Utilizing your notes and past knowledge answer the following questions: 1) Describe the four types of airspeed. 2) Describe the meaning of the white arc on the ASI. 3) Describe the upper limit of the white arc (VFE). 4) Describe VNE 5) What is the indication on the ASI if both the pitot tube opening and the drain hole should become clogged simultaneously? Warm-Up – 3/31 – 10 minutes
Warm-Up – 3/31 – 10 minutes. Utilizing your notes and past knowledge answer the following questions: Describe the four types of airspeed. Describe the meaning of the white arc on the ASI. Describe the upper limit of the white arc (VFE). Describe VNE - PowerPoint PPT Presentation
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Utilizing your notes and past knowledge answer the following questions:
1) Describe the four types of airspeed.2) Describe the meaning of the white arc on
the ASI.3) Describe the upper limit of the white arc
(VFE). 4) Describe VNE5) What is the indication on the ASI if both the
pitot tube opening and the drain hole should become clogged simultaneously?
Warm-Up – 3/31 – 10 minutes
Questions / Comments
Utilizing your notes and past knowledge answer the following questions:
1) Describe the four types of airspeed.2) Describe the meaning of the white arc on
the ASI.3) Describe the upper limit of the white arc
(VFE). 4) Describe VNE5) What is the indication on the ASI if both the
pitot tube opening and the drain hole should become clogged simultaneously?
Warm-Up – 3/31 – 10 minutes
AirSpeed Indicator (ASI)• Multiple types of
airspeeds.
• Indicated airspeed (IAS)—the direct instrument reading obtained from the ASI
• Calibrated airspeed (CAS)—IAS corrected for installation error and instrument error.
Because air density decreases with an increase in altitude, an aircraft has to be flown faster at higher altitudes to cause the same pressure difference between pitot impact pressure and static pressure.
Utilizing your notes and past knowledge answer the following questions:
1) Describe the four types of airspeed.2) Describe the meaning of the white arc on
the ASI.3) Describe the upper limit of the white arc
(VFE). 4) Describe VNE5) What is the indication on the ASI if both the
pitot tube opening and the drain hole should become clogged simultaneously?
Warm-Up – 3/31 – 10 minutes
AirSpeed Indicator Markings• Standard color-coded
markings:• White arc — commonly
referred to as the flap operating range since its lower limit represents the full flap stall speed and its upper limit provides the maximum flap speed.
• Approaches and landings are usually flown at speeds within the white arc.
Utilizing your notes and past knowledge answer the following questions:
1) Describe the four types of airspeed.2) Describe the meaning of the white arc on
the ASI.3) Describe the upper limit of the white arc
(VFE). 4) Describe VNE5) What is the indication on the ASI if both the
pitot tube opening and the drain hole should become clogged simultaneously?
Warm-Up – 3/31 – 10 minutes
Blockage of the Pitot-Static System
• If both the pitot tube opening and the drain hole should become clogged simultaneously, no change is noted on the airspeed indication should the airspeed increase or decrease.
Questions / Comments
March 31
• 1912 — The world's first hydroplane competitions, held in Monaco, over the past week, has been a runaway success for Farman biplanes.
• Belgian Jules Fisher is the overall winner.
• He is one of only two non-French pilots of the eight starters and flies a Henry Farman machine.
• 1975 — A specially modified Royal Canadian Air Force de Havilland CC-115 (DHC-5 “Buffalo”) makes its first flight carrying an inflatable air-cushion landing system beneath the fuselage.
• 1979 — The British government announces development and production costs for the “Concorde” supersonic airliner since November 29, 1962, when agreement was reached with France to design and built the aircraft.
• Through December 31, 1978, the French government spent a total of £920 million whereas the British spent £898 million.
• The total cost of £1.818 billion would increase by a further £163 million, before government funding ceased.
• Precession can also create some minor errors in some instruments.
• Instruments may require corrective realignment during flight, such as the heading indicator.
Gyroscopic Flight Instruments
Sources of Power• Gyros are vacuum,
pressure, or electrically operated.
• Most aircraft have at least two sources of power to ensure at least one source of bank information is available if one power source fails.
Gyroscopic Flight Instruments
Sources of Power
• The vacuum or pressure system spins the gyro by drawing a stream of air against the rotor vanes to spin the rotor at high speed, much like the operation of a waterwheel or turbine.
can initially show roll rate and it indicates rate of turn.
• Both instruments indicate turn direction and quality (coordination), and also serve as a backup source of bank information in the event an attitude indicator fails.
is fundamentally a mechanical instrument designed to facilitate the use of the magnetic compass.
• Errors in the magnetic compass are numerous, making straight flight and precision turns to headings difficult to accomplish, particularly in turbulent air.