosive propellants Non-hypergolic, improved ground safety
DEMERITS: Low density of liquid Hydrogen –more structural mass Low temperature of propellants -Complex storage & transfer systems and operations Hazards related to cryogens Overall cost of propellants relatively high Need for ignition system.
MERITS:
WHY WE NEED THIS…???BECAUSE, SATELLITE ARE BECOMING HEAVIER….
INSAT 1A [1982] –1150 kgINSAT 2A [1992] –1900 KgINSAT 3C [2002] –2750 KgINSAT 4A [2005] –3080 kg
NEXT MISSION OF ISRO WITH
THE COOLEST HOTENGINE
WE ALL HOPE IT WILL BE
A SUCCESSFUL LAUNCH BY INDIA
THANK YOU
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