Compare and contrast

"Cé hé sin" (michael-m-mouse) 01/21/2015 at 17:08 • Filed to: Design

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Here we find a ZF9HP automatic box. It's one of the most complicated mechanical things you can imagine and was designed by battalions of very clever engineers in Friedrichshafen. They were aided by electricity, which enabled them to use very clever computers and CAD programs. It's so complex that only about three people in the world understand it all and fortunately one of them has described it !!!error: Indecipherable SUB-paragraph formatting!!!

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Here by way of contrast we find a Napier Nomad turbocompound diesel aero engine. It was designed nearly seventy years ago by some British chaps using drawing boards, paper, pencil and slide rules. They were aided by electricity, which powered the lights. For all that it makes the 9HP seem the model of simplicity.

Chris_K_F drives an FR-Slow > Cé hé sin 01/21/2015 at 17:14

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Holy complicated combustion, Batman!

You can tell a Finn but you can't tell him much > Cé hé sin 01/21/2015 at 17:28

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That Napier Nomad . Cool article on the transmission too.

You can tell a Finn but you can't tell him much > You can tell a Finn but you can't tell him much 01/21/2015 at 17:29

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Damn son, check out this engine schematic.

Cé hé sin > You can tell a Finn but you can't tell him much 01/21/2015 at 17:42

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Nomad 1 makes my head hurt. The piston part of the engine is supercharged and turbocharged and the turbo has its own combustion chamber and drives a separate prop.

You can tell a Finn but you can't tell him much > Cé hé sin 01/21/2015 at 22:38

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Not only does it drive a prop, it runs an axial compressor that feeds the turbo. At least if I've wrapped my head around the schematic correctly.

Cé hé sin > You can tell a Finn but you can't tell him much 01/22/2015 at 06:16

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Napier got a taste for complexity after the commercial failure of the Nomad and went on to make the Deltic, also a two stroke diesel. It powered trains and there are still a few in ships.