Runway Slope
John,
In previous posts, reference has been made to runway slope as a consideration.
From OS first reply:-
"Advice of the Runway Slope would be beneficial, as the OCGs emanate from the runway surface, which, for a sloping Runway, be originating from a different elevation."
And your first reply:-
"...the simple trig analysis (which must include an approximation for slope to be at all useful)"
Not sure what slope you are talking about here but I assumed it was runway slope, hence my last post.
Understand your reply as the aircraft is airborne now and runway slope does not factor into it anymore.
But does runway slope need to be factored for finding the the height and distance of the obstacle in the first place. (via my trig calcs)
Cheers
SRU