Space: Science & Technology / 2021 / Article / Tab 2

Research Article

Design and Realization of Recovery System of Chang’e-5 Reentry Spacecraft

Table 2

Flight results of the main performance of the recovery system.

ItemPerformance requirementsFlight validation results

Landing speedWhen the total landing weight of the reentry spacecraft is 310 kg, in the landing area with an altitude of 1 km, the vertical landing speed of the reentry spacecraft with the main parachute is not more than 13 m/sIn flight tests, when the reentry spacecraft is 310 kg, in the landing area with an altitude of 1 km, the vertical landing speed of the reentry spacecraft with the main parachute is not greater than 11.8 m/s
The altitude of opening parachuteThe altitude of opening parachute is not less than 10 km (above sea level)The altitude of opening parachute in the flight test is not less than 11 km (above sea level)
The dynamic pressure of opening parachuteThe parachute can be opened normally in the range of 1.8 Pa~3.8 kPaThe parachute can be opened normally in the range of 30.9 Pa~9.4 kPa (no data in the flight missions. This is the comprehensive results of airdrop tests and high tower drop tests which show the performance is better than flight requirement.)
The overload of opening parachuteThe overload of opening parachute should be no more than 7 gThe overload of opening parachute is no more than 4.4 g in flight tests
System weightThe total mass is no more than 26 kg21.6 kg (measured data of products)
Parachute volumeParachute volume is no more than 23 L15.2 L (measured data of products)
Power consumptionPower consumption is no more than 15 WPower consumption is no more than 5.6 W (measured data of products)