DeltaHawk Engines is based in Racine, WI, and has built several engine models with the intention of replacing a large part of the fleet of engines that are running on gasoline.

-They are 4-cylinder upright and inverted V-engines.

"DeltaHawk prototype on Cessna"

-As we see in the prototype drawing, they are two-stroke engines, V-4 with a Roots type blower between the 90° angle of the cylinder rows.

-They are offered with the following powers and main characteristics:
-Model DH160A4 / V4 giving 160 HP.
-Model DH180A4 / V4 giving 180 HP.
-Model DH200A4 / V4 giving 200 HP (at 2,500 rpm).
-Model DH160R4 giving 160 HP with vertical crankshaft.
-Model DH200R4 giving 200 HP with vertical crankshaft.

-There is a 300-420 hp in development being already a V-8 that can be upright or inverted V.

-The majority are in the process of certification by the FAA.

"Frontal areas"

-We can see comparatively the frontal area for the two types of Deltahawk engines that are offered with an equivalent power as a Lycoming.

"Inverted V-engine on Cessna"

From Appendix 6: Two new views of the 4-cylinder Diesel V-engine that is already commercialized.

"The complete Deltahawks"