RMIT飞行训练课件－PITOT / STATIC SYSTEMS皮托/静压系统

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PITOT / STATIC SYSTEMS
Aim
To understand the principles of operation behind a
pitot / static system, considering the possible
errors and limitations involved.
Application
• Used when relying on the pressure instruments.
• ASI, ALT and VSI.
Overview
Revision
Static Pressure
• pressure due to weight of air molecules
pushing down. Reduces with increased
altitude.
Revision
Dynamic Pressure
• pressure due to relative movement.
Depends on density and velocity.
Total Pressure
• PT =
Definitions
• Static Vent
Definitions
• Pitot Tube
Definitions
• Alternate Static Source
Principles
Principles
• Airspeed Indicator
Principles
Principles
• Altimeter
Principles
Principles
• Vertical Speed Indicator
Principles
• VSI
Considerations
Instrument Errors
• due to imperfections in the design and
installation.
Instrument Lag
• response time of pressure instruments can be
slow due to long lines or rapid pressure
changes.
Position Error
• poor design and placement of vents may not be
representative of the free atmospheric pressure.
Considerations - Review
• Blockages
Descent
Static Climb
Blockage
Descent - -
Pitot Climb - -
Blockage
ASI ALT VSI
Over read
Under read
Under read
Over read Over read
Under read Zero
Zero
Airmanship
• Know where the alternate static source is
located
• Always check pitot and static vents during
pre-flight
Review

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谢谢楼主，我正准备去RMIT读书