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Power plant - micro Bee

Old 10-30-2003, 01:30 PM
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Default Power plant - micro Bee

Hi again!

Well, the micro-Bee is moving along and taking shape, and I need to start thinking about the flight pack mechanics and such...

I'm pretty well settled on the RFFS-100 model, with remote actuators (I just don't care for the way they look imbedded in the surfaces).

The motor was a mystery until I went to the data page on I tried to do my own homework, but I'd appreciate another pair of eyes or so:

I estimate the finished ready-to-fly weight at 40g (1.41 oz).

The wing is 21 in^2, making the wing loading 9.6 oz/ft^2.

At 0.088 pound, desiring 60W/pound, I'm shooting for around 5 Watts (by the way, do these formulae even apply at these scales?)

Using that number, I'm looking at a KMF-M20LV; the motor is the M-20 Low-Voltage, with 4.2:1 gearing, turning a GWS 4.4 prop.

How'd I do? Does that sound close? I'd appreciate your thoughts... I was mulling over micro servos, but I think the weight and space will dictate I use the actuators.

I've attached a couple of pictures.

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