1. Determine the longitudinal growth of a 24-in.-long freestanding grain with a linear thermal coefficient of expansion of 7.5 × 10-5/? F for temperature limits of -40 to 140? F
2. The following data are given for an internally burning solid propellant grain with inhibited end faces and a small initial port area:
Determine the initial forces on the propellant supports produced by pressure differential and vehicle acceleration.