Speaking of PSRU's and SkyCars.

Moller's ace in the hole is a ten pound planetary gear box and a double diameter,
half RPM ducted fan. Probably 50% more static thrust for the same HP 
as Vance pointed out because of the three times better disk loading factor.

With a 48 inch dia. fan the area shoots up to about 1730 square inches.
12 square feet. 12.5 HP per square foot disk loading for a 150 HP engine. 

With a ten inch diameter engine the area for a 30 inch fan is about 628
square inches. 4.36 square feet or 34 HP per square foot disk loading for 
a 150 HP engine.

>From Vance's chart roughly 50% more static thrust.

It will happen any day now.

Paul Lamar
 
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