Crew Module Atmospheric Re-entry Experiment

CARE

Recovery of the CARE module

Mission type| Technology
Operator| ISRO
Mission duration| 19 minutes
Range| 1,600 kilometres (990 mi)
Apogee| 126 kilometres (78 mi)
Spacecraft properties
Spacecraft type| Space capsule (Boilerplate)
Manufacturer| ISRO
Launch mass| 3,735 kilograms (8,234 lb)
Dimensions| 3.1 × 2.7 m (10.2 × 8.9 ft)
Start of mission
Launch date| 18 December 2014, 04:00 (2014-12-18UTC04Z) UTC
Rocket| LVM3-X
Launch site| Satish Dhawan SLP
Contractor| ISRO
End of mission
Landing date| 18 December 2014, 04:15 (2014-12-18UTC04:16Z) UTC
Landing site| Bay of Bengal

CARE mission Badge

IHSP

ISRO PAT ->

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 LVM3 X CARE mission.[2][3] Total cost of mission was ₹155 crore (equivalent to ₹199 crore or US$28 million in 2023). Cost of launch vehicle and CARE module was ₹140 crore and ₹15 crore.[4]

## Contents

* 1 Characteristics of the vehicle
* 2 Preliminary tests
* 3 Mission description
* 3.1 Telemetry from ISRO
* 4 Industrial organisation
* 5 See also
* 6 References

## Characteristics of the vehicle

The crew module was mounted upside-down inside the payload fairing of the LVM3. CARE was made of aluminium alloy with carbon-fiber reinforced polymer (CFRP) panels 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]

The deceleration system consists of two independent chains of parachutes: a primary parachute (31 meters in diameter), a drop parachute (6.2 meters in diameter), and a pilot parachute (2.3 meters in diameter).[9]

## 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.[10]

## 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.[11]

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.[12]

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.[13] 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.[14]

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.[15] The module will then be sent to the Vikram Sarabhai Space Centre for further study and analysis.[15]

### 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:[16]

Time (Seconds) | Event | Observations

|
|

0.1 | S200 ignition | Ground-lit ignition of 2 strap-on Solid Rocket Boosters
120 | L110 ignition | Air-lit ignition of L110 core which contains 2 liquid fueled Vikas rocket engines
153.5 | S200 separation | Ejection of 2 spent solid strap-on boosters
163.4 | CLG initiated | CLG = Closed-Loop Guidance
237.2 | Heat-shield separation | Nominal
324.6 | L110 shut-off | Nominal: Relative Velocity 4.92 km/s, Range 565.6 km, Altitude 125.6 km, Azimuth 121.1 degrees
325.7 | L110 separation | Nominal: Relative Velocity 4.95 km/s, Range 570.5 km, Altitude 125.4 km, Azimuth 121.1 degrees
330.8 | CARE module separation | Nominal: Relative Velocity 4.96 km/s, Range 599.5 km, Altitude 125.1 km, Azimuth 121.1 degrees
341.0 | CARE module CLG started | Nominal: Relative Velocity 4.96 km/s, Range 633.1 km, Altitude 125.2 km, Azimuth 121.1 degrees
385.5 | CARE module in ballistic descent | Nominal: Relative Velocity 4.93 km/s, Range 858.8 km, Altitude 116.6 km, Azimuth 121.0 degrees
399.5 | CARE module in ballistic descent | Nominal: Relative Velocity 4.94 km/s, Range 926.6 km, Altitude 111.8 km, Azimuth 121.0 degrees
419.5 | CARE module in ballistic descent | Nominal: Relative Velocity 4.96 km/s, Range 1023.5 km, Altitude 103.1 km, Azimuth 121.0 degrees
440.5 | CARE module in ballistic descent | Nominal: Relative Velocity 4.98 km/s, Range 1125.6 km, Altitude 91.8 km, Azimuth 121.0 degrees
460.6 | CARE module reentry | Nominal
468.5 | CARE module in ballistic descent | Nominal: Relative Velocity 5.00 km/s, Range 1262.4 km, Altitude 73.3 km, Azimuth 121.0 degrees
573.0 | CARE module in descent | Nominal: Relative Velocity 0.244 km/s, Range 1534.5 km, Altitude 18.1 km
584.0 | CARE module 15.5 km altitude | Nominal: Relative Velocity 0.210 km/s, Range 1535.6 km, Altitude 15.9 km
584.3 | APEX cover separation | Nominal
584.5 | CARE module in descent | Nominal: Relative Velocity 0.209 km/s, Range 1535.7 km, Altitude 15.8 km
589.4 | Pilot Chute deployed | Nominal
596 | CARE module in descent | Nominal: Relative Velocity 0.086 km/s, Range 1536.0 km, Altitude 14.2 km
740.6 | CARE module 5 km altitude | Nominal
741.4 | Main Chute deployed | CARE module's rate of descent increased abnormally prior to splash-down
751.0 | CARE module in descent | Displayed telemetry: Relative Velocity 0.431 km/s, Range 1508.2 km, Altitude 0.9 km
755.0 | CARE module in descent | Displayed telemetry: Relative Velocity 0.443 km/s, Range 1506.6 km, Altitude 0.6 km
760.0 | CARE module in descent | Displayed telemetry: Relative Velocity 0.459 km/s, Range 1504.7 km, Altitude 0.1 km
761.0 | CARE module in descent | Displayed telemetry: Relative Velocity 0.462 km/s, Range 1504.3 km, Altitude 0.0 km
779.0 | CARE module in descent | Displayed telemetry: Relative Velocity 0.518 km/s, Range 1496.7 km, Altitude -1.7 km
833.0 | CARE module in descent | Displayed telemetry: Relative Velocity 0.689 km/s, Range 1468.7 km, Altitude -7.8 km
940.0 | CARE module in descent | Final display of telemetry: Relative Velocity 1.014 km/s, Range 1406.3 km, Altitude -21.0 km

