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Posted: 3/25/2022 9:34:20 AM EDT
This is a short clip from a video I shot last weekend set in slow motion that shows the lag between a TE Variometer and a mechanical VSI. Many times when a student pilot begins PP lessons in a powered aircraft they will try to keep the plane level by watching the VSI. I was flying thru some light chopped up lift at the time.
https://mountainlife.smugmug.com/Sailplanes/i-77rfgwz/A 
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Posted: 3/25/2022 9:41:22 AM EDT
[#1]
Awesome! Love the video, looks like a fun hobby
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Posted: 3/25/2022 11:35:58 AM EDT
[#2]
Vertical speed in a power plane is mostly controlled with power. Even in rising or sinking air a sensitive (TE, especially) variometer is not required or even desirable.
Your student has not been trained to look outside, and I'll bet has desktop PC time that has no outside. Suction cup soap holders are a good tool to break that habit. On the other hand, TE variometers are great for detecting the weak lift in this region of the Midwest. |
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Posted: 3/25/2022 2:46:34 PM EDT
[#3]
Is that a VSI, or IVSI? I know how a VSI compares to an IVSI, but how does an IVSI compare to a variometer? Leaving aside the fact that most variometers have a full scale maximum of about 10KN (1000FPM), of course.
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Posted: 3/25/2022 4:03:37 PM EDT
[#4]
Quote HistoryQuoted: Is that a VSI, or IVSI? I know how a VSI compares to an IVSI, but how does an IVSI compare to a variometer? Leaving aside the fact that most variometers have a full scale maximum of about 10KN (1000FPM), of course. Both a VSI and IVSI show you what the aircraft is doing, a IVSI just shows it quicker. A Total Energy, compensated Vario tells you what the air is doing. A VSI will show stick induced climb a vario will not. |
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Posted: 3/29/2022 9:11:00 AM EDT
[#5]
Student pilots learning how to fly for the first time should have all flight instruments covered up so they they can learn how to fly.
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Posted: 3/29/2022 10:40:18 AM EDT
[#6]
Quote HistoryQuoted: Both a VSI and IVSI show you what the aircraft is doing, a IVSI just shows it quicker. A Total Energy, compensated Vario tells you what the air is doing. A VSI will show stick induced climb a vario will not. Quote HistoryQuoted: Quoted: Is that a VSI, or IVSI? I know how a VSI compares to an IVSI, but how does an IVSI compare to a variometer? Leaving aside the fact that most variometers have a full scale maximum of about 10KN (1000FPM), of course. Both a VSI and IVSI show you what the aircraft is doing, a IVSI just shows it quicker. A Total Energy, compensated Vario tells you what the air is doing. A VSI will show stick induced climb a vario will not. I have never seen a variometer limited to 1000 fpm full scale. I have exceeded that in Missouri where any lift seems like a miracle some days. |
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