Q. With reference to India’s satellite launch vehicle, consider the following statements:
1.The Augmented Satellite Launch Vehicle (ASLV) was the first Indian launch vehicle to have liquid stages.
2.PSLVs launch the satellites useful for Earth resources monitoring whereas GSLVs are designed mainly to launch communication satellites.
3.The PSLV XL is a four-staged launch vehicle with the first and third stages using solid rocket motors; and the second and fourth stages using liquid rocket engines.
Which of the statements given above are correct?
Explanation: Statements 2 and 3 are correct
Statement 1 is incorrect: Polar Satellite Launch Vehicle (PSLV) is India’s third-generation launch vehicle, first successfully launched in October 1994. It is the first Indian launch vehicle to have liquid stages.
Statement 2 is correct: PSLV is designed mainly to deliver the “earth-observation” or “remote-sensing” satellites with lift-off mass of up to about 1750 Kg to Sun-Synchronous circular polar orbits of 600-900 Km altitude. The GSLV is designed mainly to deliver the communication-satellites to the highly elliptical (typically 250 x 36000 Km) Geosynchronous Transfer Orbit (GTO).
Statement 3 is correct: The PSLV-XL is a four-stage launch vehicle, using solid rocket motors in the first and third stages and liquid rocket engines in the second and fourth stages. This configuration allows for efficient and powerful launch capabilities.
