Longer Midskirt for Sripol Hovercraft

thingiverse

Just a quick edit of the midskirt makes it easy to add another midhull and lift motor to the hovercraft. Printing one of these, another midhull and another lift nacelle allows me to drop in another motor. I've not built it yet, but the idea is to add another counter-rotating lift motor to counteract the yaw induced by the single lift motor's torque. Then mixing the lift channels into the rudder channel gives more yaw authority when moving slowly or not at all. It'll also be interesting to see if it's possible to move lift from front to back to balance the craft. With a 4s 5200mah battery hanging off the front of mine, it's quite nose heavy. This should also give us the option to mount the battery mid ship instead of on the nose. I'm not sure which way I want to mount the second midhull - there are two options pictured. Since the lift motor is not centered in the midhull, we can place them close together or further apart. I think further apart will give more yaw authority since the moments are further from the center of the craft? Adding further complication, you can decide which way you want the skirts to glue to each other, changing the position of the air blowing straight down. In some orientations, you get 5 holes with the center most being tiny. In others, you get a larger center hole - it's up to me! How I Designed This I stretched the midskirt along one axis to match the length of the midhull. The glue joints of the skirt don't match the glue joints of the hull - this is intentional.