About

Gender

Male


Location

Leningradskaya


About Me:

UAV hobbyist


Please tell us a bit about your UAV interest

Interested in multicopters.


Hometown:

St.Petersburg


Activity Feed

Dmitry Prokhorov replied to Kaan Ozgen's discussion Quadcopter with 1 hour flight time
"Hi,

Antonov was soviet company but now it is Ukrainian. Love their planes and it's sad to know we are not in a same team anymore. That's for Mi-26 it's real giant with really specific market niche. So I totally agree with your point, every vehicle…"
Oct 19, 2016
Dmitry Prokhorov commented on Chris Anderson's blog post RocketSpace/AT&T report on the future of drones
"It seems they missed projection #11:"11) Immature and prohibitive regulation laws will diminish evolution of drone industry for decades."
IMHO it is most important one."
Oct 8, 2016
Dmitry Prokhorov commented on Dmitry Skotnikov's blog post GET distant wireless power solution for drone industry
"I wish you a great success, but I have to say everything you have shown so far doesn't prove anything. It looks very much like "we have some special and a very secret magic".
It's not a big deal to hover inside of power cord loop. But powering a…"
Sep 20, 2016
Dmitry Prokhorov commented on Dmitry Skotnikov's blog post GET distant wireless power solution for drone industry
"BTW, having in mind my so-many-year-ago experiments and size of coil on your copter I bet you are using frequencies something about 100kHz to 1MHz :)"
Sep 20, 2016
Dmitry Prokhorov commented on Dmitry Skotnikov's blog post GET distant wireless power solution for drone industry
"typo happened, read please as: "it may help to deliver some power""
Sep 20, 2016
Dmitry Prokhorov commented on Dmitry Skotnikov's blog post GET distant wireless power solution for drone industry
"Thank you for provided answers, Dmitry,
Few more questions:
How it is possible that "mounting transmission cord at a height of 1 meter or so from the ground/big metal objects" is preventing it from power loss and the same time it is "in general you…"
Sep 20, 2016
Dmitry Prokhorov commented on Dmitry Skotnikov's blog post GET distant wireless power solution for drone industry
"One more question..
3) What are you going to do with power transmission loss due to accidental conductors that may happen to be located inside of huge powering loops? What about eddy currents in a wet ground, metal roofs and other constructions?"
Sep 20, 2016
Dmitry Prokhorov commented on Dmitry Skotnikov's blog post GET distant wireless power solution for drone industry
"Hi Dmitry,

1) To fly copter inside of the powering cord loop is definitely not the same as to fly it at 10-20 meters over or aside of. You will have a huge power transmission loss. Do you have the same demo with a copter that hovering at 10 meters…"
Sep 20, 2016
Dmitry Prokhorov replied to Artem Kholodkov's discussion Horyzont on PIXHAWK start drifting in PIXHAWK
"Hi Artem, there are two 3V3 regulators:


U603 MIC5332 (on a sheet 5) that provides FMU-VDD_3V3 and VDD_3V3_SENSORS
U1002 MIC5332 (on a sheet 10) that provides IO-VDD_3V3 and VDD_3V3_SPEKTRUM

Why do you decided your problem is about 3.3V regulator…"
Sep 18, 2016
Dmitry Prokhorov commented on Chris Anderson's blog post Lidar Lite back with V3 after Garmin aquisition
"Hi @Chris, what about Pixhawk2 ?"
Sep 15, 2016
Dmitry Prokhorov commented on Zubax Robotics's blog post PX4 Sapog - advanced open source ESC from the PX4 team
"$79 couldn't be a problem for professional grade FOC-ready ESC with redundant UAVCAN, low latency, status feedback and so on. That's great. But.. 4S and 20A limits could not be considered appropriate for professional grade device. Guys, are you…"
Aug 20, 2016
Dmitry Prokhorov commented on Dmitry Prokhorov's blog post 3D printed addon set for DJI F550
"I performed flight tests and have to admit that flight time is definitely bad, it is about 8 minutes with 3300 mAh battery used. Copter weight w/o battery is about 1710 gm, including 146 gm of landing gears and 45 gm of cctv camera. So it seems…"
May 6, 2016
Dmitry Prokhorov commented on Gary Mortimer's blog post FAA Administrator Makes Two Major Drone Announcements
"@Rob it is well known that any problem can be resolved by forming new committee.. Any but one: "too much of committees" ))"
May 4, 2016
Dmitry Prokhorov replied to Randy's discussion Pixhawk 1MB flash limit
"Could you pls to explain what exact components are missing? How you can see it?"
May 4, 2016
Dmitry Prokhorov replied to Dmitry Prokhorov's discussion Solution proposal for PixHawk IMU2-related BAD ACCEL HEALTH
"You need the wire named VDD_3V3_SENSOR. Here is schema PDF file for 2.4.5"
May 4, 2016
Dmitry Prokhorov replied to Dmitry Prokhorov's discussion Solution proposal for PixHawk IMU2-related BAD ACCEL HEALTH
"You can do it anywhere, but it should be definitely the VDD_3V3_SENSORS wire. Not any other 3.3V wire.
As an example it could be performed this way"
May 4, 2016
More…