Turbofan:Compressor

Compressor design

Real-world engines can have nearly 20 compression stages. We will first build a 3-stage compressor, in a single-spool engine to assess how it can be scaled to a full power engine, or if it will require more stages (= quite costly).

Rotor design

Special care has to be given to the rotor, since it will spin at very high rotation speeds (not calculated yet).

A blade mounting failure will likely cause the loss of the aircraft, given the constraints.

Compressor blades mounting

For the first compressor stage and the fan, the design is simplified by putting the roots of the blades parallel to the shaft. On stages 2 and 3, blades are not long enough, and to finish at the correct angle and not be twisted too much, they need to start at a non-zero angle. That brings problems to the design of the blade socket and fixing. The two pictures below propose a solution to this problem: blades' roots remain linear, the milling of the mounting is linear too, while it's a round part. This makes a strange effect, but allows the blades to be properly fixed on their sides, and if not enough, by a keyed design.

2nd and 3rd stage's compressor blade close-up and manufacturing

Coming soon.

Stator design

Even more complicated.