Franklin O-805

The Franklin O-805 was an American air-cooled aircraft piston engine, designed in the mid-1940s and was to be used in radio-controlled pilotless drones that were to be guided from an accompanying control plane. Due to project requirement changes and cancellations the engine was not produced.
A smaller displacement 12-cylinder Franklin engine of 1941 was known as the O-595 or 12AC-596.

Variants

O-805

;12AC-806:0
;12ACG-806 : at 3,200 rpm, geared to 0.632:1.
;12ACGSA-806 : at 3,200 rpm, supercharged and geared to 0.632:1, or to 0.587:1.

O-595

;12AC-596: at 2,600 rpm
;12ACG-596: at 3,500 rpm

Applications (intended)

Interstate XBQ-5
Interstate XTD2R-1

Survivors

There is an O-805-2 on display at the New England Air Museum, Bradley International Airport, Windsor Locks, CT
One surfaced and was sold privately in August, 2016, on eBay for US$8500.