Augmented Satellite Launch Vehicle
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The Augmented Satellite Launch Vehicle or Advanced Satellite Launch Vehicle, also known as ASLV, was a
small-lift launch vehicle A small-lift launch vehicle is a rocket orbital launch vehicle that is capable of lifting or less (by NASA classification) or under (by Roscosmos classification) of payload into low Earth orbit (LEO). The next larger category consists of med ...
five-stage
solid-fuel rocket A solid-propellant rocket or solid rocket is a rocket with a rocket engine that uses solid propellants (fuel/oxidizer). The earliest rockets were solid-fuel rockets powered by gunpowder; they were used in warfare by the Arabs, Chinese, Persia ...
developed by the
Indian Space Research Organisation The Indian Space Research Organisation (ISRO; ) is the national space agency of India, headquartered in Bengaluru. It operates under the Department of Space (DOS) which is directly overseen by the Prime Minister of India, while the Chairman o ...
(ISRO) to place 150 kg satellites into LEO. This project was started by India during the early 1980s to develop technologies needed for a payload to be placed into a
geostationary orbit A geostationary orbit, also referred to as a geosynchronous equatorial orbit''Geostationary orbit'' and ''Geosynchronous (equatorial) orbit'' are used somewhat interchangeably in sources. (GEO), is a circular geosynchronous orbit in altitu ...
. Its design was based on
Satellite Launch Vehicle The Satellite Launch Vehicle or SLV was a small-lift launch vehicle project started in the early 1970s by the Indian Space Research Organisation to develop the technology needed to launch satellites. SLV was intended to reach a height of and c ...
. ISRO did not have sufficient funds for both the
Polar Satellite Launch Vehicle The Polar Satellite Launch Vehicle (PSLV) is an expendable medium-lift launch vehicle designed and operated by the Indian Space Research Organisation (ISRO). It was developed to allow India to launch its Indian Remote Sensing (IRS) satellites ...
programme and the ASLV programme at the same time and the ASLV programme was terminated after the initial developmental flights. The payloads of ASLV were Stretched Rohini Satellites.


Vehicle

The ASLV was a five-stage vehicle. Two strap-on boosters acted as a first stage, with the core stage igniting after
booster Booster may refer to: Amusement rides * Booster (Fabbri ride), a pendulum ride * Booster (HUSS ride), an evolution of the Breakdance ride * Booster (KMG ride), a pendulum ride Arts, entertainment, and media Fictional characters * Booster, a cha ...
burn out. The payload capacity of the ASLV was approximately to an orbit of with a 47-degree inclination. At liftoff, the ASLV generated of thrust. It was a rocket, measuring in length with a core diameter of . The height to diameter ratio of ASLV was very large which resulted in the vehicle being unstable in flight. This was compounded by the fact that many of the critical events during a launch like the core ignition and the booster separation happened at the
Tropopause The tropopause is the atmospheric boundary that demarcates the troposphere from the stratosphere; which are two of the five layers of the atmosphere of Earth. The tropopause is a thermodynamic gradient-stratification layer, that marks the end of ...
where the dynamic loads on the launcher was at the maximum.


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 statistics


Launch history

All four ASLV launches occurred from the ASLV Launch Pad at the Sriharikota Range. For vertically integrated ASLV, many SLV-3 ground facilities were reused but a new launch pad with retractable Mobile Service Structure was constructed within the same launch complex.


See also

*
Comparison of orbital launchers families This article compares different orbital launcher families (although many launchers that are significantly different from other members of the same 'family' have their own separate entries). The article is organized into two tables: the first tabl ...


References

{{Use Indian English, date=January 2014 Space programme of India Satish Dhawan Space Centre ISRO space launch vehicles Expendable space launch systems Vehicles introduced in 1987