A-12 was the predecessor to the SR-71.
Is there an advantage to the K-max over a conventional helicopter? Just from the looks of it, and the description of the rudder system in hovering flight, it seems really complicated. KISS principle may have broken down.
Hmm... the A-12, I believe, was the predecessor to the B-2. The U-2 spyplane was the SR-71's official predecessor (which was originally named the RS-71 until a dignitary reversed the letters during the rollout ceremony).
Uh no.... the A-12 was built for the CIA, and is a predecessor to the SR-71. The A-12 was a single seat with a large camera mounted behind the pilot (like the U2), where the Electronics officer sits in the SR-71.
Check out www.habu.org for alot of history and pics.
Ah, ok. We are BOTH right on this one. A-12 was the internal Lockheed designation for the RS-71 (aka SR-71) prototype, but the plane was never called that in service. Nice link for the SR-71, by the way. Also, you may not be aware of this, but the CIA versions of the SR-71 had the red striping on it.
What I was thinking about, and this is probably due to my working at McDonnell Douglas, now called The Boeing Company, in the Integrated Defense Systems group, was the A-12 Avenger program which was cancelled. It is indeed the B-2 predecessor, and was based on a stealth version of the original "Flying Wing" which had both prop and jet versions long before there was technology to make it a viable aircraft.
For information on the A-12 Avenger, here is a link...
http://www.fas.org/man/dod-101/sys/ac/a-12.htm