scholarly journals Powered-descent landing GNC system design and flight results for Tianwen-1 mission

Astrodynamics ◽  
2022 ◽  
Vol 6 (1) ◽  
pp. 3-16
Author(s):  
Xiangyu Huang ◽  
Chao Xu ◽  
Jinchang Hu ◽  
Maodeng Li ◽  
Minwen Guo ◽  
...  
Keyword(s):  
Control System ◽  
System Design ◽  
Large Scale ◽  
Autonomous Landing ◽  
Hazard Avoidance ◽  
Navigation And Control ◽  
Powered Descent ◽  
And Control

AbstractThe powered-descent landing (PDL) phase of the Tianwen-1 mission began with composite backshell—parachute (CBP) separation and ended with landing-rover touchdown. The main tasks of this phase were to reduce the velocity of the lander, perform the avoidance maneuver, and guarantee a soft touchdown. The PDL phase overcame many challenges: performing the divert maneuver to avoid collision with the CBP while simultaneously avoiding large-scale hazards; slowing the descent from approximately 95 to 0 m/s; performing the precise hazard-avoidance maneuver; and placing the lander gently and safely on the surface of Mars. The architecture and algorithms of the guidance, navigation, and control system for the PDL phase were designed; its execution resulted in Tianwen-1’s successful touchdown in the morning of 15 May 2021. Consequently, the Tianwen-1 mission achieved a historic autonomous landing with simultaneous hazard and CBP avoidance.

Mars Science Laboratory Flyaway Guidance, Navigation, and Control System Design

2014 ◽  
Vol 51 (4) ◽  
pp. 1227-1236 ◽  
Author(s):  
Behçet Açıkmeşe ◽  
Steven W. Sell ◽  
A. Miguel San Martin ◽  
Jeffrey J. Biesiadecki
Keyword(s):  
Control System ◽  
System Design ◽  
Control System Design ◽  
Science Laboratory ◽  
Mars Science Laboratory ◽  
Navigation And Control ◽  
And Control

scholarly journals Entry vehicle control system design for the Tianwen-1 mission

Astrodynamics ◽  
2022 ◽  
Vol 6 (1) ◽  
pp. 27-37 ◽  
Author(s):  
Jinchang Hu ◽  
Xiangyu Huang ◽  
Maodeng Li ◽  
Minwen Guo ◽  
Chao Xu ◽  
...  
Keyword(s):  
Control System ◽  
System Design ◽  
Attitude Control ◽  
Vehicle Control ◽  
Control System Design ◽  
Control Phase ◽  
Navigation And Control ◽  
Lift Control ◽  
Key Aspects ◽  
And Control

AbstractThe entry vehicle for the Tianwen-1 mission successfully landed on the surface of Mars at 7:18 AM BJT on May 15, 2021. This successful landing made China the first country to orbit, land, and release a rover in their first attempt at the Mars exploration. The guidance, navigation, and control (GNC) system plays a crucial role in the entry, descent, and landing (EDL) phases. This study focused on the attitude control component of the GNC system design. The EDL phase can be divided into several sub-phases, namely the angle of attack control phase, lift control phase, parachute descent phase, and powered descent phase. Each sub-phase has unique attitude control requirements and challenges. This paper introduces the key aspects of designing attitude controllers for each phase. Furthermore, flight results are presented and analyzed.

Guidance, Navigation and Control System Design for a Tri-Propeller VTOL UAV

2007 ◽  
Author(s):  
Joseph Althaus ◽  
Yong Liu ◽  
Rui Huang ◽  
Nathan Daniher ◽  
Christopher Engel ◽  
...  
Keyword(s):  
Control System ◽  
System Design ◽  
Control System Design ◽  
Vtol Uav ◽  
Navigation And Control ◽  
And Control

Autonomous Large Parafoil Guidance, Navigation, and Control System Design Status

2007 ◽  
Author(s):  
David Carter ◽  
Sean George ◽  
Philip Hattis ◽  
Marc W. McConley ◽  
Scott Rasmussen ◽  
...  
Keyword(s):  
Control System ◽  
System Design ◽  
Control System Design ◽  
Navigation And Control ◽  
And Control
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