An engine bleed control system for a gas turbine engine of an aircraft is provided. The engine bleed control system includes an engine bleed tap coupled to a fan-air source or a compressor source of a lower pressure compressor section before a highest pressure compressor section of the gas turbine engine and a turbo-compressor in fluid communication with the engine bleed tap. The engine bleed control system also includes a controller operable to selectively drive the turbo-compressor to boost a bleed air pressure as pressure augmented bleed air and control delivery of the pressure augmented bleed air to an aircraft use.

An engine bleed control system for a gas turbine engine of an aircraft is provided. The engine bleed control system includes an engine bleed tap coupled to a fan-air source or a compressor source of a lower pressure compressor section before a highest pressure compressor section of the gas turbine engine and a motorized compressor in fluid communication with the engine bleed tap. The engine bleed control system also includes a controller operable to selectively drive the motorized compressor to boost a bleed air pressure as pressure augmented bleed air and control delivery of the pressure augmented bleed air to an aircraft use.

An engine bleed control system for a gas turbine engine of an aircraft is provided. The engine bleed control system includes an engine bleed tap coupled to a fan-air source or a compressor source of a lower pressure compressor section before a highest pressure compressor section of the gas turbine engine and a motorized compressor in fluid communication with the engine bleed tap. The engine bleed control system also includes a controller operable to selectively drive the motorized compressor to boost a bleed air pressure as pressure augmented bleed air and control delivery of the pressure augmented bleed air to an aircraft use.

An aircraft passenger service device for receiving goods for cold storage to be supplied to aircraft passengers includes a receiving device having a viewing apparatus, a coolant inlet for feeding a coolant into the receiving device, and a coolant outlet for discharging the coolant from the receiving device. The viewing apparatus is designed to enable a user to inspect goods stored in the receiving device before removal. The aircraft passenger service device further includes a cooling arrangement having a coolant circuit line connected to the coolant inlet and the coolant outlet of the receiving device, and a device that directs into the coolant circuit line a refrigerant fluid flowing through a refrigerant fluid circuit line of a central cooling system of the aircraft.

An aircraft passenger service device for receiving goods for cold storage to be supplied to aircraft passengers includes a receiving device having a viewing apparatus, a coolant inlet for feeding a coolant into the receiving device, and a coolant outlet for discharging the coolant from the receiving device. The viewing apparatus is designed to enable a user to inspect goods stored in the receiving device before removal. The aircraft passenger service device further includes a cooling arrangement having a coolant circuit line connected to the coolant inlet and the coolant outlet of the receiving device, and a device that directs into the coolant circuit line a refrigerant fluid flowing through a refrigerant fluid circuit line of a central cooling system of the aircraft.

A ventilation system for an interior room is provided, having a first air suction device, a second air suction device, a suction volume control device, a first air conduction pipe, a second air conduction pipe, a vacuum generating device and a control unit. The suction volume control device affects an air flow from the first and the second air suction device to the first and the second air conduction pipe, respectively, wherein the control unit controls the suction volume control device so that the air flow from the first air suction device to the first air conduction pipe is controllable.

A ventilation system for an interior room is provided, having a first air suction device, a second air suction device, a suction volume control device, a first air conduction pipe, a second air conduction pipe, a vacuum generating device and a control unit. The suction volume control device affects an air flow from the first and the second air suction device to the first and the second air conduction pipe, respectively, wherein the control unit controls the suction volume control device so that the air flow from the first air suction device to the first air conduction pipe is controllable.

A rotor mounting boom assembly includes a rotor mounting boom releasably attachable to a wing of the personal aircraft, one or more vertical lift rotors, and one or more rotor controller assemblies. Controller assemblies for each rotor are positioned on the rotor mounting booms such that downwash from the rotor causes increased airflow across the controller assembly to cool the controller assembly components. A rotor controller enclosure includes an air inlet and an air outlet to allow airflow through the enclosure to cool the controller components. The air inlet is positioned relative to the path of the rotor blades such that the downwash from the rotor that flows into the air inlet is maximized. The structure of the enclosure includes features for increasing the airflow through the enclosure.

A liquid system for circulating a liquid through a circulation loop includes a liquid pump, a primary liquid reservoir and an auxiliary liquid reservoir. The liquid pump pressurizes liquid within the circulation loop. The primary liquid reservoir has a primary variable volume expandable to accommodate volumetric expansion of pressurized liquid up to a threshold volume. The auxiliary liquid reservoir has an auxiliary variable volume expandable only after the threshold volume is exceeded up to a maximum volume.

A ram air fan assembly includes an outer housing. An inner housing is located within the outer housing. A motor is attached to the inner housing. An inlet tube extends between the outer housing and the motor. The inlet tube includes a straight first portion and a curved second portion. At least one of the two portions includes a perforated portion.