"@Hugues - I think the answer is fairly clearly publicity. Since when would you hire a creative agency in Shoreditch (a hipster-central bit on London) to 'test prototypes'? I wonder who they actually got to do the quadcopter bit?"
"We did some UAV flying in Davos. A blimp built as a platform for computer vision 3D reconstruction of the terrain. This was a few years ago now and the team has disbanded but I put a few vids up in my YT channel. Beautiful place to fly.
"@ Daniel: no, that wasn't what I was talking about and that's not correct either. There is enough dynamic pressure up there for it to deploy, that is not a problem. Have a read up on the 'Added Mass effect' - Wikipedia is a good start.
"@Daniel have a go, especially at high altitude as was the aim of this project. I think you'll be unpleasantly surprised by some of the dynamic effects you encounter, for example the added mass effect in low density fluids making it very unstable. It…"
"I'm into high altitude projects too (check my profile). I wonder about the legality of 'flying' something back from balloon burst to land at some pre-defined spot. If it's an unpowered bathtub-lifting body type thing, I wonder if you coud argue that…"
"This is something I'm very interested in. Does the controller have a discrete set of possible known faults or does it just re-learn its model constantly? How quickly can it detect a fault? I think this fault tolerant stuff is where UAV research (and…"
"Fedex and a friendly supplier who will put a 'massaged' value of goods on the side. Never, ever, ever use parcelforce. Pay the premium for Fedex Express, it saves a lot of money in the long run and arrives faster. I say this having made lots of…"
"I don't think you will have any luck with trying to fly a parafoil at 100,000ft, because of a phenomenon called 'Added Mass' - when calculating the CoG and thus stability of a parafoil, which is usually somewhere in the rigging between the foil and…"
"R. Drone - getting your basic ham radio license will both answer your legal questions and teach you enough electronics to be able to answer your electronics question. It will also let you experiment with more radio power. It's quite easy, not much…"
"What Olivier didn't mention is that the MCU used on Paparazzi, the LPC2148, is an order or magnitude more capable than the Atmega168/328 used in the Ardupilot.
- 512kB Flash vs 16/32kB
- 32kB Ram vs 2kB/1kB
- 32-bit core vs 8-bit core
- 60 MIPS vs…"
I notice you're from London. If you want to come to one of our near-space launches here in Cambridge, you'd be most welcome. There are some people other than us working on near-space recovery systems too. Can I recommend the #highaltitude irc…"