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DroneSchoolopt

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DroneSchoolopt

MASTER YOUR MULTIROTOR

MASTER YOUR MULTIROTOR 13 PRO TIPS FOR BETTER FLYING, FILMING, AND MORE FUN BY TEAM ROTORDRONE When you get your first multirotor, you’ll probably have a barrage of questions about this new endeavor. Here at RotorDrone Magazine, we hear many different “getting started” questions, so we reached out to our experts for their solutions. John Reid Senior Editor, RotorDrone Magazine Gerry Yarrish Senior Technical Editor, RotorDrone Magazine Gus Calderon Contributor and columnist for RotorDrone Magazine Robert Rodrigues President of the Society of Aerial Cinematography Now that I have a multirotor where can I fly? This is probably the very first question people have when they get their first quad. Unless you live on a large open piece of property, you really don’t want to fly around your house because you might violate some privacy laws protecting your neighbors. Parks are a good place to fly but just be sure that you stay away from people and plan your flight on days when it isn’t crowded. Remote control flying fields or open areas with lots of room and few people around are really the best location for learning how to fly or testing out a new multirotor. -Gerry Yarrish I am learning to hover but I just can’t keep the quad in one spot for very long. Is there a technique for hovering? Hovering is an important skill to master when flying multirotors. There could be a couple of things that are affecting your ability to maintain a hover. The first is to make sure that your multirotor is at least three or four feet above the ground when hovering. The prop wash and airflow that kicks up from the ground will affect the stability of the aircraft, making it much more difficult to fly and maintain a hover. The second thing you want to do is take advantage of the controller’s ability to lock the multirotor’s position. This means when you fly in GPS mode and release the sticks, the aircraft will maintain its position in 3D space. If you are still having problems maintaining hover well in GPS mode, you may want to recalibrate your compass or make sure that you have enough satellites locked in to allow your GPS mode to function correctly. –John Reid ISTOCKPHOTO.COM 32 RotorDroneMag.com

In some locations I intend to fly I can’t obtain enough GPS satellites for a lock; how come? It is really important to have a basic understanding of the Global Positioning System (GPS) so it can be used properly for navigation and position hold on your multirotor. Since this is a space-based satellite navigation system, it is important that your GPS receiver have an unobstructed line of sight to four or more satellites to maintain three-dimensional positioning. When you arrive at your flying site, it is important to select a takeoff and landing area that is as far away as possible from structures. Satellite signals can reflect off larger nearby objects, such as buildings or cars, and cause the GPS antenna to receive an erroneous signal. This phenomenon is known as “multipath,” and it can cause large inaccuracies. You should also know that large reflective surfaces can affect the accuracy of your GPS receiver. For these reasons, it is very important to avoid flying your multirotor next to buildings or large structures. There are other situations that may affect the accuracy of your GPS signal that have nothing to do with the environment in which you are flying. For example, each satellite’s location relative to other satellites is an important factor in determining the signal’s accuracy. The geometry of the satellites is constantly changing and some advanced receivers actually display this value and warn you if the accuracy isn’t acceptable. Another factor to know is that when a satellite is low on the horizon, the signals must travel a greater distance through the atmosphere, resulting in lower signal strength and delayed reception by the GPS receiver. Position accuracy is increased by satellites that are at least 15° above the horizon. Multirotors that have telemetry systems that indicate the number of satellites received have an added safety benefit. Whenever you are flying, keep in mind that it is possible to lose the GPS signal, so it is important to be able to safely land your multirotor without the aid of satellite navigation. Practice this on a regular basis to become a more safe and proficient operator. –Gus Calderon Flight Success 33

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