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2020 LTS Keflavik news post draft: Difference between revisions
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[''The Pitot tube is used to determine the speed of the aircraft relative to the (moving) air - the airspeed. The tube opening faces the oncoming air, and the pressure caused the air ramming in to the tube is measured. The faster the air flow the higher the pressure. The denser the air, the higher the air pressure. Imagine being dipped in a stream of water - the faster the water flow the more force (and higher pressure - more force per unit area depending on how large you are ). If the water was replaced by something denser like lava or lead, then the pressure will increase.''] | [''The Pitot tube is used to determine the speed of the aircraft relative to the (moving) air - the airspeed. The tube opening faces the oncoming air, and the pressure caused the air ramming in to the tube is measured. The faster the air flow the higher the pressure. The denser the air, the higher the air pressure. Imagine being dipped in a stream of water - the faster the water flow the more force (and higher pressure - more force per unit area depending on how large you are ). If the water was replaced by something denser like lava or lead, then the pressure will increase.''] | ||
[''The static port(s) are used in trying to determine altitude, and how fast an aircraft is ascending or descending (vertical speed). Static ports are openings that are connected to tubes that 'sample' the air pressure. Unlike the Pitot tube, static ports' openings don't face the oncoming air head-on to avoid pressure from ramming - although static ports on different sides of aircraft are used to try to reduce the effect of ramming air when there are winds blowing across the aircraft, or the aircraft is experiencing side-slip.'' ''Since pressure is being, the values for altitude and vertical speed vary depending on weather - the pressure at the altitude of the ground beneath a craft can be different on different days. The way the pressure changes with altitude can also change - including as a result of water in the atmosphere changing state.''] | [''The static port(s) are used in trying to determine altitude, and how fast an aircraft is ascending or descending (vertical speed). Static ports are openings that are connected to tubes that 'sample' the air pressure. Unlike the Pitot tube, static ports' openings don't face the oncoming air head-on to avoid pressure from ramming - although static ports on different sides of aircraft are used to try to reduce the effect of ramming air when there are winds blowing across the aircraft, or the aircraft is experiencing side-slip.'' ''Since pressure is being used, the values for altitude and vertical speed vary depending on weather - the pressure at the altitude of the ground beneath a craft can be different on different days. The way the pressure changes with altitude above ground can also change - including as a result of water in the atmosphere changing state.''] | ||
So while trying to maintain altitude and regain speed I readjusted the motor to max power, which helped me to at least not drop into the water; and I pulled the alt-static port knob to regain static pressure, and some time after that the Airspeed Indicator (ASI), Altimeter and Vertical-Speed Indicator (VSI) got back to life. | So while trying to maintain altitude and regain speed I readjusted the motor to max power, which helped me to at least not drop into the water; and I pulled the alt-static port knob to regain static pressure, and some time after that the Airspeed Indicator (ASI), Altimeter and Vertical-Speed Indicator (VSI) got back to life. | ||