ORIGINAL: 67Jag
C'mon guys....I'm the one who has been saying we CAN'T instantly accelerate (rotating Earth examples, etc.). And so we see the effects of that impossibility on our models as they turn DW. One more try, then bedtime:
Your model is capable of 100mph AS and headed right-to-left in a left-to-right, 100mph, steady wind. IOWs, it's hovering from your POV on the ground. Now you quickly turn it DW. In order to not lose lift, it somehow would have to turn and accelerate instantly to 200mph, now going from your left to right, so as to have an AS of 100mph. Instantly....and if it couldn't do that, then it would drop as it went from a 100mph tailwind, struggled through an AS of zero for a moment, until finally catching up and exceeding the 100mph 'sea of air' by 100mph in order to regain its 100 AS.
Where is the above reasoning flawed?
Great fun(!)....tomorrow, then.
Ray<br type=''_moz'' />
You are flying 100mph (airspeed) before you start your turn and are flying 100mph (airspeed,) - the speed lost due to increased drag from the turn, when you get down wind. The ground speed is accelerating through the turn. At 90 degs. it will be 100mph at 180 it will be 200mph, - the lost speed from the turn. The ground speed will increase constantly as the turn is made. That is your inertia. Do some reading, go ask a professor at a major college, take some ground school from a part 141 flight school. Any one of these would be better then using some long ago physics classes and anecdotal evidence reasoned out at the flying field. The whole models are different then full scale is a load. NASA would not have wasted decades of research on wind tunnel models if that were the case.