Originally Posted by
awlaserdesign
new design of pegasus
The losses on that are going to be horrendous !
Remember, an EDF is NOT a compressor, not ever.
So although your design might
look like the full size one it won't work in the same way at all. The full size one had a multi-stage axial compressor supplying the front outlets with
high pressure cold air and the 'jet' part supplying the rear outlets with
high pressure hot exhaust. Thus, as both the front air and the rear jet exhaust was at high pressure they had a
high mass. And thrust is mass times velocity.
But with an EDF as the 'power supply' you don't get any pressure increases, just 'atmospheric pressure' so the mass is low and so the thrust will be low. Even more so when you add in the obstructional losses from the front 'diverters' and the overall high tapers.