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mustang65
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 Posted: Jan 31, 2010 - 05:09 PM
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Joined: Sep 03, 2009 - 04:00 AM
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| You could also change the material on the plane by making the front of the fuselage titanium alloys since titanium is great for high speed and will not wear it will not cause the airframe to degrade like baz said. The Inlet is made from aluminum so it will wear at those speeds so if it is titanium it won't break. |
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 Posted: Jun 19, 2013 - 12:28 PM
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F-16.net Sponsor
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That_Engine_Guy
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Posted: Jan 31, 2010 - 09:57 PM
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Elite 2K
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But Titanium alloys weight much more than Aluminum alloys...
Can't get something for nothing. TEG |
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[Airplanes are] near perfect, all they lack is the ability to forgive.
β Richard Collins
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mustang65
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Posted: Feb 04, 2010 - 09:02 PM
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| Aren't the new aluminum alloys like the ones on the raptor lightweight and able to take the stress of high mach flight? There are titanium alloys that are lightweight and heat resistant too. |
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That_Engine_Guy
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Posted: Feb 05, 2010 - 02:18 AM
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Elite 2K
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They all have trade-offs. You may gain something in regards to heat, but loose durability; or gain strength but increase weight. The aircraft are built with the best combination of materials that give the desired performance. "Cruising" at MACH 2.5 for 20 minutes wasn't desired.
TEG |
_________________
[Airplanes are] near perfect, all they lack is the ability to forgive.
β Richard Collins
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Guysmiley
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Posted: Feb 05, 2010 - 11:14 PM
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Elite 1K
Joined: May 26, 2005 - 08:39 PM
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| TANSTAAFL. There ain't no such thing as a free lunch. |
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mustang65
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Posted: Feb 06, 2010 - 04:15 AM
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| Well then use the one that is lightweight and can take the heat of high speed and then the Eagle should be able to maintain top speed for 5 minutes. |
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fiskerwad
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Posted: Feb 06, 2010 - 05:30 AM
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Forum Veteran
Joined: Nov 13, 2004 - 07:43 PM
Posts: 712
Location: 76101
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Maybe this would work?
fisk |
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dragorv
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Posted: Feb 06, 2010 - 05:53 AM
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Joined: Nov 20, 2009 - 03:47 AM
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| That would work! It's just too bad all of NASA's space stuff is being put away essentially..... |
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That_Engine_Guy
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Posted: Feb 06, 2010 - 06:01 AM
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Elite 2K
Joined: Dec 14, 2005 - 05:03 AM
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mustang65 wrote:
Well then use the one that is lightweight and can take the heat of high speed and then the Eagle should be able to maintain top speed for 5 minutes.
Mustang; nobody is going to rebuild an Eagle using different metal alloys, advanced '2-of-a-kind' motors, and additional fuel stuffed into every nook/cranny that had weapons/avionics in them.
The F-15 is what it is, and it is NOT a MACH 2 interceptor.
Want to fly MACH 2.5 for an hour? Get into NASA's Blackbird research program.
Give it up already? TEG |
_________________
[Airplanes are] near perfect, all they lack is the ability to forgive.
β Richard Collins
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fiskerwad
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Posted: Feb 06, 2010 - 01:39 PM
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Joined: Nov 13, 2004 - 07:43 PM
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dragorv wrote:
That would work! It's just too bad all of NASA's space stuff is being put away essentially.....
But that's what makes it so easy, should be possible to pick up some surplus SRBs at NASA's upcoming yard sale?? 
fisk |
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mustang65
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Posted: Feb 06, 2010 - 07:17 PM
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Enthusiast
Joined: Sep 03, 2009 - 04:00 AM
Posts: 99
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| Yeah but that would be the solution to fly at top speed for five minutes is to just replace the alloys so ti can handle high speeds. I have given up on the idea that the Eagle is a Mach 2.5 interceptor. |
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outlaw162
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Posted: Feb 09, 2010 - 03:40 AM
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Forum Veteran
Joined: Feb 28, 2008 - 02:33 AM
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You may want to switch gears here and start thinking in terms of that hot prom date that may be in your future.
OL |
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mustang65
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Posted: Feb 11, 2010 - 03:49 AM
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Enthusiast
Joined: Sep 03, 2009 - 04:00 AM
Posts: 99
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| Yeah but all I am saying is all they would need to do is change the alloy then the F-15 will be able to maintain top speed for five minutes. |
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That_Engine_Guy
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Posted: Feb 11, 2010 - 05:09 AM
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Elite 2K
Joined: Dec 14, 2005 - 05:03 AM
Posts: 2208
Location: Under the engine somewhere.
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So if you change the aluminum alloy at the leading edges of the wings to 'something different' what are you going to do with the canopy and/or radome?
Aerodynamic heating to the canopy may not be good at MACH 2.5 for more than 5 minutes; IE it heats up enough after 3 or 4 minutes to become brittle and/or soft? What about the fiberglass radome? When will it shatter?
You can't just change one 'weak link' in a chain and expect the whole chain to be 10% stronger. If you change one weak link, the next weakest will break, change that one, and the third weakest will break...
See where I'm going? TEG |
_________________
[Airplanes are] near perfect, all they lack is the ability to forgive.
β Richard Collins
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fiskerwad
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Posted: Feb 11, 2010 - 01:49 PM
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Forum Veteran
Joined: Nov 13, 2004 - 07:43 PM
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