Propulsion Hacks (Engines bolted on, etc)

[RyanC]

First up, a FG-1 Corsair with a Westinghouse J-19A.

Apologies for the quality; it was scanned from a US Navy guidebook to introduce people to how jet engines worked, and used moire patterning to reproduce printed photos.

 

[Orionblamblam]

A nuclear "outboard motor." A 1961 design by GE for a self-contained nuclear propulsion pod that could be mounted to ships, allowing the ships to be nothing but hollow boxes ready to be stuffed full of cargo.

http://up-ship.com/blog/?p=9286

 

[riggerrob]

I suspect that your photo shows a flying test-bed for a new jet engine.
These days it is more common to test a new engine by bolting an extra pylon on an existing multi-engine airplane.
As for production "hacks" … when production of large piston engines overlapped with early jet engines, a few airplanes were powered by both. The Ryan Fireball had a piston engine turning a propeller at the front and a jet engine pushing hot air out the tail.
The USAF retro-fitted a lot of radial-engine transports with booster jet engines for take-off: B-36 bomber, C-119 Flying Boxcar, C-123 Provider, P2 Neptune, etc.
Jet Assisted Take Off rockets can be easily fitted to dozens of other airplanes to improve take-off and climb performance: C-130 Hercules, Martin Marlin flying boat, etc.

 

[Apophenia]

I suspect that your photo shows a flying test-bed for a new jet engine...

Ryan's image kind of shows both. The Westinghouse 19A Yankee (later J30) turbojet was originally intended as a booster engine for the Goodyear FG-1A. The second X19A was test flown under Corsair BuNo 13041 - as a booster - on 21 January 1944.