John C Hansen
  • Saint Charles, IL
  • United States
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Thrust stand for the entire multirotor

Started Apr 12 0 Replies

Are there any thrust stands that evaluate the lifting capabilities of the entire multirotor, and not just one motor/prop combination? Are the thrust characteristics such as efficiency of one motor…Continue

Tags: Efficiency, Props, Prop, Propellers, Motors

What Does Blade Flapping Mean?

Started Mar 9 0 Replies

After reading the following paper, I would appreciate some help understanding what "Blade Flapping" means.…Continue

Tags: Blade Flapping

How much More Thrust Is Produced By A Shrouded Propeller Compared To An Unshrouded Propeller When the Power Remains Constant?

Started Mar 9 0 Replies

There may have been more than one discussion of shrouded props, but after reading the threads and a great deal of the reference material on prop design, I am more interested in a variation on…Continue

Tags: Propeller, Shrouded

Tricopter vs Quadcopter vs Hexacopter

Started May 2, 2017 0 Replies

When thinking through the three different designs, I am pondering what would be the desirable traits of a Tri, Quad, or Hex, if the overall flight capability of each were the same in terms of the…Continue

Tags: Drone Design, Hexacopters, Tricopters, Quadcopters

 

John C Hansen's Page

Latest Activity

John C Hansen replied to Drone-University.com's discussion Is full throttle better for the ESC then 75% or 50% throttle ?
"I am fascinated by the idea that an ESC has a cooling system. Where did you read this?"
Jul 24
John C Hansen commented on Arnaldo Santos's blog post New personal UAV BlackFly Opener
"I think we are watching a time-distorted video. All of the video clips appear to me to be slowed down to leave the impression of ultra-smooth flight and landing. If we could be sure that the video is being shown at an accurate speed, this truly is…"
Jul 20
John C Hansen posted a discussion

Thrust stand for the entire multirotor

Are there any thrust stands that evaluate the lifting capabilities of the entire multirotor, and not just one motor/prop combination? Are the thrust characteristics such as efficiency of one motor the same when it is installed in the UAV with all the other hardware that are on the support arm of the UAV?See More
Apr 12
John C Hansen replied to Johnny W. Brewer's discussion Question about dihedral.
"@Coastwise, No, nothing new. I wrote to the authors of the report I mentioned earlier. They had not evaluated the theoretical impact on the efficiency and flight time. I am preparing to do some of my own testing, but the design work is going slow…"
Mar 18
John C Hansen replied to Karan Chawla's discussion Thrust Vector
"Gary McCray, I have searched the internet extensively on these two concepts of propeller dihedral and propeller twist, and I am unable to find any testing results or research that addresses the question of the impact on efficiency of either one. The…"
Mar 16
John C Hansen replied to Johnny W. Brewer's discussion Question about dihedral.
"I know this is an old discussion thread, but I have recently found a research report from 2017 on the math involved here: A Unified Approach to Configuration-based Dynamic Analysis of Quadcopters for Optimal Stability…"
Mar 13
John C Hansen posted discussions
Mar 9
John C Hansen replied to Beat Color's discussion Best Drones for Real Estate Photography
"Thanks for posting this. I am curious about the "smallest" autonomous flying course that can be flown. When a manufacturer says they can fly a course, they are often doing this for large tracts of land, or following a road, river, or power…"
Mar 7

Profile Information

About Me:
I am a licensed home Inspector in Illinois with experience as a private pilot. I also have a limited amount of experience building model RC planes and assembling electronics on PCBs.
Please tell us a bit about your UAV interest
I am looking to build a task-specific drone that is designed to do inspections of roofs without the need for ladders and actually walking the roof. I am looking for the optimum flight controls and camera sensor / lens that will make roof inspections safe and result in quality photographs that will be included in my inspection reports. Video capture is not a priority, and speed and distance traveled is also not part of my criteria.
Hometown:
Saint Charles, IL

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