no... look at as a choke on a shotgun, close it up and the the thrust is more concentrated with less power, open it up with the burner lit for max thrust
10 posted on 01/01/2016 8:23:43 PM PST by Chode
(Stand UP and Be Counted, or line up and be numbered - *DTOM* -w- NO Pity for the LAZY - Luke, 22:36)