Anomaly in PSLV detected and resolved: Jitendra

UPSC Study Note: PSLV Anomaly (PSLV-C62/EOS-N1) — Detection & Resolution

1. At a Glance

• PSLV (Polar Satellite Launch Vehicle) is ISRO's workhorse four-stage rocket alternating solid (S) and liquid (L) propulsion stages (S–L–S–L). [S1]
• The PSLV-C62 / EOS-N1 mission (launched January 2026) experienced an in-flight anomaly, becoming one of the few PSLV failures in a largely successful programme history. [S2]
• A National Level Expert Committee was constituted by ISRO to determine the root cause and recommend corrective measures before the next flight. [S3]
• Examined by Dr. Jitendra Singh (Minister of State, PMO & Department of Space) in Parliament — relevant to GS-III (Space Technology) and GS-II (Governance/Parliamentary accountability). [S3]

2. Why in the News

• PSLV-C62 / EOS-N1 was launched in January 2026; an anomaly was detected in the PSLV vehicle during the mission, resulting in mission deviation from intended objectives. [S2]
• Dr. Jitendra Singh (MoS, PM's Office / Department of Space) disclosed details in a Parliamentary Question response (PIB, February 2026), confirming the anomaly and remedial steps. [S3]
• Triggered fresh debate on ISRO's failure analysis mechanism, return-to-flight protocols, and accountability in India's space programme. [S3]

3. Background & Evolution

• Predecessors: SLV-3 (1979–83) and ASLV (1987–94) preceded PSLV; both had mixed records.
• PSLV variants: Standard (4 strap-on boosters), PSLV-CA (Core Alone, no strap-ons), PSLV-XL (6 enlarged strap-ons), PSLV-DL/QL (2/4 strap-ons). [S1]

4. Core Static Facts

5. Multi-Dimensional Analysis

Scientific / Technological

• PSLV's four-stage alternating propulsion (solid+liquid) makes it reliable for SSO/GTO missions but complex to diagnose mid-flight anomalies; any single-stage deviation cascades to mission failure. [S1]
• EOS series (Earth Observation Satellites) are critical for agriculture monitoring, disaster management, and cartography — PSLV-C62's anomaly delays these operational capabilities. [S2]
• ISRO's failure analysis protocol mirrors NASA's CAIB model: an independent National Level Expert Committee reviews telemetry data, identifies root cause (propulsion, avionics, structural, or software), and mandates corrective action before return-to-flight. [S3]

Geopolitical / Strategic

• India's commercial space market aspirations (via IN-SPACe and NSIL) are directly impacted — satellite launch contracts with foreign clients depend on PSLV reliability.
• Competitor context: SpaceX Falcon 9, Arianespace, and China's Long March 2D compete in the same SSO launch market. Any PSLV grounding creates market vulnerability.
• India's commitments under bilateral space cooperation MoUs (e.g., with France-CNES, NASA, JAXA) may face delays. [S2]

Governance / Administrative

• Department of Space reports directly to the Prime Minister (not a line ministry), giving the PMO direct oversight — hence Jitendra Singh's parliamentary response. [S3]
• IN-SPACe (Indian National Space Promotion and Authorisation Centre, est. 2020) and NSIL (NewSpace India Ltd.) are downstream stakeholders; a PSLV stand-down affects their launch manifest. [S3]
• The Space Activities Act 2023 mandates operator licensing and liability frameworks — a domestic anomaly tests regulatory accountability for the first time. [S1]

Historical

• PSLV has had only 2 failures in its history (PSLV-D1 in 1993; PSLV-C39 in 2017 — heat shield failure); this makes PSLV-C62 the third anomaly, rare in ~60 missions. [S1]
• India's reliability record (~95%+ success rate) is a key selling point for NSIL commercial launches; PSLV-C62 anomaly is reputationally significant. [S2]

