Hi F4UDOA,
>Also if the F4U climbs with cowl flaps open then it will accelerate better than it climbs because it's drag condition is lower.
Climb and acceleration are directly proportional in each of the two conditions.
Opening or closing the cowl flaps means changing the condition, but not that the concept of proportionality between climb and acceleration is wrong :-)
Regards,
Henning (HoHun)