Re: Prop Efficiency

From: John Kagan <john_kagan_at_hotmail.com>
Date: Wed, 23 Aug 2006 19:32:09 -0000

--- In Indoor_Construction_at_yahoogroups.com, "markdrela" <drela@...>
wrote:
> ...Try specifing a speed of 0.1 m/s, and then 0.01
> m/s. If it gives nearly the same thrust/power ratio and nearly the
> same prop geometry, then it probably has the modification.

Based on your test, it seems Javaprop does not have the modification.
The thrust/power ratio goes from .03N/.01W to .01N/0W, and the cord
increases by 1000mm.

Is that why I'm getting huge cords when I enter Indoor type
parameters? I'm using:

2 blades
50 rpm
.5m diameter
.5m/s velocity
.0025Nm torque
Received on Wed Aug 23 2006 - 12:55:58 CEST