Quick Question

[Willy]

What do all these aircraft have in common? (If you've read the March 2009 issue of Aviation History please don't spill the beans)

Canadair CL-215 firebomber
Convair 240/340/440
Curtiss C-46 Commando
Douglas A-26 Invader
Douglas DC-6 airliner
Fairchild C-82 Packet
Fairchild C-123 Provider
Grumman F6F Hellcat
Grumman F7F Tigercat
Grumman F8F [linestrike]Hellcat[/linestrike] Bearcat
Howard 500 executive transport
Lockheed PV-1 Ventura
Martin 202/404 airliner
Martin B-26 Marauder
Martin PBM-5 Mariner
North American AJ-1
Northrup P-61 Black Widow
Republic P-47 Thunderbolt
Sikorsky S56 helicopter
Vought F4U Corsair

First one to get it right gets a free drink on Henry's tab in the Cantina

 

[Ferry_vO]

The R-2800 engine (Without any searching)..?

 

[Willy]

Ferry nailed it. The Pratt & Whitney R-2800 Double Wasp engine. It's claimed to be the best all around radial engine ever built.

 

[lefty]

Well it certainly was round !

 

[Willy]

Looking back at this, I should have added the XC-69E Constellation to the list and lost a bunch of the ones that are on it. :d