Monday, November 17, 2014

Flywings Raven

I got one of these.
I taped my phone to it and took a video
http://youtu.be/3HXBxR8xfWU

Wednesday, August 7, 2013

geared prop test 2.5:1


6 inch 105g 2.53A                            41.5g/A
8 inch 180g 3.84A                            46.9g/A
10 inch 200g 3.25A 307g 5.21A         61.5g/A 58.9g/A
12 inch 200g 3.42A 420g 7.40A         58.5g/A 56.7g/A

Monday, August 5, 2013

geared prop test 3:1


motor cf2812 from giantshark.co.uk with and without homemade 3:1 gearbox

about 11.5V in battery

propeller size    current    thrust    geared down ratio    thrust to amps ratio
6 inch 3 blade     2.05        46g       3                       22.4
8 inch 2 blade     2.95       127g       3                       43.0
10 inch 2 blade    3.69       230g       3                       62.3
12 inch 2 blade    5.70       384g       3                       67.3

6 inch 3 blade      8.07      238g       1                       29.5
8 inch 2 blade     10.00      283g       1                       28.3
10 inch 2 blade    10.00      369g       1                       36.9
12 inch 2 blade    10.00      313g       1                       31.3

no prop            no throttle 0.09   half throttle approx 0.77  full throttle 1.2

Thursday, January 17, 2013

Model Hexadecacopter Flying

I got my hexadecacopter flying. These motors aren't up to the job. They are only rated for 2 cells and I am using 3 cells.  If I use a 2 cell battery, it doesn't really have enough power. So time to try some other motors.
Also, after a few crashes, the frame is getting a bit flexible. I'll try super-glueing the pieces together.


Monday, December 17, 2012

Hexadecacopter

I am making a hexadecacopter with 16 propellers, each 6 inches diameter.

Monday, November 26, 2012

I got my plane back.




Three days ago, I sent my plane on a 10km mission to the local town and back. It didn't come back. After hours of searching along it's flight path, we found it in the woods. For 2 days we tried everything to get it down. Today, we went with ladders ( again ) and a windsurfer mast and fishing rods, but the plane had jumped out of the tree by itself. I'm hoping the electronics will dry out ok. Thanks to John for seeing the plane in the tree.

Tuesday, November 20, 2012

plane with autopilot



I have tried the autopilot, that I got for the quadcopter, in my plane. Here is a successful 5km flight that it did on Sunday. The height above sea-level was pretty much constant, but I was hoping that the height above the ground would be constant! The top picture is the height above sea level. The bottom picture is the heights of the waypoints above sea level.