Acutally both existing stealth planes
and the B-2
are bombers. The upcoming F-22
will be an air-superiority fighter.
The reason these things are so ugly (specially the F-117A) is / was the lack of computing power
when it was designed. The knowledge on how to design stealth
planes has been around quite some time (... to-do : find out original mathematicians name) but the computing power to actually implement it, hasn't.
The trick is to have no surface
of the airplane
directly reflect radar-energy
back to the transmitting radar
(who would see a radar-return
) but to deflect it in other directions. The more modern B-2
bomber was designed with more computing power at hand. Therefore the designers were able to use all curved surfaces
instead of the straight edges used on the F-117A and the F-22.
materials are used as coating for the planes.
Talking about undergunned
: The F-117A is only able to carry two LGB
and has no other defensive
weapons (like a gun
or Air-to-air missiles
Also the stealth planes are not invisible
as seen in the 1999 Kosovo
conflict, when one was shot down
. During the Gulf war
the F-117A only went out on night-sorties so that the enemy
wouldn't be able to spot them.