Hélice quadri-pales orientables

thingiverse

Here is a remix of Konchan77's quadruple-directional propeller for turboprops (https://www.thingiverse.com/thing:3014536) that actually works. Its original version with straight gears won't function; you need to use bevel gears instead. This remix uses bevel gears and an integrated blade orientation control system within the propeller cone. The cone's tip serves as a control knob that can be rotated in either direction to achieve the desired blade angle of incidence - from feathering to thrust reversal. The entire assembly consists of three parts: - The rear block of the grouping cone, which houses: + Blades with their bevel gears. + A tapered sleeve wheel and its ball bearing. + A rear plate attached to the turboprop's PV output shaft. - The central block, containing the blade orientation mechanism made up of: + A double spiral ramp sleeve for the bevel gear (the part that emerges from the rear block). + A piston with two guide bearings. - The front block, comprising: + An end cone that rotates to orient the blades. + A lead screw. Assembly will proceed in this order: first, attach the blades; next, add the rear block and secure it to the turboprop if necessary; finally, combine the central block with the front block. We'll explore this further in the "Assembly" section. Please note that precision is crucial here. Many parts require adjustments to 1/10mm accuracy. This demands perfect printer calibration, finely tuned settings, and high-quality filaments. Like Konchan77's turboprop production, this assembly isn't for beginners; it requires discipline and attention to detail. But the end result will be well worth the effort ;o)