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Post by Major Destruction on Nov 4, 2005 16:24:42 GMT -5
Some aircraft (SR-71, MiG 21) have cones that protrude from the front of the engines. Can anyone tell me what those cones are for and why most aircraft don't have them?
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kemosabe
Junior Member
Anything but new member
NO GOOD DEED GOES UNPUNISHED
Posts: 69
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Post by kemosabe on Nov 4, 2005 21:11:15 GMT -5
so do you want us to answer that or is for cadets
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Post by Major Destruction on Nov 7, 2005 8:50:22 GMT -5
That's for the cadets. I'm under the delusion that they will actually put forth effort to find the answer if I ask questions.
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Honey
Full Member
Support Search and Rescue...Get Lost!
Posts: 160
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Post by Honey on Nov 7, 2005 20:50:07 GMT -5
I assume that it would be used to provide the needed comression to run the ram Jet. Thes would be a little more aerodynamic than a round blunt object at higer speeds. But as stated here drum.umd.edu/dspace/bitstream/1903/2542/1/umi-umd-2426.pdf• Diffusing the required amount of air needed for engine performance with minimum total pressure loss • Supplying the air with tolerable flow distortion • Minimizing the amount of added external drag to the vehicle • Minimizing both shockwave and viscous losses for good total pressure recovery • Minimizing added mass to the vehicle • Providing a self-starting capability at the required Mach number |
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Post by firstknife on Nov 12, 2005 7:18:01 GMT -5
OMG! a CDT can actually do research and find the right answer
btw google for those who dont know it can be used as an encyclopedia by using the search bar and instead of typing in the search word put it in a question format, and it will give you the answer or several sites to research. it can also be used as a calculator
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Post by <>Major_Havoc<> on Nov 17, 2005 13:26:21 GMT -5
Ok so there is one cadet who will do it. dont get used to it Cavett.
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Honey
Full Member
Support Search and Rescue...Get Lost!
Posts: 160
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Post by Honey on Nov 17, 2005 17:47:57 GMT -5
Ya i am just an over achiever (note sarcasm)
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Post by <>Major_Havoc<> on Nov 19, 2005 0:19:43 GMT -5
Their better be sarcasm in that, once Cavett finds out cadets will do work were all doomed.
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Post by Beetlebailey on Dec 9, 2005 11:10:51 GMT -5
so what are they for?
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Post by Major Destruction on Dec 9, 2005 13:51:27 GMT -5
They do everything mentioned above by preventing the supersonic shockwave from entering the engine.
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Post by <>Major_Havoc<> on Dec 10, 2005 19:20:40 GMT -5
DUUUUUUU I could of told you that with half my brain tied behind my back.
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