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DJI Spark - Tripod Mode
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<blockquote data-quote="suprPHREAK" data-source="post: 58080" data-attributes="member: 1505"><p>This is entirely wrong.</p><p></p><p>You get longer flight time when moving due to aerodynamics of forward flight. Hovering is your least efficient on power. This is why DJI advertises 16 min flight time @ 20kph, but 15 in a hover.</p><p></p><p>What you falsely assume is that the motors are going full bore at all times to achieve the fast flight. This is untrue. Once the Spark reaches its maximum lean (45 degrees) the motors throttle back to maintain that angle, where then the thrust vector is what accelerate the drone. When the speed reaches its maximum, the motors throttle back even more to maintain that speed.</p><p></p><p>Reality is, the overall difference in battery life will be minimal. Lots of people getting 13 mins in real world conditions in Sport Mode, so it does NOT consume "40-50%" more battery per distance. All helicopters, especially with fixed pitch props like drones, have incredibly inefficient aero at all times. That is the overriding factor, not outright speed.</p></blockquote><p></p>
[QUOTE="suprPHREAK, post: 58080, member: 1505"] This is entirely wrong. You get longer flight time when moving due to aerodynamics of forward flight. Hovering is your least efficient on power. This is why DJI advertises 16 min flight time @ 20kph, but 15 in a hover. What you falsely assume is that the motors are going full bore at all times to achieve the fast flight. This is untrue. Once the Spark reaches its maximum lean (45 degrees) the motors throttle back to maintain that angle, where then the thrust vector is what accelerate the drone. When the speed reaches its maximum, the motors throttle back even more to maintain that speed. Reality is, the overall difference in battery life will be minimal. Lots of people getting 13 mins in real world conditions in Sport Mode, so it does NOT consume "40-50%" more battery per distance. All helicopters, especially with fixed pitch props like drones, have incredibly inefficient aero at all times. That is the overriding factor, not outright speed. [/QUOTE]
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DJI Spark - Tripod Mode