Orbital Mechanics
本课程是航空航天工程专业航天方向的核心专业课，讲授航天器轨道运动的基本理论与工程计算方法。内容包括开普勒定律与二体问题、轨道要素与轨道几何、轨道机动与轨道转移、霍曼转移与双椭圆转移、轨道交会与对接基础、轨道摄动简介、星际轨道初步。课程注重理论与工程应用结合，使学生掌握航天器轨道设计与轨道计算的基本能力。
This core course for the astronautics track of aerospace engineering teaches fundamental theories and engineering computational methods of spacecraft orbital motion. Topics include Kepler's laws and the two-body problem, orbital elements and orbital geometry, orbital maneuvers and transfers, Hohmann and bi-elliptic transfers, orbital rendezvous and docking fundamentals, orbital perturbations introduction, and interplanetary orbital preliminaries. The course integrates theory with engineering applications, equipping students with basic capabilities in spacecraft orbit design and calculation.
学生需完成从近地圆轨道到地球静止轨道的转移轨道设计。任务包括：给定初始近地轨道高度与目标静止轨道高度，设计霍曼转移轨道，计算转移轨道参数与所需速度增量；考虑地球扁率摄动影响，修正轨道参数；设计远地点圆化机动，计算总速度增量需求；对比分析化学推进与电推进方案的速度增量与转移时间。编写计算程序完成所有数值计算，提交完整的设计报告与结果分析。
Students design a transfer orbit from low Earth orbit to geostationary orbit. Tasks include: given initial LEO altitude and target GEO altitude, design a Hohmann transfer orbit and calculate orbital parameters and required velocity increment; correct orbital parameters considering Earth oblateness perturbation; design apogee circularization maneuver and calculate total delta-v requirement; compare chemical propulsion and electric propulsion schemes in terms of delta-v and transfer time. Write a program to perform all numerical calculations and submit a complete design report with analysis.