About

Gender

Male


About Me:

I've been flying RC aircraft for the past 19 years (started when I was 6) and I now work designing and test flying UAVs.


Please tell us a bit about your UAV interest

I am very interested in 3D printing and how it can be used for small scale UAVs to customize airframes to customer's needs. I also am interested in long-endurance operations and am trying to do thermal detection with my Radian Pro running an APM 2.5


Hometown:

Somerville, MA


Activity Feed

Eli Cohen commented on ChasityWhite's blog post What Can't Be Missing for A Long-Distance 900 MHz Drone
"Agree with Edward Sellars below. Frequency is lower for longer range.

These posts appear to be quite blatant advertising: "Investment in these products is recommended""
Aug 9
Eli Cohen commented on Jack's blog post Preferred Motors Of DRL Pilots
"This seems like an ad

I was hoping to get some analysis of what motors people actually use but this is just a bunch of fluff and then a mention of one product."
Nov 27, 2017
Eli Cohen commented on eUGENE's blog post Is it possible to beat drone jammers?
"do they also jam sound? wondering if you could place a few really loud sirens around their property at known coordinates and use those for positioning. each one could be at different freq and a bit of simple math (intensity + frequency shifts) might…"
Oct 9, 2017
Eli Cohen commented on Dino Mehanovic's blog post Drone Landing Autonomously on Walls
"Didn't Stanford do this back in 2010? https://youtu.be/Uo-7YlJRsbM"
Aug 4, 2017
Eli Cohen commented on jlcortex's blog post Searching for heavy duty applications for HYBRiX20
"I am curious what requirements were used in the design of this aircraft? Was it based on market data for what people needed? Were there clients you initially had in mind? Perhaps I am misunderstanding your post but I would imagine that you would…"
Jul 27, 2017
Eli Cohen commented on Cameron Sickbert's blog post Emergency Response UAV Now on Indiegogo!
"from the render, the tail volume looks much too small in both horizontal and vertical dimensions. I've had this bookmarked for years to remind me of the formulae generally used here. "
Jul 12, 2017
Eli Cohen commented on Rick Yonika's blog post Google wing, NASA greased lightning, move over....
"very very cool! here's a link to the MS Thesis I was helping on (just lending a hand, really)"
Mar 20, 2017
Eli Cohen commented on Rick Yonika's blog post Google wing, NASA greased lightning, move over....
"this is CRAZY! I worked on a concept like this many many years ago but the controllers were a pain. Insane to see the performance here. Very impressive!!! Are you doing gain scheduling?
Here's a render of the vehicle I worked on..... looks pretty…"
Mar 20, 2017
Eli Cohen commented on Aldo Vargas's blog post Slung load controller
"So cool! I did this (in a simpler setup) as an undergrad with a simple modification of the position control loop to take into account the angle and angular acceleration of a slung payload. Also did everything in a vicon room with no onboard…"
Feb 10, 2017
Eli Cohen commented on Andrew Murphy's blog post Local Motors Airbus Cargo Drone-1st Test Flight
"Reading back over the initial comments some of us made when the winning design was announce is... illuminating.
see thread here"
Nov 9, 2016
Eli Cohen commented on Andrew Rabbitt's blog post Climb-Glide: Improving the range of fixed-wing, electric UAVs
"very interesting!
I did exactly the same math using an optimization routine to choose the "best" climb and glide profile based on some requirements. I was actually trying to optimize aircraft weight (via battery weight reduction due to lowered power…"
Sep 18, 2016
Eli Cohen commented on Chris Anderson's blog post Winners of Airbus cargo drone competition announced
"@Chris - before I shot my mouth off before, I looked up what the deliverables were :)
(found here: https://cocreate.localmotors.com/localmotors/airbus-cargo-drone-cha...)
Perhaps I wasn't privvy to further requirements but nowhere in here did I see…"
Jul 18, 2016
Eli Cohen commented on Chris Anderson's blog post Winners of Airbus cargo drone competition announced
"Without putting actual analysis up alongside pretty pictures, I wonder what the point of all of this was? This really just feels like a large brainstorming session for configurations that might be amenable to further investigation and a chance to…"
Jul 18, 2016
Eli Cohen commented on Chris Anderson's blog post 3D-printed mount for Lidar sensor
"... it's a bracket? Unclear why this is news. "
Apr 22, 2016
Eli Cohen replied to Bruce Baxter's discussion Mapping control surfac movement with plane speed. in ArduPlane User Group
"eager to see how it works out, please post video! might run into tuning issues getting it just right but should be easy to flip in and out of stabilize mode. "
Dec 1, 2015
Eli Cohen replied to Bruce Baxter's discussion Mapping control surfac movement with plane speed. in ArduPlane User Group
"So the complexity to do that is, of course, trivial. The question, I think, is what sort of performance gain you are looking for and how you will characterize an improvement in performance. Did you have something crash when it was flying slow?
It's…"
Nov 30, 2015
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