ISRO
DraftIndia’s national space agency, established in 1969 under the vision of Vikram Sarabhai, who argued that a developing country’s space programme should be justified by its applications rather than by prestige.
- Founded
- 1969, succeeding INCOSPAR
- Orientation
- Applications first: communications, remote sensing, navigation, disaster management
- Launch sites
- Satish Dhawan Space Centre, Sriharikota, at 13.7 degrees north
- Commercial arm
- NewSpace India Limited, established 2019
Launch vehicles
| Vehicle | Capability | Role |
|---|---|---|
| SSLV | ~500 kg to LEO | Small satellite launch, rapid turnaround |
| PSLV | ~3.8 t to LEO, ~1.7 t to SSO | The workhorse; long record of commercial rideshare |
| GSLV Mk II | ~2.5 t to GTO | Cryogenic upper stage, indigenous development |
| LVM3 | ~8 t to LEO, ~4 t to GTO | Heaviest; Chandrayaan-3 and the Gaganyaan crewed programme |
PSLV built the agency’s international reputation. Its reliability record and willingness to fly rideshare payloads made it a default choice for small satellite operators for two decades, including a single mission that deployed 104 satellites.
Developing the cryogenic upper stage for GSLV was a long and difficult programme, undertaken after technology transfer arrangements fell through. It is frequently cited domestically as evidence for indigenous development, and it took considerably longer than planned.
Missions
| Mission | Year | Result |
|---|---|---|
| Chandrayaan-1 | 2008 | Lunar orbiter; its Moon Mineralogy Mapper contributed to the detection of surface water |
| Mars Orbiter Mission | 2013 | Mars orbiter on the first attempt, at a widely publicised low cost |
| Chandrayaan-2 | 2019 | Orbiter successful; lander lost during descent |
| Chandrayaan-3 | 2023 | Successful soft landing near the lunar south pole |
| Aditya-L1 | 2023 | Solar observatory at Sun-Earth |
| Gaganyaan | In development | Indigenous crewed spaceflight |
Chandrayaan-3’s success following Chandrayaan-2’s failure is the more instructive pair. The response was to strengthen the lander’s margins, widen the acceptable landing area, and improve the guidance handling of off-nominal conditions, which is a conventional and effective engineering response to a specific failure.
The cost question
ISRO’s mission costs are frequently cited as remarkably low, and the comparison is usually made carelessly. The Mars Orbiter Mission’s often-quoted cost is genuinely low, and understanding why requires separating several factors.
| Factor | Contribution |
|---|---|
| Labour cost | Engineering salaries are substantially lower than in the US or Europe |
| Accounting treatment | Infrastructure and facilities are frequently not charged to individual missions |
| Scope discipline | Missions are deliberately narrow, with fewer instruments and objectives |
| Design conservatism | Heritage hardware reused rather than developed anew |
| Acceptance of risk | Lower redundancy and less exhaustive qualification on some missions |
The transferable lessons are scope discipline and heritage reuse. A mission with three instruments and one clear objective costs a fraction of one with twelve instruments and a broad mandate, and that choice is available to any agency. The labour and accounting factors are not transferable and account for a substantial part of the headline difference.
Applications orientation
The programme’s founding rationale was that space technology should serve development, and the emphasis remains visible.
| Application | System |
|---|---|
| Communications | INSAT and GSAT series |
| Remote sensing | IRS and Cartosat series; among the largest civilian remote sensing fleets |
| Navigation | NavIC, a regional system covering India and its surroundings |
| Disaster management | Cyclone tracking, flood mapping, agricultural monitoring |
| Education and telemedicine | Satellite links to remote areas |
NavIC is described in GNSS and positioning. It is regional rather than global, using geostationary and inclined geosynchronous satellites so that coverage over India is continuous from satellites high in the sky.
Commercial and policy
NewSpace India Limited was established in 2019 as the commercial arm, handling launch services, technology transfer and satellite manufacturing contracts. IN-SPACe was created as a regulator and facilitator to authorise private space activity.
The 2020 policy reforms opened space activity to private companies, and a domestic startup sector has grown since, including private launch vehicle developers. The direction is toward ISRO acting less as the sole provider and more as an anchor customer and technology source, which parallels the shift described in Space agencies.
References
- ISRO annual reports and mission documentation.
- Indian Space Policy 2023, and the IN-SPACe regulatory framework.
- Rao, P. V. M. and others on Indian space programme history and economics.
- Chandrayaan-3 and Mars Orbiter Mission published results in Current Science and Planetary and Space Science.