Research on the Altitude Control Device of a Mini-UAV Engine's Diaphragm Carburetor
Gao Pi-zhou · Flight Dynamics · 2006
Based on the analysis of meeting a demand of the UAV engine and the characteristic of the diaphragm carburettor of altitude supply fuel,we design a altitude control device to regulate the displacement of the needle valve by pressure difference.It effectually improves influence of the air fuel ratio along with the variety of altitude and enhances the altitude performance of the UAV-engine.The experiment results showed that the altitude control device could auto-regulate the variable of air fuel ratio along with variety in altitude,and it could improve the performance of the power and the fuel economy of the mini-UAV engine.At the same time it can increase the endurance time and the flying reliability of the UAV.