Devin Johnson-Kinlaw
  • Male
  • San Antonio, TX
  • United States
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Devin Johnson-Kinlaw's Discussions

Regenerative Braking

Started this discussion. Last reply by bGatti May 13, 2012. 1 Reply

I came across a thread which reminded me of regenerative braking. Not sure how much this relates with UAVs, but it's a fair topic to review.In my mind, mechanically storing momentive energy when…Continue

Conventional Aerodynamic Constraints On Aircraft Today: Problems > Solutions

Started this discussion. Last reply by Devin Johnson-Kinlaw May 17, 2012. 11 Replies

First of all, let me start by introducing myself, as I am publicly very new to DIY Drones, though have been following my obsession since I can remember. Unmanned Aerial Vehicles came into focal range…Continue

 

Devin Johnson-Kinlaw's Page

Latest Activity

infinityPV commented on Devin Johnson-Kinlaw's album
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PV Cells for Solar UAV (Vegas Buzzard)

"That's a pretty nice.. In case you want to explore some lightweight & flexible (although less efficient) solar cells prepared on plastic foil, then check out http://infinitypv.com/infinityopv/infinitypv-foil"
Mar 24, 2015
electrolics inc commented on Devin Johnson-Kinlaw's group Vegas Buzzard Solar UAV Dev
"this project must have been completed by now, how did it go? any video? build? flight report? specs?"
Nov 26, 2013
Devin Johnson-Kinlaw posted a status
"Originally designed to take on about 2 lbs of li-ion batteries, or about 180 W/hrs of energy storage. Max weight would not to exceed 2.8lb."
Aug 13, 2012
Devin Johnson-Kinlaw posted a status
"Of course, the current airframe requires a structural reinforcement spar at the leading and trailing edge and clear monokote."
Aug 13, 2012
Devin Johnson-Kinlaw posted a status
"Total unsheeted airframe weight without 152 photovoltaic cells is 77 grams. Weight of 152 PV cells is 22 grams. Total airframe weight = 99g."
Aug 13, 2012
Devin Johnson-Kinlaw posted photos
Aug 13, 2012
abdulla ali alneyadi commented on Devin Johnson-Kinlaw's blog post Looking to Sell Partially Finished Solar Powered Glider Airframe
"plz Devin , check your email , almost i sent 2 email !!"
Aug 11, 2012
Devin Johnson-Kinlaw commented on Devin Johnson-Kinlaw's blog post Looking to Sell Partially Finished Solar Powered Glider Airframe
"Please E-Mail me with a request for recent photos."
Aug 10, 2012
Devin Johnson-Kinlaw posted a blog post

Looking to Sell Partially Finished Solar Powered Glider Airframe

Lately, this project of implementing solar cells into a homemade 4.68 meter glider platform has been neglected, though have considered to complete it to one's needs.If someone is interested in purchasing this aircraft fully finished, it will combine at least 152 quantity 2 cm by 4 cm monocrystalline silicon solar cells(rated @ <18%) fully or only partially integrated into the airframe.…See More
Aug 10, 2012
Devin Johnson-Kinlaw commented on Andreas M. Antonopoulos's page Testing the dronecell or other GSM modem in the group Telemetry over cellular IP
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"Andreas, may I ask what the hold up is with DroneCell code debugging? I'm willing to get onboard if you have any recent updates on the improving code, for APM2.0 especially. Thanks_"
Jun 8, 2012
Devin Johnson-Kinlaw replied to Devin Johnson-Kinlaw's discussion Conventional Aerodynamic Constraints On Aircraft Today: Problems > Solutions
"I know. Wait for the model. Still ordering CF CNC parts. Also, need to employ several formulas for proof in the design process. I'll bring this into scope later. Expect EXP1 to be finished by around June 8th."
May 17, 2012
Andrew Rabbitt replied to Devin Johnson-Kinlaw's discussion Conventional Aerodynamic Constraints On Aircraft Today: Problems > Solutions
"Hmmm...  too many big words."
May 17, 2012
Devin Johnson-Kinlaw replied to Devin Johnson-Kinlaw's discussion Conventional Aerodynamic Constraints On Aircraft Today: Problems > Solutions
"I will be updating experiment 1 in several weeks. Basically, two adjacently spaced smaller static carbon fiber rings will repel a larger dia carbon fiber ring using surface flush Neodymium-Iron-Boron magnets of ultra-small size. This will simulate…"
May 16, 2012
bGatti replied to Devin Johnson-Kinlaw's discussion Regenerative Braking
"It's a great idea: in flight it must be called regenerative soaring - and used to convert thermals into stored energy. The challenge I believe is redesigning the ESC so it can achieve this modality."
May 13, 2012
Pete Alberico left a comment for Devin Johnson-Kinlaw
"Hi Devin sorry for the delay in getting back you. I'm currently "experimenting" with a process that will allow me to print wing ribs on my 3d printer and cover them with depron foam (plug). I'll let you know how that turns out.…"
May 13, 2012
Devin Johnson-Kinlaw posted a discussion

Regenerative Braking

I came across a thread which reminded me of regenerative braking. Not sure how much this relates with UAVs, but it's a fair topic to review.In my mind, mechanically storing momentive energy when braking is practically most efficient as one conversion is required with few direct losses, whereas adding electrical conversion is less kinetically direct (Momentum > Mechanical > Electrical > Mech > Force).Also, attaining maximum energy requires that kinetic momentum be converted to…See More
May 13, 2012

Profile Information

About Me:
Personal interests mainly encompass UAVs of airplanes. Seldom do I come to find 'copters of any type wonderful {Strictly AirPlanes}.
Please tell us a bit about your UAV interest
Airplanes are my aircraft.
Hometown:
San Antonio, TeXas

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Looking to Sell Partially Finished Solar Powered Glider Airframe

Posted on August 10, 2012 at 11:27am 2 Comments

Lately, this project of implementing solar cells into a homemade 4.68 meter glider platform has been neglected, though have considered to complete it to one's needs.

If someone is interested in purchasing this aircraft fully finished, it will combine at least 152 quantity 2 cm by 4 cm monocrystalline silicon solar cells(rated @ <18%) fully or only partially integrated…

Continue

Comment Wall (1 comment)

At 10:30pm on May 13, 2012, Pete Alberico said…
Hi Devin sorry for the delay in getting back you. I'm currently "experimenting" with a process that will allow me to print wing ribs on my 3d printer and cover them with depron foam (plug). I'll let you know how that turns out. If you are a builder, here are a some links you may find helpful:

http://www.rcgroups.com/forums/showthread.php?t=277901&highlight=lead+sled+alley

http://www.rcgroups.com/forums/showthread.php?t=393964&highlight=lead+sled+alley

http://www.rcgroups.com/forums/showthread.php?t=155164&highlight=lead+sled+alley#post1343045

http://www.rcgroups.com/forums/showthread.php?t=165116

Hope this info is helpful.

Pete

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