lehpron
Posts: 6846
Joined: Tue Jul 10, 2001 3:42 am

Why Are Modern Stealth Designs W/o Canards

Tue Apr 02, 2002 11:16 am

Just wondering.

I just figure they cannot be as bad a the tailplane radar reflectivity, except they are not being protected by the wing in forward view...

Aren't they more manuverable w/canards?
The meaning of life is curiosity; we were put on this planet to explore opportunities.
 
LY744
Posts: 5185
Joined: Sat Feb 03, 2001 11:55 pm

RE: Why Are Modern Stealth Designs W/o Canards

Tue Apr 02, 2002 12:08 pm

Sukhoi S-37 Berkut:







MiG 1.44 MFI:






LY744.
Pacifism only works if EVERYBODY practices it
 
GDB
Posts: 12700
Joined: Wed May 23, 2001 6:25 pm

RE: Why Are Modern Stealth Designs W/o Canards

Wed Apr 03, 2002 12:35 am

Impressive aircraft, but I would seriously doubt if they are at all stealthy, look at those intakes in the bottom pic!
 
jwenting
Posts: 9973
Joined: Mon Apr 23, 2001 10:12 pm

RE: Why Are Modern Stealth Designs W/o Canards

Wed Apr 03, 2002 3:03 am

Berkut is not stealthy, just somewhat reduced visibility by use of RAM on leading edges and intakes. Much like Tornado and F/A-18.
It's also not in production but a technology demonstrator.
I wish I were flying
 
LY744
Posts: 5185
Joined: Sat Feb 03, 2001 11:55 pm

RE: Why Are Modern Stealth Designs W/o Canards

Wed Apr 03, 2002 6:49 am

Indeed, but the Russians claim that they are stealthy, after all, even the Su-37 has a significantly reduced radar signature. I guess we should give them the benefit of the doubt. If we don't consider these a/c, what are we left with? The F-22 and the F-35? If the S-37 still has some hope of one day leading to an operational fighter jet, the MiG 1.44 is deffinetely not going anywhere, as the Russian AF does not want to have anything to do with the a/c.

LY744.
Pacifism only works if EVERYBODY practices it
 
lehpron
Posts: 6846
Joined: Tue Jul 10, 2001 3:42 am

RE: Why Are Modern Stealth Designs W/o Canards

Wed Apr 10, 2002 4:20 am

So canards can be used but how about the stealth issue, are they a "dead give away"?
The meaning of life is curiosity; we were put on this planet to explore opportunities.
 
jwenting
Posts: 9973
Joined: Mon Apr 23, 2001 10:12 pm

RE: Why Are Modern Stealth Designs W/o Canards

Sat Apr 13, 2002 4:01 pm

Any flat surface decreases the stealth signature of an aircraft.
Canards therefore do increase the RADAR crosssection, unless they replace traditional elevators. But that would most likely necessitate a larger wing which is also bad.
If you check the S-37 it has a very sharp and straight leading edges. Compare that to the far more blended design in the F-22 which was used precisely to reduce radar cross section. It does have RO (reduced observability) features like the small rounded air intakes which remind of the F/A-18 and an ogival instead of round nose (but the Soviet have been using that shape for at least 40 years so it's not new).
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