Optimal Terminal Guidance with Constraints at Final Time

Using Eq. (5), it may be seen that for propulsive gases having, for example, seven active degrees of freedom, and with \l/= I/sec, 90% of the available impulse is released in about */3 sec. An equivalent part of the terminal velocity occurs during that time interval if the mass faction of the working fluid is initially small. With the preceding information, the ideal characteristics of an extensive group of cold-gas thrusters may be assessed readily. Acknowledgment