-
han1
这里我们针对三级固体火箭进行研究,主要考虑每一级发动机工作时推力 和比冲 与发动机试车存在摄动偏差(相差 )时所产生火箭关机点时刻的状态偏差。火箭的飞行的动力学方程可建立在地面发射坐标系中,火箭的第一级、第二级和第三级按照固定的俯仰角程序飞行,第二、三级飞行时已在大气层外,此时可忽略气动力的影响。(Here we study for three solid rocket, the main consideration at every level when the engine thrust and state arising the moment the rocket off point perturbation deviation (difference) in the presence of specific impulse and engine test bias. Outside of the rocket flight dynamics equations can be established on the ground coordinate system launch, the rocket s first stage, the second and third stages according to a fixed elevation angle of flight procedures, and the second, when the third flight already in the atmosphere, this when can ignore the effects of gas dynamics.)
- 2020-11-03 20:39:53下载
- 积分:1
-
机票预订系统
小型机票订票系应具备航班信息管理、旅客信息管理、机票信息查询及订购基本管理功能,具体如下:
(1)能对航班信息进行维护:输入、修改、删除航班信息。
(2)能对旅客信息进行维护。
(3)能进行航班信息、余票情况及旅客信息的各种查询。
(4)能进行机票的订购及退订,必须动态刷新库存。
(5)能对每个航班进行按月、季度、年份进行售票统计。
(6)能对每个旅客进行按月、季度、年份进行出行统计。
- 2022-02-28 16:56:40下载
- 积分:1
-
PNX100x-mini-case-studies.slideshow
PNX1005 mini case study
- 2011-02-01 11:57:37下载
- 积分:1
-
TMS320C6747程序烧写工程SPI_LOAD
TMS320C6747程序烧写工程SPI_LOAD(TMS320C6747 been programmed engineering SPI_LOAD)
- 2020-06-26 16:00:02下载
- 积分:1
-
Dcp
翅片上冷凝 udf,由于存在shadow必须考虑两侧冷凝udf。所以需要考虑两侧相变传热传质(The condensation of UDF on the fin, due to the presence of shadow, must be considered on both sides of the condensing udf. Therefore, it is necessary to consider the heat transfer and mass transfer on both sides)
- 2017-09-05 10:45:03下载
- 积分:1
-
new
说明: 齿轮轮齿渐开渐开线,螺旋源程序等,希望对大家有用(Involute gear tooth involute, spiral source in the hope that useful)
- 2011-04-16 09:57:51下载
- 积分:1
-
scan
端口扫描 多线程实现 使用的是VC++语言,有vs2010调试并测试成功(Port scan)
- 2013-03-29 17:53:02下载
- 积分:1
-
EKF
说明: 上研究生时写的扩展卡尔曼滤波程序(EKF),带测试例子,可编译执行(When the graduate writing program of the extended Kalman filter (EKF), with the test example, the implementation can be compiled)
- 2021-04-22 07:38:48下载
- 积分:1
-
AccessPW
提取ACCESS文件中的密码,不需要暴力破解。从文件中的某一字段直接解密(ACCESS extract document password, do not need to break the violence. From the document directly to decrypt a field)
- 2008-12-16 13:25:52下载
- 积分:1
-
test5
matlab图像转换,本人开发的用于路径规划算法(matlab image conversion)
- 2010-12-25 23:54:12下载
- 积分:1