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Satellite Launch Vehicle

From Wikipedia, the free encyclopedia
First launch vehicle of the Indian Space Research Organisation
This article is about the Indian launch vehicle. For the general term, seeLaunch vehicle. For newer Indian small launch system, seeSmall Satellite Launch Vehicle.

Satellite Launch Vehicle
FunctionSmall-lift launch vehicle
ManufacturerISRO
Country of originIndia
Size
Height22 m (72 ft)
Diameter1 m (3.3 ft)
Mass17,000 kg (37,000 lb)
Capacity
Payload toLEO
Altitude400 km (250 mi)
Mass41.5 kg (91 lb)
Associated rockets
Derivative workASLV,PSLV
Launch history
StatusRetired
Launch sitesSatish Dhawan Space Centre
Total launches4
Success(es)2
Failure1
Partial failure1
First flight10 August 1979
Last flight17 April 1983
Carries passengers or cargoRohini
First stage
Propellant mass8.6 t (19,000 lb)
Powered by1solid
Maximum thrust450 kN (100,000 lbf)
Specific impulse253 seconds (2.48 km/s)
Burn timeseconds
PropellantPBAN (Polybutadiene acrylonitrile)Solid[1]
Second stage
Propellant mass3 tonnes
Powered by1solid
Maximum thrust20 tonnes
Specific impulse267 sec
Burn time40 seconds
PropellantPBAN (Polybutadine Acrylo Nitrate)Solid
Third stage
Propellant mass1 tonnes
Powered by1solid
Maximum thrust6.3 tonnes
Specific impulse277 sec
Burn time45 seconds
PropellantHigh energy propellant (HEF 20)Solid
Fourth stage
Propellant mass262 kg
Powered by1solid
Maximum thrust2.4 tonnes
Specific impulse283 sec
Burn time33 seconds
PropellantHigh energy propellant (HEF 20)Solid

TheSatellite Launch Vehicle orSLV was asmall-lift launch vehicle project started in the early 1970s byISRO to develop the technology needed to launch satellites. SLV was intended to reach a height of400 kilometres (250 mi) and carry a payload of40 kg (88 lb).[2] The first experimental flight of SLV, in August 1979, was a failure.[3] The first successful launch took place on 18 July 1980.

It was a four-stage rocket with all solid-propellant motors.[3]

The first launch of the SLV took place inSriharikota on 10 August 1979. The fourth and final launch of the SLV took place on 17 April 1983.

It took approximately seven years to realise the vehicle from start. The solid motor case for first and second stage were fabricated from 15 CDV6 steel sheets and third and fourth stages from fibre reinforced plastic.[1] The aerodynamic characterization research was conducted at theNational Aerospace Laboratories' 1.2m Trisonic Wind Tunnel Facility.[4]

Launch history

[edit]

All four SLV launches occurred from theSLV Launch Pad at theSriharikota High Altitude Range. The first two launches were experimental (E) and the next 2 were designated as developmental (D) as this was the first launch vehicle being developed by India not intended for a long service life.[5]

Flight No.Date / time (UTC)Rocket,
Configuration
Launch sitePayloadPayload massOrbitUserLaunch
outcome
E110 August 1979Satellite Launch VehicleSLV Launch PadRohini Technology Payload[6]35 kgLow EarthISROFailure
Faulty valve caused vehicle to crash into theBay of Bengal 317 seconds after launch.[5]
E218 July 1980Satellite Launch VehicleSLV Launch PadRohini RS-135 kgLow EarthISROSuccess[5]
It was the first satellite successfully launched by the indigenous launch vehicle SLV. It provided data on the fourth stage of SLV.
D131 May 1981Satellite Launch VehicleSLV Launch PadRohini RS-D138 kgLow EarthISROPartial failure
Orbit too low. Decayed after 9 days[5]
D217 April 1983Satellite Launch VehicleSLV Launch PadRohini RS-D241.5 kgLow EarthISROSuccess[5]
Earth Observation satellite

Launch statistics

[edit]
1
1979
1980
1981
1982
1983
  •   Failure
  •   Partial failure
  •   Success
Decade-wise summary of SLV launches
DecadeSuccessfulPartial successFailureTotal
1970s0011
1980s2103
Total2114

See also

[edit]

References

[edit]
  1. ^ab"First Successful Launch of SLV-3 - Silver Jubilee"(PDF). ISRO. Archived fromthe original(PDF) on 12 November 2020. Retrieved11 February 2019.
  2. ^"Launch Vehicles". Department of Space, Government of India. Archived fromthe original on 1 February 2014. Retrieved19 January 2014.
  3. ^ab"SLV".isro.gov.in. Archived fromthe original on 29 May 2017. Retrieved5 September 2015.
  4. ^"Bengaluru: 1.2m trisonic wind tunnel at National Aerospace Laboratories completes 55 years of service".ANI. 6 June 2022. Retrieved22 November 2024.
  5. ^abcdeSubramanian, TS."Silver jubilee of the first successful SLV-3".Frontiline. Archived fromthe original on 8 February 2018. Retrieved8 February 2018.
  6. ^"Rohini Technology Payload". Archived fromthe original on 31 July 2017. Retrieved28 December 2014.

External links

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