航天飞机末端区域能量管理段制导技术概述

末端区域能量管理段主要是控制航天飞机的动能和势能．使航天飞机最终达到进场着陆段的初始要求，以保证其最终成功着陆。在最终制导系统引入一个能量基准剖面，通过调整飞行距离、动压或速度制动使航天飞机达到标准的能量状态。将末端区域能量管理段划分为四个飞行段，并对这四个飞行段的基本设计思想、制导技术及过程进行了研究。经过实际的航天飞机飞行验证．证明这种方案具有良好的制导效果。

Summary of Guidance for Space Shuttle Terminal Area Energy Management Phase

The purpose of the terminal area energy management (TAEM) phase is to control the kinetic energy and potential energy states of the vehicle and enables the vehicle to achieve the proper conditions of the approach and landing phase for a successful landing. An energy profile is shaped at the beginning of the TAEM, and the guidance controls the vehicle by flying the profile through adjustment of the flight range, dynamic pressure and speed brake of the vehicle. TAEM phase is further divided into four distinct sub-phases. The design principle and guidance of these four sub-phases are respectively presented. The effect of this guidance is approved to be satisfactory by practical flies.