Augmented Satellite Launch Vehicle

Augmented Satellite Launch Vehicle

Augmented Satellite Launch Vehicle
Function Small launch vehicle
Manufacturer ISRO
Country of origin India
Size
Height 24 metres (79 ft)
Diameter 1 metre (3.3 ft)
Mass 41,000 kilograms (90,000 lb)
Capacity
Payload to
400km LEO 		150 kilograms (330 lb)
Associated rockets
Family SLV, Polar Satellite Launch Vehicle, GSLV
Launch history
Status Retired
Launch sites Sriharikota
Total launches 4
Successes 1
Failures 2
Partial failures 1
First flight 24 March 1987
Last flight 4 May 1994
Notable payloads SROSS
First Stage
Engines 2 solid
Thrust 502.6 kilonewtons (113,000 lbf) each
Specific impulse 253 sec
Burn time 49 seconds
Fuel Solid
Second Stage
Engines 1 solid
Thrust 702.6 kilonewtons (158,000 lbf)
Specific impulse 259 sec
Burn time 45 seconds
Fuel Solid
Third Stage
Engines 1 solid
Thrust 304 kilonewtons (68,000 lbf)
Specific impulse 276 sec
Burn time 36 seconds
Fuel Solid
Fourth Stage
Engines 1 solid
Thrust 90.7 kilonewtons (20,400 lbf)
Specific impulse 277 sec
Burn time 45 seconds
Fuel Solid
Fifth Stage
Engines 1 solid
Thrust 35 kilonewtons (7,900 lbf)
Specific impulse 281 sec
Burn time 33 seconds
Fuel Solid

The 'Augmented Satellite Launch Vehicle or Advanced Satellite Launch Vehicle, also known as ASLV, was a five-stage solid-fuel rocket developed by the Indian Space Research Organisation (ISRO) to place 150 kg satellites into LEO.[1] This project was started by India during the early 1980s to develop technologies needed for a payload to be placed into a geostationary orbit.[2][3] Its design was based on Satellite Launch Vehicle.[4] ISRO did not have sufficient funds for both the Polar Satellite Launch Vehicle programme and the ASLV programme at the same time and the ASLV programme was terminated after the initial developmental flights.[2] The payloads of ASLV were Stretched Rohini Satellites.[4]

Vehicle

The ASLV was a five-stage vehicle. Two strap-on boosters acted as a first stage, with the core stage igniting after booster burn out. The payload capacity of the ASLV was approximately 150 kg to an orbit of 400 km with a 47-degree inclination.[4]

At liftoff, the ASLV generated 92,780 kgf of thrust. It was a 41,000 kilogram rocket, measuring 23.5 metres in length with a core diameter of one metre.[4]

History

The ASLV made four launches, of which one was successful, two failed to achieve orbit, and a third achieved a lower than planned orbit which decayed quickly. The type made its maiden flight on 24 March 1987, and its final flight on 4 May 1994.

Launch History

All four ASLV launches occurred from the SLV Launch Pad at the Sriharikota High Altitude Range. The launch pad was converted to an ASLV launch complex after the closure of SLV launch programme.

Flight Launch date/time (UTC) Launch pad Payload Payload mass Result
D1 24 March 1987[5]
06:39		 SLV Launch Pad SROSS A 150 kg Failure
First stage did not ignite after strap-on burnout.[4]
D2 13 July 1988[5]
09:13		 SLV Launch Pad SROSS-B 150 kg Failure
Insufficient control gain[4]
D3 20 May 1992[5]
00:30		 SLV Launch Pad SROSS-C 106 kg Partial failure[6]
Lower than expected orbit and incorrect spin-stabilisation, payload decayed quickly.
D4 4 May 1994[5]
00:00		 SLV Launch Pad SROSS-C2 113 kg Success[6]
...

See also

References

  1. ↑ "ASLV". Retrieved 28 December 2014.
  2. 1 2 http://www.bharat-rakshak.com/SPACE/space-launchers-aslv.html
  3. ↑ Menon, Amarnath (15 April 1987). "Setback in the sky". India Today. Retrieved 18 January 2014.
  4. 1 2 3 4 5 6 http://www.astronautix.com/lvs/aslv.htm
  5. 1 2 3 4 McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 19 December 2011.
  6. 1 2 http://heasarc.gsfc.nasa.gov/docs/heasarc/missions/sross3.html
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