outflow valve

outflow valve

A valve in the aircraft pressurization system that controls the pressure inside the cabin by controlling the amount of air allowed to flow out of the cabin. It is a type of pressure maintenance valve.
References in periodicals archive ?
It concluded it was a 'serious incident' and said the outflow valve on the aircraft had also contributed to pressure problems on other aircraft.
To illustrate the model, let's take a simple example consisting of a fluid tank with an intake valve and an outflow valve.
After getting the outflow valve to close enough to maintain a cabin altitude less than 10,000 feet, the flight was completed by transiting at 15,000 feet.
Fluid tank actors model Tag Behaviors Controller Loop--continuous operation Intake Valve Intake open--allow fluid into the tank Intake close--stop flow of fluid into the tank Tank Check level--measure the level of fluid in the tank and request intake on reaching a minimum level or outflow when above a maximum level Outflow Valve Ouflow open--allow fluid to exit the tank Outflow close--stop fluid exit from the tank Table 2.
If an outflow valve that should be closed is accidentally left open, media can leak to the environment without notice or until another part of the control system discovers the error.
The Air Accident and Incident Investigation Board (AAIIB) of Cyprus could not conclusively determine the causes of the incident, but indicated two possibilities: an electrical malfunction causing the opening of the outflow valve, or the inadvertent opening of the aft service door.
The heating medium circulation is only active when the outflow valve V5 opens towards the direction of the condenser and when the inflow valve AV2 is open.
Other Honeywell products on the G550 include the RE220 auxiliary power unit (APU), environmental control system, cabin pressurization control system with new thrust recovery outflow valve (TROV) and lighting.
Contract awarded for Reservoir outflow valve Electric installation work
The Air Accident and Incident Investigation Board of Cyprus could not conclusively determine the causes of the incident, but indicated two possibilities: an electrical malfunction causing the opening of the outflow valve, or the inadvertent opening of the aft service door.
In the process, the flight engineer shut off the aft outflow valve to allow the fumes to remain in the jet, but the crew still could not locate the source.