## Industrial organisation

* Hindustan Aeronautics Limited
* Aerial Delivery Research and Development Establishment, Agra \- parachute
* Valeth Hightech Composites

## See also

* Space Capsule Recovery Experiment by ISRO, flown in 2007
* Orbital Re-entry EXperiment by Japan, flown in 1994
* Atmospheric Reentry Demonstrator (A suborbital reentry test vehicle built by Aérospatiale of France for the European Space Agency and flown on the third Ariane 5 flight on October 21, 1998)
* Space Rider, Europe's future robotic spaceplane
* SpaceX Starship, reusable crewed spacecraft to be flown in 2020

## References

1. ↑ "Gaganyan: How to send an Indian into space". 16 August 2018. https://indianexpress.com/article/explained/simply-put-how-to-send-an-indian-into-space-isro-maned-mission-5308964/.
2. ↑ ISRO All Set to Launch its ‘Mini Orion’ GSLV Mark III Mission on Dec. 18 (Photos)
3. ↑ Isro successfully test-fires GSLV Mark III carrying unmanned crew module Times of India 18 December 2014
4. ↑ PTI (17 December 2014). "ISRO commences countdown for GSLV Mark III launch" (in en). https://www.thehindubusinessline.com/news/science/isro-commences-countdown-for-gslv-mark-iii-launch/article20932509.ece1.
5. ↑ R.G, Vinu; Chandran, Kailas Sree; G, Deepak (July 2017). "Flight Analysis of Wedge and Blunt Nose Re-entry Capsules". International Journal of Engineering Trends and Technology 49 (3). http://ijettjournal.org/2017/volume-49/number-3/IJETT-V49P229.pdf.
6. ↑ Isro to test GSLV Mk-III, crew module on December 18
7. ↑ CARE \- ISRO
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. pp. 29. ISBN 9789385965166.
9. ↑ "LVM3-X/CARE Mission". ISRO. https://www.isro.gov.in/media_isro/pdf/LVM3-brochure.pdf.
10. ↑ "LVM 3 X launch with crew module between Dec 15 & 20". http://www.timesnow.tv/LVM-3-X-launch-with-crew-module-between-Dec-15--20/articleshow/4469892.cms.
11. ↑ Unmanned crew module to be tested 10 December 2014 The Hindu
12. ↑ "7 Reasons Why the Successful Launch of India's Largest Rocket GSLV Mark III is a Huge Deal". 18 December 2014. http://www.indiatimes.com/news/india/7-reasons-why-the-successful-launch-of-india’s-largest-rocket-gslv-mark-iii-is-a-huge-deal-228975.html.
13. ↑ First Experimental Flight of India's Next Generation Launch Vehicle GSLV Mk-III Successful  \- ISRO Press Release - December 18, 2014
14. ↑ "India successfully launches its heaviest rocket GSLV-Mk III". 18 December 2014. http://www.ibtimes.co.uk/india-successfully-launches-heaviest-rocket-gslv-mk-iii-1480025.
15. ↑ 15.0 15.1 ISRO Module Heads Home After Sojourn The New Indian Express 22 December 2014
16. ↑ "The Launch of GSLV-M-III X from Sriharikota". Doordarshan. 17 December 2014. https://www.youtube.com/watch?v=rBIcP7V8MKo.

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