"In the second WW, the Germans were using fuel injection in their aircraft. However, it is not a must for high altitude flying. Getting more oxygen into an internal combustion engine is the real problem at high altitudes."

"Survey the number of VTOLs out there. The number is very small compared to helicopters or even multi-rotors. VTOLs are just complicated with all the extra moving parts to provide vertical thrust, vectoring of that thrust, and a control system that…"

"GPS Position Hold is not too bad in 5 to 10 knot wind but it's far from what a Naza equipped vehicle can do. Before you copy the PIDs from the video, you may want to read the GPS setup from EOS Bandi. I need to re-read it myself. Also, an…"

"That's a nicely done frame you have there. Are the landing gears machined aluminum or sheet metal?
My MultiWii multirotor is a tricopter using a Spanish Spidex frame they no longer carry from quaternium.es.  It's AUW is 3 lb 10 oz (1.6 kg) where…"

"I'm getting similar results with the MK3329 GPS module that comes with the HK MultiWii Pro. GPS hold works but it bobs up and down in the wind. RTH appears to work but the small fields I fly at constrains the testing. Baudrate is 56k at 10hz. I…"

"Is your MW Pro config.h file configured for the Ublox i.e. baud rate and data rate? I believe 38.4k or 56k baud rate at a 5hz data rate is the right configuration for this GPS. If not, you'll need to download Ucenter from the Ublox site to configure…"