Remember with turbine powered bombers the flight takes 5 hours crossing the aerial zone of at least 5 NATO countries with modern aircraft and radars. And we know it was loaded with nuclear weapons, because of radioactivity.
http://www.theguardian.com/politics/2014/dec/26/putin-raf-ty... The Typhoon is unable to engage the enemy said by David Cameron to pose the biggest threat to Britain’s security. And it will not be able to do so until 2019 at the earliest.
In fact, maybe the paradigm of airplanes is outdated since USSR giving cheap missiles and crude radar to the viet kong have proven that in terms of costs planes can be shot down with a 1/100 ratio in terms of costs. Plus aerian superiority paradigm (a WWII idea) works against developed countries relying on a dense industrial country. But, it does not work against people relying on AK47 and propane bottles coupled with a simple radio system.
Money is the nerve of war.
Angles: Sorry I can't find the article explaining how the DOD imposed using a software for B2 (and not F35) that limited the possibility to make nice curbs.
However just look at the plane. And remember any physics lessons you have been taught : sharp angles make discontinuities. Discontinuities are easy to spot.
Stealth anyway is a scam.
B2 were spotted by US radars technologies bought by french since 1991 with networked radar (thomson). Validated during 1st iraki war while radar operator could put a name on the weired stuff they were seeing on screen they already saw flying over European space without authorization. (Spying allies is really not nice)
You can evade one radar by deflecting signal. But if in a network of radar the signal is reintercepted, then it is bad for the plane.
Also since 2000 it has been proven that the flight of a stealth plane above a normal "cellular phone grid" can be detected by the additional energy that it bounces back.
Still with networked radar, stealth planes can make "holes" of expected energy. (ionosphere does reflect a little part of energy, and stealth fighter makes "shadows/holes") it may require bigger wavelength though.
With IR detection, plane still leaves energy traces (like air friction).
Stealthiness only value is in plane vs plane fight to diminish the electronic signature, thus a frontal stealth is more than enough.
Stealth is a costly arm race. That is exactly what killed USSR that tried to fight USA IDS program (that was a scam).
Strategic thinking must address the costs problems.