Place a placeholder block on the end of the Swivel Joint.This is the point where you add Powered Wheels to increase the engine's power.Place two Propellers either side of it.The engine shown can be built in basic vanilla: The wheel turning the propellers attached to it makes the pivot beneath it rotate, thus rotating the two propellers in opposite directions. This method uses Newton's Third Law to its advantage, by using the unwanted torque to spin a second propeller. However, this does not scale very well the torque of more powerful engines can and will rip the machine to pieces. If the engines rotate in opposite directions, the torque of the two engines cancel each other out. This can be done with the symmetry tool, or it can be done manually (by pressing F while the mouse cursor is over a propeller (or wheel) flips its direction). The easiest way to counter the torque is to build another propeller engine rotating in the opposite direction on the other side of the aircraft. There are three engine architectures in Besiege which exist to solve this problem. In real life, this is countered with the rudder and trimming, but they usually aren't enough for the forces involved in Besiege. It is important to design extra space into your designs for this expansion.Ī simple wheel and propeller setup on its own usually has one big problem - the engine will spin the aircraft in the opposite direction (because of Newton's Third Law). More Propellers mean more thrust, but also slower top speed due to the added drag.Īt high RPMs, the Propellers will be pulled outward by centrifugal force.The further the Propellers (their centers, to be accurate) are from the spinning center, the more powerful it will be.A toggleable saw engine can be created by using a Powered Wheel with 0.1x acceleration. Normally, Circular Saws cannot be turned off.If NoBounds is used, this isn't a problem.
Multiple Powered Wheels or Circular Saws are required to get off the ground (up to around 10x total wheelpower, at which point the engine will explode). For vanilla, one wheel doesn't spin the engine fast enough.Ī video demonstrating a block-efficient propeller engine in basic vanilla.įor basic vanilla, where blocks cannot be rotated after the fact, using the correct propeller orientation (press R to change) is important - if the propeller is facing more perpendicular from the wheel instead of more parallel, it won't generate thrust at all!Īfter that, there are other considerations:
The top will not generate thrust, but the bottom will.
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