"Is it possible to use an IC engine in a 600 / 700 heli for decent quality AP and avoid the issues of vibration and smoke?
Never tried it, but I have an electric but hauling suitcases of lipos around is hard work. Point me in the right direction if…"
"This question keeps coming up. Perhaps there ought to be a multicopter design FAQ somewhere. You're right, of course - there's no getting around the 10X + energy density advantage of internal combustion engines and chemical…"
"Wow, that's a tall order. Very tall. You will have to use very low kV motors, with large props. The frame would have to be EXTREMELY light weight, and the camera will have to be very very small.
If you want to carry a 1550…"
Hey,I want to ask expert advise on a long endurance (about 40 minutes) heavy lifter (1550gm camera) multi-rotor platform.Can you speculate or advise me what would be the good starting point of building a multi-rotor (quadrotor, or hexacopter or octa copter) to carry 1550gram camera for about 40 minutes flight time?Can you advise me how to select motor and propeller for such a platform?Thank you.See More
"You're starting from a good place, knowing your target weight. This is the most important thing for designing an efficient (read, longer flight times) aircraft.
Here are a few tips:
* fewer blades, more efficient
* 1 blade is…"
Hey,Take off Weight (TOW) and flight endurance are inversely related attributes for most of UAV platforms.I want to build a multi-rotor UAV platform capable of lifting 2.5kg payload (+ weigh of platform+batteries+electronics etc) and try to hover at as long as it can (in a calm day). In order to design and build such a platform I need to understand (or educated guess) about factors effecting the lift and endurance such as propeller, motor, ESC etc.Do you know any website that can help to…See More
"Is it legal (in US, Europe, NZ and in Australia) to use cellular network from an airborne (manned or unmanned) platform?
Here is a statement I've found "According to current U.S. Federal Aviation Regulations, the use of cell phones on any…"
"No, unless you want to kill the battery. There are no other batteries that can do what you want, it's the holy grail of batteries, think of the cell phones and laptops/tablets that would benefit, millions and millions are being spent on…"
We can calculate the UAV heading (flight directions) from multiple consecutive GPS readings if the UAV is moving. However, for a hovering, this method would not work and we may need a magnetic compass or a magnetometer (like MicroMag 3-Axis Magnetometer from SparkFun).
GPS receivers (without DGPS or WAAS corrections) do not provide accurate altitude information. In order to maintain accurate altitude, a pitot-static may be used.
Is there anyone in this DIY Drones network who used a pilot-static sensor suite for his/her Ardupiloted UAV?