FAA Seafire vs Corsair

Wild_Bill_Kelso said:

Ah, really interesting. So Jack Northrop made the original design and Ed Heinemann perfected it. No wonder it worked out so well.

Click to expand...

The perforated dive brakes seem to have shown up on the A-17s but only on bottom.
That is the lower flaps have perforations but the there are no movable upper surfaces.

The A-17 used a different attack profile.
It was intended for low altitude strafing and the dispensing of a large number of small bombs (twenty 30lb bombs from internal compartments)
Larger bombs like 100lb bombs were carried outside.

FLYBOYJ said:

The Northrop BT-1 (1935), blueprint for the Dauntless

Before the famous Dauntless was the only Northrop model developed for the Navy, the BT dive bomber, which introduced perforated air brakes.

naval-encyclopedia.com

Douglas SBD Dauntless (1939)

The Douglas SBD Dauntless is one of the most famous and best remembered USN dive bombers of WW2, for good reasons. Here is the complete story.

naval-encyclopedia.com

Click to expand...

Wow that naval encyclopedia page is terrific, bookmarked!