"No idea about JSTOR, sorry. For the charger, I dont think so. From what I see, this charger is actually identical to the B6, except that there are 4 of those in the same box."

"@mike yes I do have one of these charger -- it's very nice.
 
More info on the collision avoidance strategy they use: http://infoscience.epfl.ch/record/153202?ln=en (full text unfortunately not free). Content should also be in this…"

"@mike quad-charger :)"

"@john they used PXA270-based Colibri boards for this but they are now migrating to Gumstix Overo."

"Except that it predated the Vapor by several years..."

"@Squalish: at 3.5k USD, though cheaper, Photoscan Pro is still in the same price category than EnsoMOSAIC...."

"@Mike can you elaborate on the low-cost (<5k) option to create georeferenced orthomosaics?"

"For a given airframe, C_L is bounded, i.e. there is no way to increase lift beyond some maximum value (unless you increase significantly the speed, which requires a significant scaling of the propulsion system, which will impact m_0, etc.).…"

"Is there a way to get the a single-line PPM stream out of this receiver?"

"Can you tell us about the underlying sensor? Is it a AVAGO mouse chip or a CCD with custom processing? Or something else?"

"Interesting work. Any chance to have the same flights with the the camera pointed downward? It would better illustrate the lateral stabilisation achieved by the optic flow sensors."

"In my experience, if you can spare another line, it's much easier to pull the reset pin every 6 minutes. It barely affects the communication and it resets the duty cycle limit."

"That's 6 minutes. Any sensible flight is going to be longer so this will be a problem. For example, the 6 minute transmission time per hour is hardcoded in the XBeePro 868. It wont transmit anymore than that, so that makes it pretty much unusable…"

"Re: legal issue, does it mention a 10% or 1% maximum duty cycle? Because it's a very common restriction in this kind of frequency for anything above 10mW."

"Interesting. What would be the RF baudrate? How legal do you expect it to be in Europe (regarding the RF laws)?"

"Just to put things straight, since Dec 1st, 2009, all UAVs must remain in LOS in Switzerland, down to - and including - 0g MTOW. Below 500g, there are however no location restrictions, i.e. you can fly nearby airfields etc, which you can't with…"