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Omnidirectional autonomous entry guidance based on 3-D analytical glide formulas.

Wenbin Yu¹, Wanchun Chen¹, Zhiguo Jiang¹

¹Beihang University, Beijing 100191, China.

ISA Transactions

|September 24, 2016

Summary

This study presents an autonomous entry guidance law for hypersonic glide vehicles, accurately steering them globally by compensating for Earth

Keywords:

3-D analytical glide formulas Hypersonic glide vehicle Omnidirectional autonomous entry guidance Trajectory damping control technique

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Area of Science:

Aerospace Engineering
Guidance, Navigation, and Control

Background:

Autonomous entry guidance is crucial for hypersonic glide vehicles.
Existing analytical glide formulas neglect Earth's rotation effects.

Purpose of the Study:

Develop an autonomous entry guidance law for hypersonic glide vehicles.
Accurately steer vehicles globally by compensating for Earth's rotation.

Main Methods:

Utilized 3-D analytical glide formulas for longitudinal and crossrange planning.
Implemented two-part compensation strategies for Earth's rotation effects.
Adjusted reference profiles and modulated guidance commands.

Main Results:

Achieved accurate global steering for high Lift to Drag (L/D) hypersonic glide vehicles.
Minimized deviations in Angle of Attack (AOA) and bank angle.
Successfully compensated for Earth's rotational effects on trajectory.

Conclusions:

The developed guidance law enables precise global trajectory control.
Compensation strategies effectively mitigate Earth's rotation impact.
Maintained stable flight parameters like AOA and bank angle.