More Throttle Control progress

Under software control, Luke has demonstrated opening and closing the throttle +/- 10 degrees. This 'dithering' action is made using a simple algorithm and can be customised so as to prevent the super-cold liquid oxygen ball valve from sticking, prior to launch.





Luke's work is advancing nicely with a PCB layout for throttle control hardware. We'll attempt to make the make the board dimensions and positions of the mounting holes identical between the Rutex R2020 and the throttle control board, so they can be stacked together making them more space efficient.





After analysing design proposals, Roy suggested providing two sensing potentiometers for valve positioning. This would provide redundancy in case one is damaged and increase valve position accuracy when the results of both are combined. Roy's proposal is to have the two cams, which are connected to the throttle position sensing potentiometers, offset by 45 degrees. Nice throttle control work being done Numbatters!