Electronic Monitoring Revolution Per minute (RPM) of an Aircraft Engine Propeller

Abstract

The knowledge of R.P.M. of the aircraft engine propeller is very important to give the maximum help, during the various stages of aviation stage. Each stage of phases flight (take-off , cruise and landing) need acertain and accurate number of propeller revoluation per minute . This study concerns in electronic monitoring to the RPM of an aircraft engine propeller during flight. Control circuit was designed to connect a switch to the engine propeller which generates a pulse at a full round of propeller, then the pulse was passed from the switch to the computer in which the RPM is calculated using C++ program. The Electronic Circuit was designed As Follows:- Snap action was used as type of switch which produce a pulse by complete one cycle, then stored in SN74373, which was stored the pulse then pass it to the computer via a D-25 cable connected respectively with it’s features so chosen as a link between the computer and the switch. And when the pulse reach the computer, the computer starts account the number of RPM using the C++ program. So the monitoring of the RPM will be very accurate using the computer for it’s speed and accuracy.