Notable missions
Flight X
The maiden flight of the LVM3 lifted off from the Second Launch Pad at the Satish Dhawan Space Center on 18 December 2014 at 04:00 UTC. [1] The test had functional boosters, a core stage but carried dummy upper stage whose LOX and LH₂ tanks were filled with LN₂ and GN₂ respectively for simulating weight. It also carried the Crew Module Atmospheric Re-entry Experiment (CARE) that was tested on re-entry. [2]
Just over five minutes into the flight, the rocket ejected CARE at an altitude of 126 kilometres (78 mi), which then descended, controlled by its onboard reaction control system. During the test, CARE's heat shield experienced a peak temperature of around 1,000 °C (1,830 °F). ISRO downlinked launch telemetry during the ballistic coasting phase until the radio black-out to avoid data loss in the event of a failure. At an altitude of around 15 kilometres (9.3 mi), the module's apex cover separated and the parachutes were deployed. CARE splashed down in the Bay of Bengal near the Andaman and Nicobar Islands and was recovered successfully. [3] [4] [5] [6]
Chandrayaan
Following the failure of Phobos-Grunt mission of Roscosmos, it resulted in a complete review of technical aspects connected with the spacecraft, which were also slotted to be used in the proposed Russian lander for Chandrayaan-2. This delayed the lander from Russia and eventually Roscosmos declared its inability to meet up with the revised time of 2015 for its launch on board an uprated GSLV rocket along with an Indian orbiter and rover. ISRO cancelled the Russian agreement and decided to go alone with its project with marginal changes. [7] [8]
On 22 July 2019, the LVM3 M1 (GSLV Mk.III M1) rocket lifted off with 3850 kg Chandrayaan-2 Orbiter-Lander composite and successfully injected it into a parking orbit of 169.7 x 45,475 km. This marked the first operational flight of LVM3 after two developmental flights. [9] The apogee of the earth parking orbit is about 6,000 km more than originally envisaged and thereby eliminated one of the seven earth-bound orbit raising manoeuvres. It was attributed to a 15 percentage increase in rocket performance. [10] [11] On 14 July 2023, the LVM3 M4 rocket successfully injected the 3900 kg Chandrayaan-3 composite to a parking orbit of 170 x 36,500 km. [12] On 15 November 2023, the Cryogenic Upper Stage (C25) of the LVM3 M4 (NORAD ID: 57321) made an uncontrolled re-entry into the Earth's atmosphere around 9:12 UTC. The impact point is predicted over the North Pacific Ocean and the final ground track did not pass over India. [13] [14] [15]
OneWeb
On 21 March 2022, OneWeb announced that it had signed a launch agreement with United States launch provider SpaceX to launch the remaining 1st generation satellites on Falcon 9 rockets, with the first launch expected no earlier than summer 2022. [16] [17] On 20 April 2022 OneWeb announced a similar deal with NewSpace India Limited, the commercial arm of the Indian Space Research Organisation. [18] OneWeb satellites were deployed by LVM3 both on 22 October 2022 and 26 March 2023 [19] using a lightly modified version of the satellite dispenser previously used on Soyuz. [20] [21]
The first batch of 36 OneWeb Gen-1 satellites weighing a total of 5796 kg was launched onboard LVM3 M2 rocket codenamed OneWeb India-1 Mission on 22 October 2022 and the satellites were injected to a low earth orbit of 601 km altitude and 87.4° inclination on a sequential basis. This constituted the first commercial mission and the first multi-satellite mission to low earth orbit of the rocket, marking its entry to global commercial launch service market. The separation of satellites involved a unique maneuver of the cryogenic stage to undergo several re-orientation and velocity additions covering 9 phases spanning 75 minutes. [22] [23] On 26 March 2023, codenamed OneWeb India-2 Mission, the second batch of 36 satellites was launched onboard LVM3 M3 and injected to an altitude of 450 km with same inclination. The launch featured a white cryogenic stage which takes into account environmental-friendly manufacturing processes, better insulation properties and the use of lightweight materials. [24] [25]
