tdc question

[joegrundman]

Originally Posted by Hitman

Really?

IIRC when you change course you are effectively changing only one side of the triangle, i.e. the bearing to target, therefore the TDC can autoupdate it. If the target changes course it is a different matter, because the AOB changes and that one is updated through your bearing to target. And because the bearing doesn't change, your solution gets screwed.

Will make some tests and confirm :hmm:

if you change course, you are changing 2 angles of the triangle: bearing to target and target track angle (tta)

Say you have a triangle of the following

tta 90
bearing 70
AOB port 20

and you set up for a fast 90, then when the target passes in front of you you have

tta90
bearing0
AOB port 90

and you change change course 20 degrees port

then you have

tta 110
bearing 90
AOB port 20

when the ship passes in front of you you have

tta 110
bearing 0
AOB 110

but unless you reset your TDC to reflect this, it will still say AOB 90 when the bearing to target is 0