Patched Corridor: A Novel Lateral Logic for Skip Entry Guidance

2014 ◽  
Vol 37 (5) ◽  
pp. 1651-1658 ◽  
Author(s):  
Zong-Fu Luo ◽  
Hong-Bo Zhang ◽  
Guo-Jian Tang
Keyword(s):  
Entry Guidance ◽  
Skip Entry

Skip entry guidance using numerical predictor–corrector and patched corridor

2015 ◽  
Vol 117 ◽  
pp. 8-18 ◽  
Author(s):  
Zong-Fu Luo ◽  
Hong-Bo Zhang ◽  
Guo-Jian Tang
Keyword(s):  
Entry Guidance ◽  
Skip Entry ◽  
Predictor Corrector

scholarly journals Accurate predictor–corrector skip entry guidance for low lift-to-drag ratio spacecraft

2018 ◽  
Author(s):  
Y. Enmi ◽  
W. Qian ◽  
K. He ◽  
D. Di
Keyword(s):  
Trajectory Planning ◽  
Closed Loop ◽  
Initial Value ◽  
Bank Angle ◽  
Air Density ◽  
Entry Guidance ◽  
Skip Entry ◽  
Predictor Corrector ◽  
Drag Ratio ◽  
Lift To Drag Ratio

This paper develops numerical predictor–corrector skip en try guidance for vehicles with low lift-to-drag L/D ratio during the skip entry phase of a Moon return mission. The guidance method is composed of two parts: trajectory planning before entry and closed-loop gu idance during skip entry. The result of trajectory planning before entry is able to present an initial value for predictor–corrector algorithm in closed-loop guidance for fast convergence. The magnitude of bank angle, which is parameterized as a linear function of the range-to-go, is modulated to satisfy the downrange requirements. The sign of the bank ang le is determined by the bank-reversal logic. The predictor-corrector algorithm repeatedly applied onboard in each guidance cycle to realize closed-loop guidance in the skip entry phase. The effectivity of the proposed guidance is validated by simulations in nominal conditions, including skip entry, loft entry, and direct entry, as well as simulations in dispersion conditions considering the combination disturbance of the entry interface, the aerodynamic coefficients, the air density, and the mass of the vehicle.

Blended skip entry guidance for low-lifting lunar return vehicles

2014 ◽  
Vol 30 (6) ◽  
pp. 973-982 ◽  
Author(s):  
Zong-Fu Luo ◽  
Hong-Bo Zhang ◽  
Guo-Jian Tang
Keyword(s):  
Entry Guidance ◽  
Skip Entry

Lunar landing and long-range earth re-entry guidance by application of perturbation theory

1964 ◽  
Vol 1 (2) ◽  
pp. 191-196 ◽  
Author(s):  
HENRY C. LESSING ◽  
PHILLIPS J. TUNNELL ◽  
ROBERT E. COATE
Keyword(s):  
Perturbation Theory ◽  
Long Range ◽  
Lunar Landing ◽  
Entry Guidance
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