S
spacy600
Guest
"The resultant hot gases are expanded through the nozzle 425. Because the nozzle itself is manufactured of the solid fuel material (such as acrylic), the size of the nozzle expands as the motor burns. That is, at least a portion of the nozzle itself is burned and consumed because the nozzle is made of the solid fuel material. The initial flare of the nozzle 425 can be varied based on the altitude at which the motor is initially fired."<br /><br />http://tinyurl.com/yu88e8<br /><br />Thanks<br /><br />