DRDO, HAL & Defence Orgs — Set 6

Correct Answer: B. Indigenous helicopter designs

HAL's Rotary Wing Research and Design Centre (RWRDC), located in Bangalore, was established to design and develop indigenous helicopter technologies. RWRDC was instrumental in designing the ALH Dhruv, which was the first major indigenous helicopter programme. Currently, RWRDC is working on the Indian Multi-Role Helicopter (IMRH) — a medium-lift helicopter to replace Mi-17 fleets — and the Advanced Light Helicopter (ALH-Mk IV). IMRH will be a 13-15 tonne class helicopter with twin turboshaft engines.

Correct Answer: B. DRDE (Defence Research and Development Establishment), Gwalior

DRDE (Defence Research and Development Establishment) at Gwalior, Madhya Pradesh, is DRDO's premier laboratory for NBC defence. DRDE develops individual and collective protection equipment against nuclear, biological, and chemical (NBC) threats including protective clothing, respirators, detection equipment, and decontamination systems. DRDE also works on biological threat agents, vaccines for biodefence, and chemical detection sensors. DRDE's products are essential for military operations in contaminated environments and for civil disaster response to CBRN (Chemical, Biological, Radiological, Nuclear) incidents.

Correct Answer: B. Explosive materials, warheads, and ammunition for defence

ERDL (Explosives Research and Development Laboratory) at Pune, now renamed HEMRL (High Energy Materials Research Laboratory), is DRDO's lab for high-energy materials including explosives, propellants, and pyrotechnics. HEMRL develops warhead filling for missiles, ammunition propellants, rocket propellants, and insensitive munitions (IM) to reduce accidental detonations. HEMRL also works on thermobaric explosives and multi-mode fuzes. Its products are used across all Indian military munitions from small arms to large missile warheads.

Correct Answer: C. Visakhapatnam

NSTL (Naval Science and Technological Laboratory) is a DRDO lab located at Visakhapatnam (Vizag), Andhra Pradesh. It is India's primary laboratory for underwater weapons and ocean technology. NSTL developed Varunastra (heavyweight torpedo), acoustic sensors for submarines, underwater mines, and anti-torpedo decoys. NSTL also works on undersea surveillance systems and marine propulsion technology. Visakhapatnam is India's Eastern Naval Command headquarters, making NSTL well-positioned to support naval operational requirements. NSTL is classified and plays a crucial role in naval deterrence.

Correct Answer: B. Navratna

HAL (Hindustan Aeronautics Limited) and BEL (Bharat Electronics Limited) are both classified as Navratna PSUs (Public Sector Undertakings), the second-highest category for government companies after Maharatna. Navratna status gives these companies greater operational and financial autonomy. Other Navratna DPSUs include BDL and BEML. MIDHANI holds Miniratna status. The highest category, Maharatna, is typically for very large PSUs like ONGC and SAIL. DRDO itself is not a PSU but a government organisation directly under the Ministry of Defence.

Correct Answer: C. INSAS (Indian Small Arms System)

INSAS (Indian Small Arms System) was developed by DRDO's ARDE (Armament Research and Development Establishment) and manufactured at Ordnance Factories (now Munitions India Limited). The INSAS 5.56 mm assault rifle was the standard infantry weapon of the Indian Army for over two decades (inducted 1996). INSAS has been criticised for performance issues in cold weather (Kargil War). India is now replacing INSAS with a new Assault Rifle — SiG 716i (purchased from Sig Sauer USA) and the domestically developed AK-203 (IndRus joint venture at Amethi, UP). ARDE is also developing a new indigenous assault rifle.

Correct Answer: C. Pune

ARDE (Armament Research and Development Establishment) is located at Pune, Maharashtra. It is DRDO's centre for developing weapons, ammunition, and armaments including guns, rockets, launchers, and small arms. ARDE developed the Pinaka MBRL, Bofor replacement guns (155 mm towed gun Dhanush and ATAGS), INSAS rifle, grenades, and rocket-propelled grenades. ARDE works closely with the Army and ordnance factories for production of its systems. ARDE also develops fire control systems and precision-guided munitions.

Correct Answer: B. Lucknow-Kanpur-Agra-Aligarh-Jhansi-Chitrakoot

The Uttar Pradesh Defence Industrial Corridor was approved in 2018, stretching from Lucknow to Aligarh via nodes at Lucknow, Kanpur, Agra, Aligarh, Jhansi, and Chitrakoot. The corridor aims to attract Rs 50,000 crore in investment and generate employment. Major investors include private companies (Adani Defence, Bharat Forge, L&T, TATA) as well as PSUs (HAL, BEL, DRDO units). The AK-203 assault rifle manufacturing facility at Amethi is part of the UP corridor. The corridor leverages UP's industrial base and connects multiple cities.

Correct Answer: C. Future Indian aircraft including AMCA

GTRE is developing variants of the Kaveri engine for future Indian aircraft. The original Kaveri was meant for Tejas but was delayed. The Kaveri-Dry (without afterburner, 50 kN thrust) is certified and being proposed for the Ghatak UCAV (Stealth unmanned combat aircraft) and CATS Warrior. The full Kaveri with afterburner is being developed for fighter applications. A Kaveri-derived Marine Gas Turbine is also being developed for naval ships. Long-term, Kaveri technology will feed into AMCA's engine (possibly a hybrid with MTU or GE technology).

Correct Answer: C. 5th generation

AMCA (Advanced Medium Combat Aircraft) is planned as a 5th generation stealth fighter, incorporating features like: low radar cross-section (stealth shaping), internal weapons bay, supercruise (supersonic flight without afterburner), advanced AESA radar, electronic warfare suite, and sensor fusion. 5th generation fighters include USA's F-22 Raptor, F-35 Lightning II, Russia's Su-57, and China's J-20. If AMCA enters service by 2035 as planned, India will be the 4th nation to independently develop a 5th generation fighter. The AMCA programme marks India's most ambitious aviation undertaking.