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Spark cruising speed and image transmission.
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<blockquote data-quote="suprPHREAK" data-source="post: 31126" data-attributes="member: 1505"><p>Folding props allow for a smaller package, that is all. The way a Mavic Pro folds, with the motors at the ends of the body, needed them otherwise the props would extend beyond the body. Same with Spark. Mavic Air uses fixed props as its motors fold to the middle, allowing the props to fit along the side of the body. There is no advantage to folding props here.</p><p></p><p>2 vs 3 blade props is an issue of efficiency. When a prop spins, each blade creates a wake in the air. Cutting a blade through that wake will require more effort to get the same lift as cutting through clean air. In the situation that most DJI products are used (hover, slow speed), a 3-blade prop would have each blade cutting through the wake of the blade ahead of it. Bad for performance and battery life. 2 blades is optimal as the following blade cuts the air after the wake has passed. 3-blade props will give you more lift and power, so long as they are moving forward fast enough to miss the wake ahead. This is why you see them on racing drones, or airplanes. </p><p></p><p>Some of this is probably not 100% correct in terminology, but the explanation works just the same.</p></blockquote><p></p>
[QUOTE="suprPHREAK, post: 31126, member: 1505"] Folding props allow for a smaller package, that is all. The way a Mavic Pro folds, with the motors at the ends of the body, needed them otherwise the props would extend beyond the body. Same with Spark. Mavic Air uses fixed props as its motors fold to the middle, allowing the props to fit along the side of the body. There is no advantage to folding props here. 2 vs 3 blade props is an issue of efficiency. When a prop spins, each blade creates a wake in the air. Cutting a blade through that wake will require more effort to get the same lift as cutting through clean air. In the situation that most DJI products are used (hover, slow speed), a 3-blade prop would have each blade cutting through the wake of the blade ahead of it. Bad for performance and battery life. 2 blades is optimal as the following blade cuts the air after the wake has passed. 3-blade props will give you more lift and power, so long as they are moving forward fast enough to miss the wake ahead. This is why you see them on racing drones, or airplanes. Some of this is probably not 100% correct in terminology, but the explanation works just the same. [/QUOTE]
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Spark cruising speed and image transmission.