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By: - 25th May 2009 at 14:17 Permalink - Edited 1st January 1970 at 01:00
Wankel Engines
A Wankel Engine is a Rotary engine, it does not contain any crankshaft or pistons nor does it look like a normal internal combustion engine either externally or in its design.
If you imagine a triangular sponge baking tray, with a hole in the middle for a drive shaft coming up through and connecting to a three bladed rotar with seals on the end which sweep round intaking fuel/air mixture in one area, exploding in next area, exhausting in third area, etc..
This is obviously a very crude outline, to understand rotary engines you must read some books on engine design, they do have a number of advantages, size and smoothness of running among them. Hope this helps.
Cheers Brian.:)
By: - 25th May 2009 at 15:43 Permalink - Edited 1st January 1970 at 01:00
And Wankel engines are certainly not reciprocating engines.
Thus, they are neither reciprocating nor turbine engines.
What are the relevant performance requirements?
From
http://www.flightsimaviation.com/data/FARS/part_121-183.html
planes with 4 or more reciprocating engines must sustain a certain rate of climb at a certain height with 2 engines out.
But for planes with 2 inoperative out of 4 or more turbine engines have different requirements:
http://www.flightsimaviation.com/data/FARS/part_121-193.html
the climb rate must merely be positive, or indeed less.
What precisely are the performance requirements for a plane with 4 or more Wankel engines, with 2 engines out? Seeing how neither reciprocating nor turbine engines apply?
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By: chornedsnorkack - 24th May 2009 at 22:50
See
http://www.flightglobal.com/articles/2009/05/24/326897/mistral-prepares-piston-engines-for-certification.html
The engines are repeatedly described as "piston" engines. But are wankel engines piston engines?
Also, what exactly is a "rotary" engine? Surely a rotary engine is a reciprocating engine where crankshaft is fixed and pistons move?