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Satellite Launch Vehicle

First launch vehicle of the Indian Space Research Organisation

Summary

First launch vehicle of the Indian Space Research Organisation

Field	Value
image	SatLaunchVehicle.jpeg
caption	Satellite Launch Vehicle
height	22 m
mass	17000 kg
diameter	1 m
manufacturer	ISRO
function	Small-lift launch vehicle
country-origin	India
location	LEO
altitude	400 km
kilos	41.5 kg
status	Retired
first	10 August 1979
last	17 April 1983
launches	4
success	2
fail	1
partial	1
sites	Satish Dhawan Space Centre
derivatives	ASLV, PSLV
payloads	Rohini
type	stage
stageno	First
engines	1 solid
SI	253 isp
burntime	seconds
fuel	PBAN (Polybutadiene acrylonitrile) Solid
propmass	8.6 t
thrust	46 tf
type	stage
stageno	Second
engines	1 solid
SI	267 sec
burntime	40 seconds
fuel	PBAN (Polybutadine Acrylo Nitrate) Solid
propmass	3 tonnes
thrust	20 tonnes
type	stage
stageno	Third
engines	1 solid
SI	277 sec
burntime	45 seconds
fuel	High energy propellant (HEF 20) Solid
propmass	1 tonnes
thrust	6.3 tonnes
type	stage
stageno	Fourth
engines	1 solid
SI	283 sec
burntime	33 seconds
fuel	High energy propellant (HEF 20) Solid
propmass	262 kg
thrust	2.4 tonnes

|country-origin = India

The Satellite Launch Vehicle or SLV was a small-lift launch vehicle project started in the early 1970s by ISRO to develop the technology needed to launch satellites. SLV was intended to reach a height of 400 km and carry a payload of . The first experimental flight of SLV, in August 1979, was a failure. The first successful launch took place on 18 July 1980.

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

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. The aerodynamic characterization research was conducted at the National Aerospace Laboratories' 1.2m Trisonic Wind Tunnel Facility.

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.

Flight No.	Date / time (UTC)	Rocket,
Configuration	Launch site	Payload	Payload mass	Orbit	User	Launch
outcome	E1	E2	D1	D2
10 August 1979	Satellite Launch Vehicle	SLV Launch Pad	Rohini Technology Payload	35 kg	Low Earth	ISRO
Faulty valve caused vehicle to crash into the Bay of Bengal 317 seconds after launch.
18 July 1980	Satellite Launch Vehicle	SLV Launch Pad	Rohini RS-1	35 kg	Low Earth	ISRO
It was the first satellite successfully launched by the indigenous launch vehicle SLV. It provided data on the fourth stage of SLV.
31 May 1981	Satellite Launch Vehicle	SLV Launch Pad	Rohini RS-D1	38 kg	Low Earth	ISRO
Orbit too low. Decayed after 9 days
17 April 1983	Satellite Launch Vehicle	SLV Launch Pad	Rohini RS-D2	41.5 kg	Low Earth	ISRO
Earth Observation satellite

Launch statistics

;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

References

"Launch Vehicles". Department of Space, Government of India.
"SLV".
"First Successful Launch of SLV-3 - Silver Jubilee". ISRO.
(2022-06-06). "Bengaluru: 1.2m trisonic wind tunnel at National Aerospace Laboratories completes 55 years of service".
"Rohini Technology Payload".
"Silver jubilee of the first successful SLV-3".

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

space-programme-of-india isro-space-launch-vehicles microsatellite-launch-vehicles satish-dhawan-space-centre vehicles-introduced-in-1979

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