Abstract: A fuel treatment system for an engine includes at least two centrifugal separators for cleaning fuel oil for an engine, at least two variable feed pumps for supplying fuel oil to be cleaned to the centrifugal separators, respectively, and at least two separator control units configured to control the operation of the centrifugal separators and the speed of the variable feed pumps, thereby controlling the flow rate of fuel oil to be cleaned to the separators. The system further includes a system control unit, other than the separator control units, configured for receiving information from a unit in the fuel treatment system that is arranged downstream of the centrifugal separators or from an engine arranged to use the fuel that is treated by the system, and for sending operational requests to the separator control units based on the received information.

Abstract: A fuel treatment system for an engine includes at least two centrifugal separators for cleaning fuel oil for an engine, at least two variable feed pumps for supplying fuel oil to be cleaned to the centrifugal separators, respectively, and at least two separator control units configured to control the operation of the centrifugal separators and the speed of the variable feed pumps, thereby controlling the flow rate of fuel oil to be cleaned to the separators. The system further includes a system control unit, other than the separator control units, configured for receiving information from a unit in the fuel treatment system that is arranged downstream of the centrifugal separators or from an engine arranged to use the fuel that is treated by the system, and for sending operational requests to the separator control units based on the received information.

Abstract: A helmet restraint system for restraining the forward and downward movement of a helmet having an unfavorable center of gravity. A buckle strap having a first end and a second end is configured to be movably disposed in a wearer's garment. The buckle strap is preloaded between its first end, which is attached to the adjustment mechanism, and its second end, which is attached to an emergency release, and is extended in a loop coming out from first and second openings respectively in the collar of the garment for connection with a snap hook on the helmet.

Abstract: A helmet restraint system for restraining the forward and downward movement of a helmet having an unfavorable center of gravity. A buckle strap having a first end and a second end is configured to be movably disposed in a wearer's garment. The buckle strap is preloaded between its first end, which is attached to the adjustment mechanism, and its second end, which is attached to an emergency release, and is extended in a loop coming out from first and second openings respectively in the collar of the garment for connection with a snap hook on the helmet.

Abstract: A display system in a fighter aircraft including a helmet mounted display device and a helmet support unit. The helmet mounted display device is arranged to provide information on a visor of the helmet. The helmet support unit is arranged to interconnect the display system with a system computer and a power source in the aircraft. The the helmet support unit includes a high voltage power supply and the helmet support unit is arranged in a holder on a garment of the pilot.