Duffy
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Duffy's Discussions

Just another 5 hour endurance full electric VTOL

Started this discussion. Last reply by Graham Dyer Aug 14. 11 Replies

We VTOLized the Raptor E1, at the same time we further optimized the power plant to achieve 50-80 Watt power consumption at cruise speed at 16.5 m/s with 3.5 Kg payload. All in all very happy with…Continue

Number of channels

Started May 9, 2016 0 Replies

I am operating the 433 MHz radios at a narrower range ~2MHz. I was wondering what was the right way to choose the number of channels based on frequency width of transmission Thanks Continue

Arduplane with second pixhawk

Started this discussion. Last reply by James Apr 3, 2016. 4 Replies

Would like to setup a second pixhawk that would crash the plane (full down elevator) if for whatever reason the plane has deviated more than 100 m buffer from the geofence set on the main…Continue

29inch Quad U8 motors

Started this discussion. Last reply by Elossam Mar 18, 2016. 1 Reply

A small clip from the high efficiency quad using 29 inch 3 blades props running of U8 135KV motors and 6S batteries. The setup delivers ~35 min with 16,000 6S lipo and 1.8 Kg useful payload. More…Continue

 

Duffy's Page

Latest Activity


Moderator
Graham Dyer replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"How's the 5 hour flight coming along?"
Aug 14
Jay Case replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Ah, It all makes sense now. What voltage"
Jun 26
Duffy replied to iftikhar khan's discussion i need drones desginer
Jun 25

Moderator
Gary Mortimer replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Ok Duffy PM me the place and we can do that!"
Jun 25
Duffy replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
Jun 25
Duffy replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
Jun 25
Duffy replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Without the VTOL conversion the standard system is capable of more than 6 hours with the same battery. But as I said the two most important points other fixed wing UAVs are not getting the same performance is 1) airfoils 2) wingloading . This…"
Jun 25

Moderator
Graham Dyer replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"2+ hours with LiPo's takes a bit of doing, with Li-Ion it's a bit easier but 5 hours is a real challenge especially if it's going to do a VTOL takeoff and landing. So I'd suggest doing a documented duration test, and post the log…"
Jun 24

Moderator
Gary Mortimer replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"As regards proof, this is how we did it in the case of one manufacturer, I sent somebody to stand on an airfield to watch a six hour flight. We can do that again!"
Jun 24

Moderator
Gary Mortimer replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Does it not contain your partner's fuel cell?? https://www.suasnews.com/2015/09/uk-singapore-collaboration-prepares-for-record-300km-hydrogen-fuel-cell-uav-flight/ I'm interested in what you say about aerodynamics as are not all of those…"
Jun 24
Duffy replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Can't say I agree there is anything ambitious about this, it consumes 50-80 Watt at level cruise at 16.5 m/s at 3.5 Kg payload.with 200 Watt during turns But you are right we should back this up.   Would people be happy with a…"
Jun 24

Moderator
Graham Dyer replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Why not put the motor wires inside the tube arms? Looks really tacky and unprofessional with them hanging loose with just the odd cable tie.5 hours duration on LiPo's is a pretty ambitious claim, do you have a log or video to back that up?"
Jun 24
Duffy posted a discussion

Just another 5 hour endurance full electric VTOL

We VTOLized the Raptor E1, at the same time we further optimized the power plant to achieve 50-80 Watt power consumption at cruise speed at 16.5 m/s with 3.5 Kg payload. All in all very happy with the conversion. If anyone interested we are taking pre-orders to setup a manufacturing line with an aerospace composite partner company in England UK. This would allow us to release a high quality full composite platform at an accessible price tag. Check …See More
Jun 24
Duffy replied to Nicholas Witham's discussion Why are we starting to use companion computers? in the group Companion Computer Working Group
"Nicholas,  Pixhawk or any other autopilot hardware is your navigation controller, as you know this provides the basic functionality of stabilizing your system andGPS/altitude/sonar based waypoint navigation.  This is great but you can do…"
Feb 13
Duffy commented on Chris Anderson's blog post Winners of Airbus cargo drone competition announced
"Possibly the most energy efficient way of doing this is V-22 type tilt-rotors, anything else reduces gravimetric energy density of the system. The DHL delivery drone is maybe the best current alternative at the moment ?  The Zelator could…"
Jul 25, 2016
Duffy posted a discussion

Number of channels

I am operating the 433 MHz radios at a narrower range ~2MHz. I was wondering what was the right way to choose the number of channels based on frequency width of transmission Thanks See More
May 9, 2016

Profile Information

About Me:
Know some python, good with AutoCAD and designinig new airfoils. Fixed-Wing specialist. Aerial Survey and Aerial photography.
Please tell us a bit about your UAV interest
New comer, need help,

Duffy's Blog

World's first hydrogen pellet drone flight

Posted on February 5, 2016 at 10:00am 11 Comments

A demanding project for the platform in delivering maximum efficiency, and after some lamination schedule and power setup optimizations the Raptor E1 by RaptorUAS delivered the first ever hydrogen pellet powered drone flight.…

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Big thanks to the Team!

Posted on November 21, 2012 at 5:00am 6 Comments

Just wanted to say thanks to the developers bringing this product out. I love it.

 Today I felt lucky and went to the field for my second ever flight with ardupilot wired to a custom made fixed wing platform for some testing. Since the first flight I connected the pitot and the Xbee at 2.4 GHz for telemetry.

 I was feeling that lucky that decided to try the auto take off, On my previous only flight I only tried manual, circle mode and RTL which seemed to work…

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