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question about flying over concrete path
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<blockquote data-quote="Andre Levite" data-source="post: 90525" data-attributes="member: 10850"><p>Yes (and no). Quadcopters are also susceptible to vortex ring state. But DJI consumer drones mitigate the effect with <em>altitude hold and automated controlled descent when landing.</em></p><p></p><p>When the Spark is descending the downward facing sensors and altitude input temporarily freeze the descent a few feet from the ground. The aircraft then controls the rate of descent regardless of any additional downward joystick input from the operator. </p><p></p><p>I strongly suspect this feature was primarily implemented to avoid the inevitable hard landings by newbie pilots rather than VRS. Drones have pretty favorable weight to power ratios which make settling with power less of an issue to begin with. </p><p></p><p>If this feature wasn't standard the average drone would only last a few flights. VRS should be a non factor and hard landings should be rare when everything is functioning as designed.</p></blockquote><p></p>
[QUOTE="Andre Levite, post: 90525, member: 10850"] Yes (and no). Quadcopters are also susceptible to vortex ring state. But DJI consumer drones mitigate the effect with [I]altitude hold and automated controlled descent when landing.[/I] When the Spark is descending the downward facing sensors and altitude input temporarily freeze the descent a few feet from the ground. The aircraft then controls the rate of descent regardless of any additional downward joystick input from the operator. I strongly suspect this feature was primarily implemented to avoid the inevitable hard landings by newbie pilots rather than VRS. Drones have pretty favorable weight to power ratios which make settling with power less of an issue to begin with. If this feature wasn't standard the average drone would only last a few flights. VRS should be a non factor and hard landings should be rare when everything is functioning as designed. [/QUOTE]
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question about flying over concrete path