UPSC Prelims 2024 Q35: Science & Technology – Defence Technology
- (a) Only one
- (b) Only two
- (c) All three
- (d) None
Answer: (d) None
Explanation
5th Generation Fighter Aircraft — Classification
| Aircraft | Generation | Why |
|---|---|---|
| Rafale (France) | 4.5th generation | Advanced avionics, AESA radar, supercruise capability, but NOT full stealth and NOT sensor fusion at F-35 level. NATO classifies it as 4.5-gen. |
| MiG-29 (Russia) | 4th generation | 1970s-80s design. Twin-engine air superiority fighter. No stealth, no supercruise. Classic 4th-gen alongside F-16, Mirage 2000. |
| Tejas Mk-1 (India) | 4th generation | Light combat aircraft. First flight 2001. Mk-1A adds AESA radar and EW suite (4.5-gen level) but base Mk-1 = 4th gen. |
True 5th-gen fighters:
- F-22 Raptor (USA) — first operational 5th-gen (2005)
- F-35 Lightning II (USA) — multi-role 5th-gen (2015)
- Su-57 Felon (Russia) — Russian 5th-gen (operational 2020)
- J-20 Mighty Dragon (China) — Chinese 5th-gen (2017)
- AMCA (India) — India's future 5th-gen (under development, DRDO+HAL)
5th-gen characteristics (all five required):
1. Full-spectrum stealth (low RCS across radar frequencies)
2. Supercruise (supersonic without afterburner)
3. Sensor fusion (integrated data from all sensors into one display)
4. Advanced avionics (AESA radar, EW suite)
5. Internal weapons bays (no drag from external pylons)
None of Rafale, MiG-29, or Tejas Mk-1 qualifies → Answer: None of the above.
Answer: (d) None.
Why each option is right or wrong
- (a) Incorrect. Rafale is 4.5th generation — advanced but lacks full stealth and internal weapons bays required for 5th-gen classification.
- (b) Incorrect. MiG-29 is a 4th generation fighter from the 1970s-80s Soviet era. No stealth, no supercruise, no sensor fusion.
- (c) Incorrect. Tejas Mk-1 is 4th generation. The upgraded Mk-1A approaches 4.5-gen but the base variant does not meet 5th-gen criteria.
- (d) CORRECT. None of these aircraft — Rafale (4.5-gen), MiG-29 (4th-gen), Tejas Mk-1 (4th-gen) — qualifies as a 5th-generation fighter.
Key point
Rafale = 4.5-gen. MiG-29 = 4th-gen. Tejas Mk-1 = 4th-gen. True 5th-gen = F-22, F-35, Su-57, J-20.
Remember
Rafale = 4.5-gen. MiG-29 = 4th-gen. Tejas Mk-1 = 4th-gen. None is 5th-gen. India's 5th-gen = AMCA (under development).
Common mistakes
- Assuming Rafale is 5th-gen because it is modern and expensive — it lacks full stealth and internal weapons bays.
- Confusing Tejas Mk-1A (approaching 4.5-gen) with base Mk-1 classification.
- Not knowing India's 5th-gen programme is AMCA (Advanced Medium Combat Aircraft), still in development.
Exam tip
5th-gen = stealth + supercruise + sensor fusion + internal bays. Rafale misses full stealth. MiG-29 is Soviet-era 4th-gen. India's 5th-gen = AMCA (future). Currently India operates only 4th/4.5-gen jets.
Sources
- Jane's All the World's Aircraft
- DRDO — AMCA Programme Updates
- Ministry of Defence Annual Report