Design: Improved Steam Engine [3, 3, 4]
As marvelous as this invention is, it's utterly useless unless we find some way of harnessing it. The first step is to put a ninety-degree bend in the neck of the contraption so it rotates perpendicular to the ground. This prevents us from having to gearbox the rotation into another direction, conserving some of the power.
The next step is to transfer the spinning into something useful, like a paddlewheel. We experiment with a few different methods, but eventually settle on using a belt made of heavy rope. This is looped around the spinning portion, the wheel of the paddle, and a second adjustable wheel. The second wheel lets us dictate how much tension is in the belt, giving us an inefficient means of controlling the speed. The primary wheel is much larger in diameter than the spinning container, resulting in a low-speed but high-torque gearing. The paddle is made of wood and contains four blades, each standing as high as a mans knee.
The contraption is mounted on one of our largest ships. The rear sinks deep into the water, nearly lifting the bow out of the ocean. The open flame makes sailors nervous, and the loud screeching makes their teeth clench. The boiler needs to be periodically stopped and cleaned to prevent salt from causing a dangerous blockage. The belt has a tendency to slide on the wheels when wet, and too much tension causes it to snap dangerously.
Furthermore, the devices performance is...lackluster. The slow moving paddles will certainly propel the ship, but a stiff breeze will stall the boats progress. The captain points out that it'd be more efficient to replace the device with the same amount of rowers by weight, or even by swimmers pulling the boat along by tow line.
The biggest problem seems to be the inefficiency of the aeolipile design, followed by the weight. The current design is an interesting proof of concept, and despite the misgivings of the sailors, the commanders, and the king, our mathemagicians think they can produce a more efficient - and powerful - design, if given time. Very Expensive.