PSLV-C6
PSLV-C6 was the sixth operational launch and overall ninth mission of the PSLV program. This launch was also the fifty-fourth launch by Indian Space Research Organisation since its first mission on 1 January 1962. The vehicle carried and injected India's two satellites; Cartosat-1 and HAMSAT into the Sun-synchronous orbit. PSLV-C6 was launched at 04:44 hours Coordinated Universal Time on 5 May 2005 from the second launch pad of the Satish Dhawan Space Centre.
Mission highlights
- Seventh operational launch of the PSLV program.
- Overall ninth mission of the PSLV program.
- Overall fifty-fourth launch by Indian Space Research Organisation.
- First flight to be launched from the second launch pad of Satish Dhawan Space Centre.
- Carried and injected two satellites built by ISRO.
Mission parameters
- Mass:
- * Total liftoff weight:
- * Payload weight:
- Overall height:
- Propellant:
- * First stage: Solid HTPB based
- * Second stage: Liquid UH 25 +
- * Third stage: Solid HTPB based
- * Fourth stage: Liquid MMH + MON
- Engine:
- * First stage: Core + 6 strap-on PSOM
- * Second stage: Vikas
- * Third stage: PS 3
- * Fourth stage: PS 4
- Thrust:
- * First stage: 4,762 + 645 x 6 kN
- * Second stage: 800 kN
- * Third stage: 246 kN
- * Fourth stage: 7.3 x 2 kN
- Altitude:
- Maximum velocity:
- Duration: 1,120 seconds
Payload
| Country | Name | Nos | Mass | Type | Objective |
 India | IRS-P5 | 1 | 1,560 kg | Satellite | Remote sensing satellite |
| India | HAMSAT | 1 | 42.5 kg | Microsatellite | Amateur radio satellite |
Launch & planned flight profile
PSLV-C6 was launched at 04:44 hours Coordinated Universal Time on 5 May 2005 from the second launch pad of the Satish Dhawan Space Centre. The mission was planned with pre-flight prediction of covering overall distance of. Following was the flight profile.| Stage | Time | Altitude | Velocity | Event | Remarks |
| First stage | T+0 | 0.025 | 452 | Ignition of PS 1 | Lift off |
| First stage | T+1.19 | 0.026 | 452 | Ignition of 4 ground-lit PSOM | |
| First stage | T+25 | 2.463 | 551 | Ignition of 2 air-lit PSOM | |
| First stage | T+68 | 23.748 | 1,179 | Separation of 4 ground-lit PSOM | |
| First stage | T+90 | 42.768 | 1,659 | Separation of 2 air-lit PSOM | |
| First stage | T+112.03 | 67.411 | 1,995 | Separation of PS 1 | |
| Second stage | T+112.23 | 67.635 | 1,994 | Ignition of PS 2 | |
| Second stage | T+156.03 | 115.244 | 2,314 | Separation of heat shield | |
| Second stage | T+263.38 | 233.873 | 4,087 | Separation of PS 2 | |
| Third stage | T+264.58 | 235.304 | 4,083 | Ignition of HPS 3 | |
| Third stage | T+517.52 | 498.974 | 5,865 | Separation of HPS 3 | |
| Fourth stage | T+531.50 | 509.092 | 5,851 | Ignition of PS 4 | |
| Fourth stage | T+1,043.62 | 627.153 | 7,542 | Cut-off of PS 4 | |
| Fourth stage | T+1,080.62 | 627.801 | 7,546 | Cartosat-1 separation | |
| Fourth stage | T+1,120.62 | 628.535 | 7,546 | HAMSAT separation | Mission complete |