"I am not impressed at all with these "placebo" ducted propellers.
Using a 2 blades propeller where tip is not even close to the duct won't suppress the tip disturbance.They could at least 3Dprototype their blades, and expose what a company can make…"
"3 engines? 6 engines? Nooooo . 2 are really sufficient, but with years of research! martinjetpack.com
Why not booking a flight first?
(to get a down-to-earth feeling, of course! :-)"
"Hi Trevor,
Perhaps you read my post about propeller guard I made with Shapeways last year.
Now, I print quite detailed parts myself
If you wish it, send me the STLs of this project, or others, and I can print them for you, with pictures of the…"
Indeed, assessing the real performance of the rig is why am designing this, to get a real life configuration, and see the advantage(s) in this range of dimensioning (Reynolds number).
"Ellison, your idea of sharing a grouped bulk filament order is great!
Perhaps, other people are interested in joining, just PM us.
I print with a Makergear M2 and 1.75mm ABS mainly."
"Congrats Ellison!
you could add this 3D printed hand InMoov, your picture says it all!
I probably try the same chinese filament supplier, buying 25kg of ABS to reach a good deal on shipping cost.
3D printer is UAS/UAV best friend!"
"Navigation aid, GPS being of one among others, is not concerned by aircraft piloting.
Aircraft piloting, or vector management, apparently assisted from the ground.
All kind of aircrafts were already flying well before GPS became available.
Talking…"
"@George
900mHz and 5.8gHz have very different propagation pattern, one being quite 'omni' (900) and the other being "line of sight" (5.8). For this reason, this wide band antenna you would wish is hardly conceivable.
We suggested to couple an omni…"
""24dBi High gain dish antenna" for which frequency range?
For a ground station, often an omnidirectional is combined with a directional, switched by diversity, so on top of a moving vehicle, the same combination of directivity would seem a good…"
"@Ellison.
Apparently, the APM is in quad config coax, X8. But, only 4 motors are used, the 4 remaining are like a backup. A quad with upper props spinning, and bottom ones unpowered. The 2 pololu boards are configured to react differently, based on…"
"@Ellison
Great price! But does frame rigidity is enough? when full equipped and flying?
Beyond protective aspect, this shrouding could reduce the blade tip vortex (with minimized gap), the vanes are equivalent to a propeller with a null speed. The…"