6. Recent Developments (Last 12–18 Months)

• January 2026: PSLV-C62 / EOS-N1 launched from SDSC Sriharikota; anomaly detected in PSLV vehicle during flight. [S2]
• February 2026 (approx.): Dr. Jitendra Singh informs Parliament via Q&A; confirms National Level Expert Committee constituted; PSLV fleet grounded pending review; return-to-flight conditional on corrective actions. [S3]
• Ongoing: Expert Committee conducting telemetry analysis; ISRO has not yet announced a return-to-flight date (as of June 2026). [S3]
• Parallel programme: SSLV (Small Satellite Launch Vehicle) development and launches continue; parliamentary Q&A covered both PSLV and SSLV status simultaneously. [S3]

7. Prelims Hooks

1. PSLV stands for Polar Satellite Launch Vehicle — operated by ISRO under the Department of Space. [S1]
2. PSLV has 4 stages: alternating solid (PS1, PS3) and liquid (PS2-Vikas, PS4) propulsion. [S1]
3. PSLV's primary launch site is Satish Dhawan Space Centre, Sriharikota (Andhra Pradesh). [S1]
4. PSLV-C37 (February 2017) set a world record by launching 104 satellites in a single mission. [S1]
5. PSLV-C62 / EOS-N1 is the mission that suffered an anomaly in January 2026. [S2]
6. A National Level Expert Committee — not a parliamentary committee — was constituted to review the PSLV anomaly. [S3]
7. The anomaly disclosure was made in Parliament by Dr. Jitendra Singh, MoS for the Prime Minister's Office (which oversees the Department of Space). [S3]
8. India's first dedicated space law is the Space Activities Act, 2023. [S1]
9. IN-SPACe (Indian National Space Promotion and Authorisation Centre) was established in 2020 to regulate private space actors. [S3]
10. NSIL (NewSpace India Ltd.) is ISRO's commercial arm responsible for marketing PSLV launch services. [S3]
11. PSLV has a payload capacity of ~1,750 kg to SSO in its XL variant. [S1]
12. EOS stands for Earth Observation Satellite — the series supported by PSLV for agriculture, disaster management, and cartography. [S2]
13. Department of Space reports directly to the Prime Minister of India (not a line ministry like MoST). [S3]
14. PSLV variants: Standard, CA (Core Alone), XL, DL, QL — differing in number of strap-on boosters. [S1]

8. Mains Relevance

Plausible Mains Question Stems: 1. "Examine the significance of PSLV's reliability to India's commercial space ambitions and the implications of the PSLV-C62 anomaly for NSIL's launch manifest." (GS-III, 15 marks) 2. "Discuss the institutional mechanisms ISRO employs for failure analysis and return-to-flight certification. How does India's Space Activities Act 2023 strengthen accountability?" (GS-II/III, 15 marks) 3. "The Department of Space reports directly to the Prime Minister rather than a line ministry. Critically analyse the governance implications of this structure." (GS-II, 10 marks)

9. Related Topics to Study Next

10. Common Errors / Trap Areas

1. Department of Space ≠ Ministry of Science & Technology: DoS reports to the PM, not MoST. Mixing these is a classic trap. [S3]
2. PSLV-C62 is NOT the first PSLV failure: PSLV-D1 (1993) and PSLV-C39 (2017) had earlier failures. C62 is the third anomaly, not the first. [S1]
3. "Jitendra Singh" confusion: He holds multiple portfolios (MoS PMO, MoS Personnel, MoS DoNER, MoS Science & Technology). In this context he speaks as MoS PMO/Department of Space, not as MoS Science & Technology. [S3]
4. Expert Committee ≠ Parliamentary Committee: The body constituted is a technical/scientific National Level Expert Committee, not a Parliamentary Standing Committee or PAC. [S3]
5. EOS-N1 ≠ EOS-06: These are distinct satellites. EOS-06 was launched on PSLV-C54 (2022); EOS-N1 is the PSLV-C62 payload (2026). Do not conflate them. [S2]

11. Sources

• [S1] PSLV — Polar Satellite Launch Vehicle (Programme Page) — https://www.isro.gov.in/PSLV_CON.html — (Tier 1: isro.gov.in)
• [S2] PSLV-C62 / EOS-N1 Mission — https://www.isro.gov.in/Mission_PSLV_C62.html — (Tier 1: isro.gov.in)
• [S3] Parliamentary Question: PSLV and SSLV Programmes (PIB, PRID 2247712) — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2247712&reg=3&lang=2 — (Tier 1: pib.gov.in)