Science and Technology Current Affairs Archives | Page 4 of 4

Isro successfully fires improved 3rd stage of SSLV rocket

Why in News?

ISRO successfully tested an improved version of the third stage (SS3) of its Small Satellite Launch Vehicle (SSLV).

SSLV

The SSLV is a three-stage, all-solid launch vehicle developed by ISRO. It is specifically designed to provide cost-effective, on-demand launch services for small satellites (10 kg to 500 kg) into Low Earth Orbit (LEO).

Payload Capacity	Up to 500 kg to 500 km planar orbit; 300 kg to Sun-Synchronous Orbit (SSO).
Stages	3 stages (all solid fuel) + a liquid-based Velocity Trimming Module (VTM) for precise orbit injection
Integration Time	Quick turnaround of 72 hours (vs. 70 days for PSLV).
Manpower	Can be integrated by a team of only 6 people.

Exam TIP

Remember the difference:
SSLV → Small satellites, low cost, quick launch
PSLV → Polar missions, versatile
GSLV → Heavy payloads, geostationary orbit

https://www.indiatoday.in/science/story/isro-successfully-fires-improved-third-stage-of-newly-developed-sslv-rocket-2844418-2025-12-31

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Dhruv-NG Helicopter First Flight: India’s Civil Aviation Milestone

Why in News?

India achieved a major milestone in civil aviation as Hindustan Aeronautics Limited (HAL) successfully conducted the first flight of Dhruv New Generation (NG) helicopter in Bengaluru. This marks HAL’s entry into the civil helicopter market

Dhruv-NG:

Dhruv-NG is a 5.5-tonne, twin-engine, multi-role helicopter.
It is fully designed and developed in India by HAL.
Powered by the Shakti civil engine.

Additional Concepts for Exams

Recently Shakti Civil Engine received certification from the Directorate General of Civil Aviation (DGCA). It is the first indigenous aircraft engine to get DGCA approval for manufacturing.

Exam Tip:

Dhruv-NG = Civil helicopter + HAL + Shakti engine + DGCA certification

https://timesofindia.indiatimes.com/city/bengaluru/indias-dhruv-ng-helicopter-makes-maiden-flight-5-5-tonne-twin-engine-max-speed-285-km/h-heres-what-we-need-to-know/articleshow/126264605.cms

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