Examine the following statements about the SSLV-D2 mission and select the correct option:

Question

Examine the following statements about the SSLV-D2 mission and select the correct option:

Statement 1: SSLV-D2 inserted EOS-07, Janus-1, and AzaadiSAT-2 into a 450 km circular orbit utilizing a three-stage vehicle powered entirely by liquid propulsion.

Statement 2: The SSLV-D2 mission showcased rapid deployment capability with low turnaround time and limited ground infrastructure needs.

1. A. Only Statement 1 is correct
2. B. Only Statement 2 is correct (Correct answer)
3. C. 1 and 2 are correct
4. D. Neither 1 nor 2 are correct

Correct Answer

Option B — Only Statement 2 is correct

Detailed Solution & Explanation

The correct answer is Only Statement 2 is correct.

Key Points

• Statement 1 is incorrect on propulsion. The SSLV uses three solid-propellant stages together with a liquid Velocity Trimming Module (VTM) for final orbit adjustment — so it is not "powered entirely by liquid propulsion".
• Statement 2 is correct. The SSLV was designed precisely for low turnaround time, minimal ground infrastructure and rapid, on-demand deployment of small satellites.
• SSLV-D2, launched in February 2023, successfully placed EOS-07, Janus-1 and AzaadiSAT-2 in orbit after the D1 flight had failed to achieve a stable orbit.

Additional Information

• AzaadiSAT-2 was built by around 750 schoolgirls across India under the Space Kidz India programme.
• SSLV can carry roughly 500 kg to low Earth orbit and is intended to be assembled in days by a small team, against the far longer campaign a PSLV requires.
• ISRO's vehicle family for comparison: SSLV (small satellites), PSLV (the workhorse), GSLV Mk II and LVM3 (the heaviest, used for Chandrayaan-3).

प्रश्न (हिन्दी में)

SSLV-D2 मिशन के बारे में निम्नलिखित कथनों की जाँच कीजिए और सही विकल्प चुनिए:

कथन 1: SSLV-D2 ने EOS-07, Janus-1 और AzaadiSAT-2 को पूरी तरह से द्रव प्रणोदन द्वारा संचालित तीन-चरणीय वाहन का उपयोग करके 450 किमी की वृत्ताकार कक्षा में प्रक्षेपित किया।

कथन 2: SSLV-D2 मिशन ने कम समय और सीमित जमीनी बुनियादी ढाँचे की आवश्यकता के साथ तीव्र तैनाती क्षमता का प्रदर्शन किया।

1. A. केवल कथन 1 सही है
2. B. केवल कथन 2 सही है
3. C. 1 और 2 सही हैं
4. D. न तो 1 और न ही 2 सही हैं