BAM'n'IVM Posted October 12, 2006 Share Posted October 12, 2006 http://www.space.com/businesstechnology/06..._sonicboom.html New sonic boom mitigation research...but it just doesn't seem practical. Link to post Share on other sites
habu2 Posted October 12, 2006 Share Posted October 12, 2006 Cool - but somehow I doubt sonic booms are a concern when the landing gear is still down... Link to post Share on other sites
BAM'n'IVM Posted October 12, 2006 Author Share Posted October 12, 2006 (edited) Yeah, well, they're doing low speed flights to make sure they don't put an eye out with that thing. Gentlemen, I present the F-15B "Schwing Eagle"... Edited October 12, 2006 by BAM'n'IVM Link to post Share on other sites
DPD1 Posted October 12, 2006 Share Posted October 12, 2006 It wouldn't be practical in a military high performance aircraft obviously, but I think they're shooting for the civilian market. The private jet companies are especially bending over backwards to be the first one to come up with a jet that can do SS over land. I notice the guy says there are still shock waves, but they're "really small and they won’t make much of an impact.†Wonder what their idea of really small is... I listened while they did the F-5 tests a few years back, and there was barely a difference between the modified and unmodified aircraft... Still plenty loud enough to scare the crap out of you. Dave - The North Spin - The Place for Everything Flight Test http://www.thenorthspin.com Link to post Share on other sites
Rapier01 Posted October 12, 2006 Share Posted October 12, 2006 New sonic boom mitigation research...but it just doesn't seem practical. Still a work in progress, but any aerospace research being done is always a good thing to advance the science. Link to post Share on other sites
BAM'n'IVM Posted October 12, 2006 Author Share Posted October 12, 2006 Still a work in progress, but any aerospace research being done is always a good thing to advance the science. True, but you've gotta agree there's something inherently silly about using a huge boom to try to reduce the boom... Link to post Share on other sites
Rapier01 Posted October 12, 2006 Share Posted October 12, 2006 Yeah, it looks pretty dumb from outward appearences, however if it works... From what the article said, it doesn't appear that they expect the boom to go away on an F-15, but more they're interested in the boom produced by the telescopic extension to gather data-which could then be applied to an aircraft fully shaped to have a low sonic boom. Link to post Share on other sites
BAM'n'IVM Posted October 12, 2006 Author Share Posted October 12, 2006 Hmmm...I got the impression that the overall boom was supposed to be reduced by the...appendage, as with the F-5 they modified with the canoe-shaped nose not too long ago. May have to read it again. Link to post Share on other sites
RedHeadKevin Posted October 12, 2006 Share Posted October 12, 2006 ooh... Freudian. Link to post Share on other sites
Cobrahistorian Posted October 13, 2006 Share Posted October 13, 2006 Tell the truth, tell a lie, tell the truth, tell a lie, tell the truth, tell a lie... Link to post Share on other sites
Mark S. Posted October 13, 2006 Share Posted October 13, 2006 Gents: Looks from the shape of the tip that it would produce a conical shock wave large enough to enclose the entire aircraft. Wonder if by doing that you reduce noise levels as you might not have shocks attached to the other surfaces. Anyone with a degree in aerodynamics on the board? Mark Link to post Share on other sites
hazmatt Posted October 13, 2006 Share Posted October 13, 2006 Gents:Looks from the shape of the tip that it would produce a conical shock wave large enough to enclose the entire aircraft. Wonder if by doing that you reduce noise levels as you might not have shocks attached to the other surfaces. Anyone with a degree in aerodynamics on the board? Mark That would be my best bet. Matt Link to post Share on other sites
SimFixer Posted October 13, 2006 Share Posted October 13, 2006 (edited) This series of tests brought to you by the makers of Viagra.....CAUTION: if your probe stays deployed for more than 4 hours, seek immediate help from a qualified aircraft structures professional as serious complications may occur. :P :huh: Also of note, in that first photo it looks like the Eagle still has turkey feathers on the engines. Unless he's got GEs installed instead of P&Ws. Nah....if it's indeed a B then those are prolly the Pratts with the feathers left in place. I have been known to be wrong, tho. Edited October 13, 2006 by SimFixer Link to post Share on other sites
jacobp51 Posted October 13, 2006 Share Posted October 13, 2006 I feel sorry for test aircraft - they are always so dang UGLY!!! On a serious note, I am very interested to see if that probe has any effect at all on how loud the sonic booms are. Link to post Share on other sites
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