15th May 2023 (7 Topics)
1
May
2
May
3
May
4
May
5
May
6
May
8
May
9
May
10
May
11
May
12
May
13
May
15
May
16
May
17
May
18
May
19
May
20
May
22
May
23
May
24
May
25
May
26
May
27
May
29
May
30
May
31
May
ISRO successfully starts testing its semi-cryogenic engine
Context
The Indian Space Research Organisation (ISRO) has successfully begun testing of its semi-cryogenic engine that will power future launch vehicles.
Key-highlights
- ISRO has initiated the series of tests required for qualifying and validating its most-powerful liquid-fuelled engine yet, one that is powered by especially refined kerosene (dubbed as 'ISROsene') and super-cooled liquid oxygen.
- Once ready, this 2000kN Semicryogenic Engine and its stage (associated components, fuel tanks etc.) will be replacing the current L110 (core stage) of India's largest rocket - Launch Vehicle Mark 3(LVM3).
- This is meant to significantly add to the lifting power of the LVM3 rocket.
Why ISRO is focusing on Semi-Cryogenic Engine?
- The semi-cryogenic engine is an advancement in rocket technology over the cryogenic engine, which ISRO currently uses for the Geosynchronous Satellite Launch Vehicle (GSLV) which can carry up to 4 tonnes of payload into higher earth orbit.
- For increased payload, a cryogenic engine would not be enough and hence the development of semi-cryogenic engines is a key stage in India’s space programme.
- Disadvantages posed by cryogenic engines:
- The use of liquid hydrogen at extremely low temperatures is very difficult to store being the smallest gas
- The cost of using liquid hydrogen is a prohibitive
- Benefits of Semi-Cryogenic Engine:
- Better fuel: A semi-cryogenic engine uses refined kerosene instead of liquid hydrogen. It uses liquid oxygen as an oxidiser.
- Kerosene is much lighter than liquid fuel and can be stored at a normal temperature. The Kerosene combined with liquid oxygen provides more thrust to the rocket. Compressed Natural Gas (CNG) can also be used as fuel.
- Less space: It also occupies less space which makes it possible to have more propellant in the fuel compartment or tank.
- It is more environment-friendly, cost-effective and more powerful compared to a cryogenic engine. It can carry a huge weight to a higher altitude. Moreover, the payload can be increased since the weight of the fuel will come down by 500kg.
- Better fuel: A semi-cryogenic engine uses refined kerosene instead of liquid hydrogen. It uses liquid oxygen as an oxidiser.
More Articles
Courses
Study
Notes
Home
Resources
More
