Wright R-3350 Turbo-Compound radial engine. Two exhaust recovery turbines shown outside impellor casing area (top (silver) and lower (red blading)) that are geared to the crankshaft.
Wright R-3350 Turbo-Compound radial engine fitted at the Number Four position on the starboard wing of a Lockheed Super Constellation
A Wright R-3350 radial engine, showing, R to L, propeller shaft, reduction gearcase, magneto (silver) with wiring, two cylinders (rear with connecting rod), impellor casing (and induction pipe outlets) and injection carburetor (black); separate accessory gearbox at extreme left
All Aero 