5 months ago


  • Text
  • Multirotor
  • Aircraft
  • Drone
  • Transmitter
  • Controller
  • Controls
  • Pilots
  • Receiver
  • Modes
  • Orientation
  • Droneschoolopt

I have no problem flying

I have no problem flying my quad until I start flying back toward me, then I get all turned around and lose control – please help! The issue is that when the multirotor is facing away from you, its controls are oriented correctly, but, when the drone is facing toward you, the controls are backward. There is really no easy way around this. You just have to practice flying your multirotor both going away from you and coming back toward you until you feel comfortable flying both ways. The best way to learn this is by flying a horizontal figure-8 in the sky, first clockwise and then counterclockwise. This maneuver will give you the skills you need to fly toward yourself from both the left and right. One issue related to this is when the multirotor is far away, you may have trouble figuring out where the front of the aircraft is. To solve this, use different color props along with colored tape or a brightly colored front booms to help you orient the aircraft in the sky at a distance. Some controllers have programming that allows the multirotor to be oriented from the takeoff point (which means it does not matter in which direction it faces; the control sticks remained oriented to the pilot). This prevents the backward control issues when the front of the aircraft is facing the pilot. You can fly in this mode at first until you feel comfortable, but it you should also learn to fly the aircraft in other flight modes. -John Reid When I store LiPo batteries between flights, can I keep them fully charged? Many guys get in the habit of recharging their LiPo battery packs after they fly, and this is ok if you are going to fly within the next day or so. Sometimes the weather deteriorates or you get busy and you are unable to fly for a week or more. When the batteries are stored fully charged, the voltage slowly decreases and the packs won’t be full for the next flight. Storing fully charged LiPo batteries (4.2 volts per cell) also reduces their life cycle and may lead to in-flight problems. It’s best to get into the practice of keeping your LiPo batteries discharged between flights to increase the pack’s longevity. Ideally, each cell should be discharged to its nominal voltage of 3.7 volts. If you go for a short flight and you won’t be flying for a few weeks, use the discharge cycle on your LiPo charger to bring the voltage down to 3.7 volts per cell. When temporarily storing or transporting the battery, don’t leave it in your car or direct sunlight. Always store batteries at room temperature, and carefully inspect your LiPo packs for swollen or damaged cells. Also, check the voltage of each cell prior to each flight. Look for any damaged or loose leads or connectors, broken shrink-tubing or other irregularities that may cause a short circuit and potential fire. Inspect the balancing connectors, too, as they are susceptible to damage due to their narrow gauge wire. Using a high-quality charger with an integrated balancer is a very important part of maintaining your LiPos and keeping them in good condition. While it may seem time-consuming, the effort will improve the safety and reliability of flying your multirotors. -Gus Calderon My multirotor seems to be vibrating a lot more lately. What can I do? Perhaps the leading reason that most multirotors have a vibration problem is due to the fact that the props have been damaged -- even a little bit -- and they are out of balance. When a prop is out of balance it tends to vibrate and because it is situated at the very end of a long arm/boom, that vibration tends to amplify throughout the multirotor. The best remedy is to periodically balance all four props and make sure that there isn’t any damage or and that they aren’t missing any pieces. If any are damaged or cannot be balanced, they should be discarded. Another possible cause for vibration could be a worn-out motor or a bent motor spline; both can produce vibration. If you balanced and/or replace all of the props and still have a vibration problem, look to the motors for the cause. –Gerry Yarrish When you’re learning how to fly a drone toward yourself, practice makes perfect. Depending on the flight mode, all the controls could be reversed when the drone is moving toward you. Adding a neutral density filter, like this one from Snake River Prototyping, to the front of your lens will reduce the shutter speed and eliminate jello ripples. My video has this wave in it at the sides of the picture – help! This is known as the “jello effect,” and it’s caused by the spinning props that create a harmonic vibration. Adding a camera gimbal -- which will have vibration-dampening attachments -- will help eliminate jello waves. An added bonus, your camera will be able to shoot very smooth video. Another solution is to use neutral density filters on the front of your camera. Available at most camera stores, these filters eliminate the wave by reducing the camera’s shutter speed. There is a nice selection for action cameras such as GoPros. –John Reid 34

I want to get into First- Person-View flying. What do you recommend? It is best to start by getting a lower end multirotor that comes with an FPV goggle setup. Some people get all the gear, try it out, and quickly realize it is not for them, then they have spent all that money for something they may not do again. Start out small and when you know you like it, move up to a bigger bird. Once you’re hooked, take the quad to a big open field and practice hovering. Get used to it and see just how far you are from the ground; looking through the goggles makes everything looks different. Getting the feel for distance is the first requirement for flying with FPV. People at first think they are way up in the sky when looking through the goggles but in reality the quad is only a few feet above the ground. Keep moving the aircraft higher and higher so that you know what the distance looks like through the goggles. Then slowly start flying forward. Practice moving and stopping and build on that. Before you know, it you’ll be speeding along with the rest of them. – Daniel Sandova First-Person-View is fun and exciting, but it does take some practice to master flying while you’re looking through goggles. Flight Success 35

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June 2013
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