Crew_Module_Atmospheric_Re-entry_Experiment

Crew Module Atmospheric Re-entry Experiment

Crew Module Atmospheric Re-entry Experiment

Indian experimental space vehicle

The Crew Module Atmospheric Re-entry Experiment (CARE) is an experimental test vehicle for the Indian Space Research Organisation's future ISRO orbital vehicle called Gaganyaan.[1] It was launched successfully on 18 December 2014 from the Second Launch Pad of the Satish Dhawan Space Centre, by a LVM3 designated by ISRO as the LVM 3X CARE mission.[2][3] Total cost of mission was ₹155 crore (equivalent to ₹248 crore or US$31 million in 2023). Cost of launch vehicle and CARE module was ₹140 crore and ₹15 crore.[4]

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Characteristics of the vehicle

The crew module was mounted upside-down inside the payload fairing of the LVM3. CARE was made of aluminium alloy and had a lift-off mass of 3,735 kg. Its diameter was 3100 mm and its height was 2698 mm.[5] The module had an ablative thermal protection. The side panels were covered with Medium Density Ablative (MDA) tiles and the forward heat shield was made of carbon phenolic tiles.[6][7] It was powered by batteries and was equipped with six liquid-propellant (MMH/MON3) 100 N thrusters.[8]

Preliminary tests

A practice run of the recovery of crew module was done on 31 October 2014 with Indian Coast Guard ship ICGS Samudra Pahredar.[9]

Mission description

Recovered CARE module on display at Bangalore Space Expo 2018

CARE was launched on 18 December 2014 at 04:00 UTC. The crew module was separated at the intended height of 126 km and a speed of 5300 m/s. It entered a coast phase during which it performed three axis control manoeuvres in order to ensure zero degree angle of attack at reentry.

The ballistic reentry started from an altitude of about 80 km. At this altitude, the propulsion was shut down. The heat shield experienced temperatures around 1,000 degrees C and the capsule experienced deceleration of up to 13 g.[10]

After the re-entry the vehicle performed a descent and splashdown during which an end-to-end validation of the parachute system was performed, including the demonstration of the apex cover separation and the parachute deployment in cluster configuration. The deployment sequence started when CARE had slowed to a speed of 233 m/s. The crew module carried three stages of parachutes, all of which came in pairs. First, both 2.3-meter diameter pilot parachutes came out, followed by the 6.2-meter drogue parachutes, which cut the capsule's velocity down to 50 m/s. Then both main parachutes were deployed at a height of about 5 km. These parachutes, each 31 meters in diameter, were the largest ever made in India.[11]

CARE splashed down into the Bay of Bengal about 600 km from Port Blair in the Andaman Islands and about 1600 km from the Sriharikota launch site.[12] Immediately afterwards the main parachutes were detached. CARE was recovered by the Indian Coast Guard after tracking its signal beacon. The entire duration of the experiment from launch to splashdown was 20 minutes 43 seconds.[13]

After recovery the module was brought to Chennai on 22 December 2014, from where it will be sent to the Satish Dhawan Space Centre for preliminary processing.[14] The module will then be sent to Vikram Sarabhai Space Centre for further study and analysis.[14]

Telemetry from ISRO

Doordarshan's telecast of the LVM3 LVM3-X ascent and CARE module's ballistic descent showed screen displays of the following telemetry:[15]

More information Time (Seconds), Event ...

Industrial organisation

See also

References

  1. [1]
    "Gaganyan: How to send an Indian into space". 16 August 2018.
  2. [2]
    ISRO All Set to Launch its ‘Mini Orion’ GSLV Mark III Mission on Dec. 18 (Photos) Archived 2014-12-10 at the Wayback Machine
  3. [3]
    Isro successfully test-fires GSLV Mark III carrying unmanned crew module Times of India 18 December 2014
  4. [4]
    PTI (17 December 2014). "ISRO commences countdown for GSLV Mark III launch". @businessline. Retrieved 2020-06-12.
  5. [5]
    R.G, Vinu; Chandran, Kailas Sree; G, Deepak (July 2017). "Flight Analysis of Wedge and Blunt Nose Re-entry Capsules" (PDF). International Journal of Engineering Trends and Technology (IJETT). 49 (3).
  6. [6]
    Isro to test GSLV Mk-III, crew module on December 18
  7. [7]
    CARE - ISRO
  8. [8]
    Development of a 100 N Liquid Bipropellant Thruster for Crew Module Atmospheric Re-entry Experiment (CARE) Mission. International Conference on Aerospace and Mechanical Engineering ICAME ’15 14–16 December 2015. McGraw-Hill Education. December 2015. p. 29. ISBN 9789385965166.
  9. [9]
    "LVM 3 X launch with crew module between Dec 15 & 20". Archived from the original on 2016-03-04. Retrieved 2014-12-10.
  10. [10]
    Unmanned crew module to be tested 10 December 2014 The Hindu
  11. [11]
    "7 Reasons Why the Successful Launch of India's Largest Rocket GSLV Mark III is a Huge Deal". 18 December 2014.
  12. [12]
    First Experimental Flight of India's Next Generation Launch Vehicle GSLV Mk-III Successful - ISRO Press Release - December 18, 2014
  13. [13]
    "India successfully launches its heaviest rocket GSLV-Mk III". 18 December 2014.
  14. [14]
    ISRO Module Heads Home After Sojourn The New Indian Express 22 December 2014
  15. [15]
    "The Launch of GSLV-M-III X from Sriharikota". YouTube. Doordarshan. Retrieved 5 November 2015.
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