tag:blogger.com,1999:blog-9578224.post112354165191363080..comments2023-06-21T07:47:48.993-04:00Comments on BACK OFF GOVERNMENT!: Carmack's Throatless Rocket EngineUnknownnoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-9578224.post-1123707405537159692005-08-10T16:56:00.000-04:002005-08-10T16:56:00.000-04:00Doesn't that kinda defeat the purpose of developin...Doesn't that kinda defeat the purpose of developing cheaper rockets if the performance is worse? IOW aren't they going to have to make up for it by not being able to launch as much, or use more fuel?<BR/><BR/>I guess if you save more in machining, then the increase in costs elswhere then it would make sense...<BR/><BR/>And you're right I was going by the assumption that what I saw was what I got in that photo. It makes a lot more sense if they add a flared out nozzle in that photo.<BR/><BR/>I'm still having problems understanding one thing though. I thought the whole point of having a throat was to accelerate the fluid... Kind of like putting your thumb over half of the opening of a garden hose end. Wouldn't getting rid of the throat affect the performance of the rocket in the end?William Tellhttps://www.blogger.com/profile/14840575381956651912noreply@blogger.comtag:blogger.com,1999:blog-9578224.post-1123569135015975102005-08-09T02:32:00.000-04:002005-08-09T02:32:00.000-04:00John isn't trying to make a nozzleless rocket, mer...John isn't trying to make a nozzleless rocket, merely a throatless one. IOW, the thing doesn't contract down to a throat, though down the road, he may make a version with a flared out nozzle end. The main point is that without that throat, the machining is tons easier and cheaper in theory. Whether he can make a reliable engine out of it remains to be seen, but there's a decent chance he can do it. Especially since he doesn't seem to have too many hangups about high performance.<BR/><BR/>The group I'm with is taking a different approach to things, but I think John's work is definitely worth thinking about.Jon Goffhttps://www.blogger.com/profile/10960488857253480586noreply@blogger.com