Fred 453 Posted April 30, 2013 Share Posted April 30, 2013 Perfect for a tiny quadrotor! I'd be very impressed if you could build one. In fact I'll bet you as much gold as it can lift that it won't get off the ground! Quote Link to post Share on other sites
chicken 630 Posted April 30, 2013 Share Posted April 30, 2013 I'd be very impressed if you could build one. In fact I'll bet you as much gold as it can lift that it won't get off the ground! You're probably right, but what about a tiny hovercraft? Quote Link to post Share on other sites
abecedarian 330 Posted April 30, 2013 Share Posted April 30, 2013 You're probably right, but what about a tiny hovercraft?Hovercraft + those motors mounted on servo output shaft = vectored thrust? Quote Link to post Share on other sites
bluehash 1,581 Posted April 30, 2013 Author Share Posted April 30, 2013 Hovercraft + those motors mounted on servo output shaft = vectored thrust? I think we can fab a rectangle PCB just for this.Pic servo for thrust. Quote Link to post Share on other sites
chicken 630 Posted April 30, 2013 Share Posted April 30, 2013 I think we can fab a rectangle PCB just for this.Pic servo for thrust. A PCB might be too heavy. Plugging 6x3cm surface area, 1mm air gap and 6g weight into an online hovercraft calculator says we need about 35 Pa air pressure. http://www.hoverhawk.com/lcalc.html That number grows linearly with weight. However required pressure decreases with more surface area. Assuming static pressure is the relevant spec: The mightiest MightyMini fan UB5U3-500 at 30x30mm and 2.5g delivers 88.2 Pa. The 8x8mm fan in the original post only delivers a paltry 3 Pa at a weights of 0.45g. In-between models like the 17x17mm, 0.91g, 40 Pa blower UB3H3-700 look more promising. bluehash and abecedarian 2 Quote Link to post Share on other sites
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