DA
Given that we are talking about a "Speed Cowl" for a Delta airplane in this thread, I have to ask about one consideation.
Given that your exit air is going to create a "seperation bubble" and therby cause induced drag would it not be best to duct the heated air as far to the rear as possibe?
I know that most cowl designs simply dump the air out the sides or rear of the cowl on top of the wing, doesn't that cause a disruption of the airflow over the top of the delta plane form?
Where you have a airplane that has a high induced drag isn't this a problem, that you could reduce by ducting the heated air toward the rear of the plane as much as possible?
Wouldn't the best solution be to have your exit facing the rear of the craft at the tail even if you need to add a bit of weight to duct it?