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Forum: Tech Log

17th Nov 2012, 18:01

Replies: 71

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Views: 36,627

Posted By itsresidualmate

The overspeed governor is always there; throttle...

The overspeed governor is always there; throttle at idle with the aircraft in a dive, if the prop's speed increases beyond governered speed, the governor will increase blade pitch until speed is...

Forum: Tech Log

15th Oct 2012, 21:14

Replies: 71

Beta Range

Views: 36,627

Posted By itsresidualmate

Meant to add, the pressurized oil that moves the...

Meant to add, the pressurized oil that moves the pitch change piston comes from an engine driven pump; no engine rotation, no drive for the pitch change pump, doesn't matter what you do with the prop...

Forum: Tech Log

15th Oct 2012, 20:19

Replies: 71

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Views: 36,627

Posted By itsresidualmate

Actually, I'm fairly sure there is no weight on...

Actually, I'm fairly sure there is no weight on wheels protection on the B1900. If you were to lift the power levers down through the flight idle gate, I think you'd get reverse (beta range) in the...

Forum: Tech Log

15th Oct 2012, 20:14

Replies: 71

Beta Range

Views: 36,627

Posted By itsresidualmate

There is one pitch change piston inside the prop...

There is one pitch change piston inside the prop hub which is connected to all the prop blades; when its at its full extension you've got feather. When it's at it's full retraction you have max...

Forum: Tech Log

15th Oct 2012, 17:19

Replies: 71

Beta Range

Views: 36,627

Posted By itsresidualmate

The Propeller Constant Speed Unit is usually a...

The Propeller Constant Speed Unit is usually a centrifugal governor supplying or restricting oil pressure to the pitch change piston that is in turn connected to the blades. The PCU maintains the...

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