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Secondary air

Large surplus of air that cools the hot sections of a gas turbine engine to lower temperatures.

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Related terms

secondary air
Fire safety; Prevention & protection

All the combustion air that is intentionally allowed to enter the combustion chamber in excess of primary air.

secondary air
Aerospace; Control systems

Large surplus of air that cools the hot sections of a gas turbine engine to lower temperatures.

secondary air
Arts & crafts; Ceramics

In fuel burning kilns, air which enters kiln after initial combustion and feeds flames as they leave primary combustion source. In gas kiln, secondary air enters burner port ...

secondary air
Construction; Plumbing

The remaining air needed for complete combustion besides primary air. This is the air surrounding the flames outside the burner ports.

secondary air
Energy; Natural gas

The air for combustion externally supplied to the flame at the point of combustion.

secondary air
Automotive; Automobile

In some exhaust emission control systems, e.g., thermal reactor or two-bed converter, secondary (outside) air is added to the exhaust to ensure sufficient supply of oxygen to ...

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Aerospace; Control systems

Light on an airplane that indicates the plane's position and orientation; red light on the left (port) wing tip and green light on the right (starboard) wing tip.

admition and disposition (AAD)
Aerospace; Control systems

Admission and disposition of the personal in aeronautics.

shroud
Aerospace; Control systems

Device used with turbine rotor to prevent blade tip losses and excessive vibrations. The shrouded blades can be thinner than unprotected ones.

simplex nozzles
Aerospace; Control systems

Single-orifice channels through which highly atomized and accurately shaped sprays of fuel go into the combustion chamber.

solvent immersion
Aerospace; Control systems

Cleaning method in which parts are immersed in solvent to remove carbon,gum, grease, and other surface contaminants.

span
Aerospace; Control systems

Dimension of an airfoil from tip to tip or from root to tip.

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