HUD Gearing
I'm sorry to be an insufferable thickie, but I'm not sure I understand HUD Gearing.
The Jaguar I flew in (T4) had a 5 deg pitch bar above the horizon line, about an inch as I viewed it. If that's a 5:1 geared HUD does that make it an actual angle of 25 degrees, or 1 degree.
Using Tan x = pitch seperation/nut seperation (my nut was about 20 inches from the HUD), I reckon that the angle subtended between the 5 deg pitch bar and horizon bar was about 2.8 degrees - assuming I remember the one inch thing properly. To get a 1:1 ratio, the bars would need to be about 1.75 inches apart, and to get a 5:1 ratio they'd need to be about 8.75 inches apart.
So, how badly have I mis-understood this all?
Blunty.
Last edited by BluntM8; 7th April 2005 at 15:14.