About

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Male


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,


Activity Feed

Duffy posted a discussion
I have a Micasense -RedEdge-M for sale.https://www.ebay.co.uk/itm/332751767942 This is a demo item that was used for 5 demo flights in May. I would be willing to offer a discount to a user from this forum. BestTrias
Aug 28, 2018
Duffy posted a blog post
Having now worked for a few years on the development of the Raptor drone series I thought I share some thoughts on the design process and impact this has on performance. When initially started designing for this series of drones the priority matrix…
Jul 18, 2018
Duffy replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Hi Dale,

 The platform is not available for purchase right now, here is the latest video with take off and transitions https://youtu.be/kjujvE9UsIE

The actual price of the complete product will be somewhere between £19-24K, it is the nature of…"
Oct 10, 2017
Duffy replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Hi Hugues,

 General specs from this file: https://drive.google.com/open?id=0B8_BlgYnzOFGellNOUx5ekF6QzQ

 If you want to know our secret ingredient of long endurance here is some information for…"
Sep 3, 2017
Duffy replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"It is 6S Gen Ace

Thanks Jay Case said:
No it doesn't, just a 28,000 mah LiPo
Ah, It all makes sense now. What voltage"
Sep 3, 2017
Duffy replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Didn't manage to arrange this,

 got some transitions https://youtu.be/kjujvE9UsIE

The specs for the max endurance flying:

 Airspeed: 16 m/s
 Current consumption: 2-5 A (level flight)
 Total Payload : 3.65 Kg (battery inclusive)
 Prop: 20*10 with…"
Sep 3, 2017
Duffy replied to iftikhar khan's discussion i need drones desginer
Jun 25, 2017
Duffy replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Graham Dyer said:
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 25, 2017
Duffy replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Gary Mortimer said:
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!

OK, happy with that"
Jun 25, 2017
Duffy replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Gary Mortimer said:
Does it not contain your partner's fuel cell??

https://www.suasnews.com/2015/09/uk-singapore-collaboration-prepare...




No it doesn't, just a 28,000 mah LiPo



I'm interested in what you say about aerodynamics as are not all…"
Jun 25, 2017
Duffy replied to Duffy's discussion Just another 5 hour endurance full electric VTOL
"Graham Dyer said:
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.




Yes, agreed, this is the first conversion of the VTOL proto, so yes a bit rough
5…"
Jun 24, 2017
Duffy posted a discussion
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…
Jun 24, 2017
Duffy replied to Nicholas Witham's discussion Why are we starting to use companion computers? in Companion Computer Working Group
"I suspect Nicholas doesn't need to be told the benefits of companion computers, in fact he has already chosen one..."
Feb 20, 2017
Duffy replied to Nicholas Witham's discussion Why are we starting to use companion computers? in 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 a lot…"
Feb 13, 2017
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 possibly…"
Jul 25, 2016
Duffy posted a discussion
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 
May 9, 2016
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