Sal Cabaruvias (sal++at++sgidev.mdc.com)
Mon, 5 Dec 94 09:09:48 -0800
The setup is a 2 channel system with the pilot and copilot sharing the same
front channel and the pilot having a separate side view channel. We are
using a wide angle collimated optics (WACO) system with the pilot side having
zero gap mirrors for his front and side views (two channels).
Now for my question:
The WACO system has 45 degrees HFOV (hortizontal fiew of view) and 36 VFOV
(vertical fiew of view). In addition, there is a 3 degree pitch in the
VFOV to provide more down view angle.
Using the pfMakeSimpleFrust and pfChanViewOffsets, I can setup the two
channels but I can't account for the 3 degs of pitch. The way it's explained
to me, is that 36 VFOV is +25 from the center and -31 down. Using the
pfChanViewOffsets to add in the 3 degs simply makes a side window that is
pitched down 3 degrees. This is not the affect I want. I want the window
to stay at the original center line but with more down viewing angle. This
is critical since we are using a real HUD. When we on the runway, the horizon
is not where it should be when viewing thru the HUD with/out the 3 degs
using the pfChanViewOffsets command.
Has anyone done this before? Would you mind pointing me in the right
direction? What are the calculations/calls I need to get this to align up?
Thanks in advance,
sal
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Salvador Cabaruvias |email: sal++at++sgidev.mdc.com
CSSL |saying: "Well I be done seen about
McDonnell Douglas | everything when I see elephant
(310) 593-6719 | fly!" --- Dumbo ---
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