|
Post by deltav on Feb 17, 2017 4:19:59 GMT
If all you need is 22 K exhaust, you can do a hell of a lot better than that. outstanding. However your expansion angle is 6 degrees, for a 12 degree cone of unstealthy. So either a reduced expansion angle or a straight cowl after (almost the same) to reduce signature. We don't want pesky sky searchers to look up our nozzle. Does a narrow nozzle mean more stealth? Doesn't the gas expand still nice and hot and shimmery right after? Had no idea about this at all.
|
|
|
Post by apophys on Feb 17, 2017 4:50:04 GMT
outstanding. However your expansion angle is 6 degrees, for a 12 degree cone of unstealthy. So either a reduced expansion angle or a straight cowl after (almost the same) to reduce signature. We don't want pesky sky searchers to look up our nozzle. Not a problem, I think. Just put something like this in the stream after dropping to 22 K : You need to block the view of the chamber anyway.
|
|
|
Post by RiftandRend on Feb 28, 2017 20:16:21 GMT
outstanding. However your expansion angle is 6 degrees, for a 12 degree cone of unstealthy. So either a reduced expansion angle or a straight cowl after (almost the same) to reduce signature. We don't want pesky sky searchers to look up our nozzle. Does a narrow nozzle mean more stealth? Doesn't the gas expand still nice and hot and shimmery right after? Had no idea about this at all. With a properly designed nozzle the gas has cooled significantly (22 K in the case of this engine) so that probably won't be an issue.
|
|