Satellite Launch Vehicle
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The Satellite Launch Vehicle or SLV was a small-lift launch vehicle project started in the early 1970s by the Indian Space Research Organisation (ISRO) to develop the technology needed to launch satellites. SLV was intended to reach a height of Template:Convert and carry a payload of Template:Nobreak.[1] The first experimental flight of SLV, in August 1979, was a failure.[2] The first successful launch took place on 18 July 1980.
It was a four-stage rocket with all solid-propellant motors.[2]
The first launch of the SLV took place in Sriharikota 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.[3] The aerodynamic characterization research was conducted at the National Aerospace Laboratories' 1.2m Trisonic Wind Tunnel Facility.[4]
Launch history
All four SLV launches occurred from the SLV Launch Pad at the Sriharikota 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 site | Payload | Payload mass | Orbit | User | Launch outcome |
|---|---|---|---|---|---|---|---|---|
| E1 | 10 August 1979 | Satellite Launch Vehicle | SLV Launch Pad | Rohini Technology Payload[6] | 35 kg | Low Earth | ISRO | Template:Failure |
| Faulty valve caused vehicle to crash into the Bay of Bengal 317 seconds after launch.[5] | ||||||||
| E2 | 18 July 1980 | Satellite Launch Vehicle | SLV Launch Pad | Rohini RS-1 | 35 kg | Low Earth | ISRO | Template:Success [5] |
| It was the first satellite successfully launched by the indigenous launch vehicle SLV. It provided data on the fourth stage of SLV. | ||||||||
| D1 | 31 May 1981 | Satellite Launch Vehicle | SLV Launch Pad | Rohini RS-D1 | 38 kg | Low Earth | ISRO | Template:Partial failure |
| Orbit too low. Decayed after 9 days[5] | ||||||||
| D2 | 17 April 1983 | Satellite Launch Vehicle | SLV Launch Pad | Rohini RS-D2 | 41.5 kg | Low Earth | ISRO | Template:Success[5] |
| Earth Observation satellite | ||||||||
Launch statistics
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- Decade-wise summary of SLV launches
| Decade | Successful | Partial success | Failure | Total |
|---|---|---|---|---|
| 1970s | 0 | 0 | 1 | 1 |
| 1980s | 2 | 1 | 0 | 3 |
| Total | 2 | 1 | 1 | 4 |
See also
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References
Template:Expendable launch systems Template:Indian space programme