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  1. How does an energy variometer work? - Aviation Stack Exchange

    In a comment to an answer regarding instrumentation complexity, an "energy variometer" was mentioned, labeled in knots. What does this dial actually show, and how does it work? The …

  2. flight instruments - What is the nature of the glider's vario lag ...

    Aug 17, 2022 · " The average mechanical variometer is about three seconds too late ". . What is the nature of this lag? Wouldn't a gentle blow into the static port make the needle move …

  3. Is there any difference between VSI and VVI?

    Feb 4, 2025 · "VVI" seems to be more military. See What is VVI in Aviation? and Vertical Speed Indicator. This instrument has various other names like a "rate of climb/descent indicator". In …

  4. How does this total energy compensation pitot tube work?

    Jul 13, 2023 · The part that plugs into the aircraft looks something like this: From there, the pressures can be used to drive a normal airspeed indicator, total energy compensated …

  5. What's a normal response delay for a paragliding vario?

    Jun 26, 2020 · It is an Altimeter-Variometer-GPS combo. As you know, these devices warn the pilot with beeps during climbing and sinking. I'm using the device for a couple of months but I …

  6. Can you fly a glider in a cloud on primary instruments?

    Apr 10, 2016 · My flight instruments in my hang glider were an aircraft altimeter with 20 foot resolution, a variometer that was sensitive to about 50 foot per minute climb/descent rate, and …

  7. What is the glide ratio of a DA42? - Aviation Stack Exchange

    Jul 27, 2017 · @Jan Hudec The ratio of 1,32 (more precisely, the fourth root of 3) is the quotient maximum range speed/maximum endurance speed. Hence, if you determine experimentally …

  8. Do hot air balloons have flight data recorders and cockpit voice ...

    Jul 11, 2024 · Per balloon regulations, they don't require certified CVR or FDR. Hot air balloons don't have much in the way of instruments, traditionally just an altimeter and a variometer. …

  9. How is the wind direction and wind speed measured in flight?

    Dec 6, 2015 · Indirectly, as the difference between true air speed and ground speed. Since aircraft cannot measure true air speed, several steps are needed to arrive at the correct wind …

  10. Were there engineers in airship nacelles, and why were they there?

    Jun 28, 2024 · Adjacent to the engine telegraph was a tachometer, an altimeter, and a variometer (or vertical speed indicator). There was also a speaking tube to communicate with riggers …