[Milsurplus] High & Mighty SCR-718

[C Whitaker]

de WB2CPN             2005.07.31.2214

I'm missing something about this.  How can the
radio altimeter and the pressure altitude tell
anything except the barometric pressure, adjusted
for sea level, at the time?  If you fly 29.92 at
the indicated assigned altitude you're going to
see the absolute altitude, (the radio altimeter),
change if the barometric pressure changes because
the aircraft will climb or decend as the pilot
maintains the indicated altitude. If you had weather
charts that showed the current isobars you could get
some sense of heading by knowing if you wanted to be
flying across isobars, or parallel to one.

Then there's the way they measured pressure altitude
in "Strategic Air Command", I think, by measuring
the temperature of boiling water.

Then there's the Cat and the Duck that every pilot
knows about.  A cat and a duck are carried in their
cages, and when the pilot begans to wonder which way
is up and which way is down, he dumps the cat out
of it's cage and notes which way it falls.  For IFR
penetrations without instruments he releases the duck
and follows it down.

73  Clete        Sorry 'bout that, Mac.