AA311.Lecture23.Slides

AA311.Lecture23.Slides - AA311: Atmospheric Flight...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
AA311: Atmospheric Flight Mechanics Basic Flight Instruments Dr. Laszlo Techy University of Washington December 06, 2011 Dr. Laszlo Techy AA311: Atmospheric Flight Mechanics
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Basic Flight Instruments Flight instruments required for safe operation: 1 Visual Flight Rules (VFR) 1 Airspeed indicator (ASI) 2 Altimeter 3 Magnetic direction indicator (compass) In addition, for Instrument Flight Rules (IFR) 1 Gyroscopic rate-of-turn indicator 2 Slip-skid indicator 3 Sensitive altimeter adjustable for barometric pressure 4 Clock 5 Gyroscopic pitch-and-bank indicator (artificial horizon) 6 Gyroscopic direction indicator (directional gyro or equivalent) Title 14 of Code of Federal Regulations (14 CFR) part 91. 1 From FAA Instrument Flying Handbook: Chapter 3: Flight Instruments Dr. Laszlo Techy AA311: Atmospheric Flight Mechanics
Background image of page 2
Basic Flight Instruments Three groups: Pitot-static instruments Compass systems Gyroscopic instruments Dr. Laszlo Techy AA311: Atmospheric Flight Mechanics
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Pitot-static Instruments The pressure of the static air is sensed at a flush port where the air is not disturbed. Ports on the side of the electrically heated Pitot-static head. Ports on the side of the fuselage or the vertical fin. These ports are in locations proven by flight tests to be in undisturbed air. They are normally paired, one on either side of the aircraft. This dual location prevents lateral movement of the aircraft from giving erroneous static pressure indications. The areas around the static ports may be heated with electric heater elements to prevent ice forming over the port and blocking the entry of the static air. Dr. Laszlo Techy AA311: Atmospheric Flight Mechanics
Background image of page 4
Pitot-static Instruments Dr. Laszlo Techy AA311: Atmospheric Flight Mechanics
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Pitot-static Instruments Three basic pressure-operated instruments Sensitive altimeter (ASI) Vertical speed indicator (VSI) All three receive pressures sensed by the aircraft Pitot-static system. The static ports supply pressure to the ASI, altimeter, and VSI. Dr. Laszlo Techy AA311: Atmospheric Flight Mechanics
Background image of page 6
Blockage considerations Pitot tube is sensitive to blockage, especially by icing. Indications of Pitot tube blockage: At the altitude where the Pitot tube becomes blocked, the ASI remains at the existing airspeed and doesnt reflect actual changes in speed. At altitudes above where the pitot tube became blocked, the ASI displays a higher-than-actual airspeed increasing steadily as altitude increases. At lower altitudes, the ASI displays a lower-than-actual airspeed decreasing steadily as altitude decreases. Indications of static port blockage
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This document was uploaded on 02/05/2012.

Page1 / 32

AA311.Lecture23.Slides - AA311: Atmospheric Flight...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online