Using numerical calculation, optimal roll program, the ratioof lift and drag, reentry Angle and reentry time of spacecraft are gotten.
通过数字计算，得到飞船的最优滚转程序、升阻比、再入角和再入终端时间。
2
A new work roll contour is advanced which is a linear variable crown (LVC) roll. This roll contour can realize linear ratioof gap crown and strip width.
提出一种新型线性变凸度工作辊辊型即lvc辊型，这种辊型实现了辊缝凸度调节与板宽成线性化。
3
These factors include ratioof upper and lower roll diameter , reduction ratio , enterance angle and roll rotation speed.