✦ LIBER ✦
172 The closed -form solution and its approximatiion of the optimal guidance law: M.J. Tahk, B.K. Sun, I.S. Hwang, H.J. Cho, T.L. Song, pp797–800
- Book ID
- 103987843
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 134 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0967-0661
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✦ Synopsis
This paper treats the atmospheric orbit transfer of a spacecraft. The main problem developed is the atmospheric flight. The guidance law is obtained by using two classical non-linear guidance methods: trajectory tracking, and the sliding-mode control technique. A model reduction by singular perturbations is also considered. The point is that the system is required to track a pre-defined reference trajectory, such that the vehicle flies from given initial conditions to defined exit conditions. To test the perfomumce of the guidance law, a robustness study is done for atmospheric density variations.