Hmmm, interesting anyway I chose the rotary because they produce less vibration than any piston engine I was aware of, stripped of the auto junk and turbocharged they can easily have a power to weight ratio of 1:1, rotaries are generally smaller in physical size (important for reduced surface area and drag) for a comparable power than pistons and the RPM range of the rotary is compatible with the diameter of fan I'm using. There aren't many stock piston engines you'd want to run at 5000 rpm for hours on end. The turbo I'm using is a Chinese made equivalent to the T76. In hind sight I'd actually have better high altitude performance with the T72, without having to bleed off compressor air.
Nice 10psi will be a breeze for that thing. On a similar note, the T67 was a popular turbo in my world - imo though it was a mismatched comp/turbine, exh. side was too small.
Oh yeah, in fact I should be able to maintain sea level power up to between 8,000 and 8,500 feet altitude and even higher if I bleed off excess air flow from the compressor. This turbo is really too big for this engine for the boost I'm looking for. I wanted a big turbo to help tame the exhaust note which I'm told is horrendous on a rotary.
Finished painting the fan today. Should finish cutting and bending 2024 aluminum strips later today to protect the rims of the outer ring, they'll be riveted on. A nearly completed wooden mock up of an F15 pitch/roll mixing linkage I'm considering for my tailerons. Although unless I have the parts CNC machined they would be somewhat difficult to fabricate. I have an optional setup using a number of bell cranks although the mixer would be more compact.
hey dumazzz, that fan is not a true circle...it's asymmetric. when it starts to rotate @ high rpms it's going to disintegrate from material stress IDIOT. :eek:
You should probably stick to flipping burgers and getting your BJ's from fat chicks. http://en.wikipedia.org/wiki/Single-blade_propeller http://history.nasa.gov/SP-445/ch4-5.htm
you can't ACCURATELY calculate the material stresses in a crudely machined fan such as this, turbines are milled with PRECISION what an idiot