AIRCRAFT FUEL SYSTEM Russian patent published in 1999 - IPC

FIELD: aeronautical engineering; aircraft fuel systems. SUBSTANCE: aircraft fuel system includes service tank, front and rear additional tanks, fuel transfer and fuel feed pumps and fuel transfer pipe line. System is provided with valves for transfer of fuel from front and rear additional tanks. Each additional tanks is provided with fuel level jet sensor. Jet sensors are connected to command pressure pipe line. System is also provided with command selector switch. Control cavities of control of utilization of fuel from respective additional tanks of command selector switch are connected with respective control cavity of respective transfer valve. Above-plunger and under-plunger cavities of command selector switch are connected respectively with rear and front additional tanks through outlets of their jet sensors. Drain cavity of command selector switch is connected with one of tanks. Such construction of system provides for check of fuel level in front additional tank at which c.g. position of aircraft in the course of utilization of fuel from rear tank remains within rated limits. EFFECT: enhanced stability and controllability of aircraft. 2 cl, 1 dwg