Charles Blouin
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  • QC - Quebec
  • Canada
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Charles Blouin's Page

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Charles Blouin commented on Charles Blouin's blog post 10 km high flight with a 1kg quadcopter!
"Thrust is proportional to air density. Air density is exponentially lower with altitude. This means that the propellers will spin faster at higher altitude. Consequently, the limit is probably how fast your propellers can spin. You need to find a…"
Mar 23
Charles Blouin commented on Charles Blouin's blog post 10 km high flight with a 1kg quadcopter!
"Ok, this totally looks like product placement now, but I swear it was not planned. I was just contacted by Anik, one of the person working on the quadcopter in the video. He used the RCbenchmark Series 1580 (of which I am the designer) for the…"
Mar 21
ausdroid commented on Charles Blouin's blog post Pacific Drone Challenge
"This is a joke.....right? A competition with contestants organising their own authorisations to use the proposed fields and access international airspace? Isn't the whole aim of an organised event to have the organiser arrange these permits so…"
Mar 14
Charles Blouin commented on zhangqi's blog post Hybrid multirotor 7 hours 17 minutes flight.
"Great, don't hesitate to contact me if you have questions! Anyhow, I'd love to see a post on your optimization process when it is completed."
Feb 7
Charles Blouin commented on zhangqi's blog post Hybrid multirotor 7 hours 17 minutes flight.
"Good job! Did you do any test on the motor and propeller to maximize flight time?"
Feb 5

Developer
John Arne Birkeland commented on Charles Blouin's blog post Pacific Drone Challenge
"My first thought was to build a blimp, giving you 'unlimited' flight time to solar charge batteries etc. My second was that Japan to USA is the same direction as Jet streams flow if I am not mistaken."
Jan 20
Joshua commented on Charles Blouin's blog post Pacific Drone Challenge
"In 1998 an Aerosonde UAV (2.7m wingspan, 20cc engine) managed to fly 3200km and cross the Atlantic ocean with 6 litres of fuel over 26 hours. This new challenge is a little over double the distance, but with an increase in scale and more modern…"
Jan 18
Andrew Rabbitt commented on Charles Blouin's blog post Pacific Drone Challenge
"Well, you could adopt an albatross strategy and include perching to solar-recharge, dynamic soaring and thermaling to do the business."
Jan 17
Chris Cloutier commented on Charles Blouin's blog post Pacific Drone Challenge
"Solar or diesel. Where's the Atlantik Solar team?"
Jan 17
Charles Blouin commented on Charles Blouin's blog post Pacific Drone Challenge
"With numbers: a 1000kg glider dropping 1000 m  and a glide ratio of 1:50 will require (1000kg * 1000 m * 9.81 m/s) = 9.8MJ. Thus, you need 9.8 MJ to travel 50 km. From there, you can figure out the specific energy density needed."
Jan 17
Charles Blouin commented on Charles Blouin's blog post Pacific Drone Challenge
"The glide ratio and the mass of the glider allow you to calculate the energy needed to fly a given distance. It is not an approximation: it represent the real energy loss due to aerodynamics effects. A motor will not be 100% efficient, so the actual…"
Jan 17

Moderator
Vladimir "Lazy" Khudyakov commented on Charles Blouin's blog post Pacific Drone Challenge
"Explain me please, what do you mean - climb 100 km?"
Jan 17
Charles Blouin commented on Charles Blouin's blog post Pacific Drone Challenge
"As I wrote in the post: or realistically, climb 100 km over the whole trip.:)"
Jan 17
Charles Blouin commented on Hector Garcia de Marina's blog post Pilot a "supra" rotorcraft
"Congrats! Any paper on subject is available? How difficult was the implementation with the Bebop platform and the motion capture?"
Nov 28, 2017
Charles Blouin commented on Zubax Robotics's blog post Evaluating the efficiency of a sensorless propeller drive using UAVCAN GUI Tool
"Interesting experiment! With complete characterization of the motor and propeller (using a dyno on the ground), you could obtain mechanical efficiency in flight with this."
Nov 7, 2017
Charles Blouin commented on Greg Crutsinger's blog post Fly4Fall: A global initiative calling on volunteer drone pilots for science
"Thanks for the info!"
Oct 27, 2017

Profile Information

About Me:
Founder and designer of the RCbenchmark. M.S.c. Mech. Eng. in controls, drone enthousiaste,
Please tell us a bit about your UAV interest
Motor and propeller testing, optimization.
Hometown:
Gatineau

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Charles Blouin's Blog

Pacific Drone Challenge

Posted on January 16, 2018 at 2:29pm 10 Comments

The Pacific Drone Challenge, inspired by the Xprize, has the goal of pushing the boundaries of what is possible with civilian drones. You have to do it for your name in the history books as there is no financial prize. Could…

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Thrust Stand for Large Motors

Posted on October 26, 2017 at 11:00am 1 Comment

My colleague and I received a lot of help from the DIYDrones community two years ago when we launched the Series 1580 with our company RCbenchmark. We had just finished our masters in robotics. After a lot of work, we are now releasing the Series 1780, a dyno to test motors and propellers producing up to 25 kgf of thrust.

Although this…

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The Otus Tracker by RCbenchmark: a more affordable motion-capture system for drone development.

Posted on September 10, 2017 at 1:45pm 3 Comments

Almost a year ago, I posted here about how VR technology could help control and perform research on UAVs in an indoor environment and at a more affordable cost. Currently, the most advanced indoor UAV research lab in the …

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Season Two of the Trust Time Trial (T3) Contest 
A list of all T3 contests is here. The current round, the Vertical Horizontal one, is here

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