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that level flight is measured by the VSI first, and in being a level flight, has a constant altitude.
originally posted by: neutronflux
a reply to: turbonium1
You
Show me a source that states the altimeter measures for level flight, ascent, and descent
You are are wrong....
HIGH POWER ROCKETRY: DUAL DEPLOYMENT (two parachutes)
HIGH POWER ROCKETRY: DUAL DEPLOYMENT
westrocketry.com...
Dual Event Altimeter. Altimeter is a device that continuously measures atmospheric pressure. The altitude of the rocket is immeditatelly computed from the difference of pressure at the ground level (as sampled during altimeter activation) and currently measured pressure. Dual Event Altimeter is an altimeter with some additional functionality. First of all, it is able to detect apogee and "throw-a-switch" when the apogee is detected (this can be used to fire a drogue parachute ejection charge). Second, the dual event altimeter will continue to monitor the altitude even during the descent and can "throw-another-switch" when a predetermined altitude is reached (and thus fire the main parachute ejection charge). Most of the dual event altimeters also record the graph of altitude vs. time for the whole duration of flight.
originally posted by: neutronflux
a reply to: turbonium1
No your stupid false argument is VSI should show something.
Again....
You
that level flight is measured by the VSI first, and in being a level flight, has a constant altitude.
Again....
No matter the model...
If you fly over London then Paris, is 30,000 feet above sea level any different over Lindon than Paris? If 30,000 feet is maintained between the two cities, why would there be any vertical speed indication on the VSI? In either model?
Why don't you admit that planes do not measure level flight with altimeters, because you know they don't.
By Keith Beachy
www.metabunk.org...-192510
There are constant attitude adjustments, but not for the curvature of the earth, that is bunk to me.
www.aviationweather.ws...
When we fly from low/high to high/low pressure areas we may need to make adjustments.
The plane wants to climb as we burn fuel, we make a thrust adjustment, changing the thrust might require a pitch change.
and the VSI would measure the descent as 5 fpm, which is not the case, obviously.
The altimeter does NOT measure for level flight, nor an ascent, nor a descent
How Skydiving Work
Automatic Activation Device
adventure.howstuffworks.com...
any of these situations, you may be unable to deploy your parachute yourself, and you need some help. An AAD (automatic activation device) is a small computer that constantly monitors the altitude and activates the reserve chute for you.
Show me a source that states the altimeter measures for level flight, ascent, and descent
HIGH POWER ROCKETRY: DUAL DEPLOYMENT
westrocketry.com...
Dual Event Altimeter. Altimeter is a device that continuously measures atmospheric pressure. The altitude of the rocket is immeditatelly computed from the difference of pressure at the ground level (as sampled during altimeter activation) and currently measured pressure. Dual Event Altimeter is an altimeter with some additional functionality. First of all, it is able to detect apogee and "throw-a-switch" when the apogee is detected (this can be used to fire a drogue parachute ejection charge). Second, the dual event altimeter will continue to monitor the altitude even during the descent and can "throw-another-switch" when a predetermined altitude is reached (and thus fire the main parachute ejection charge). Most of the dual event altimeters also record the graph of altitude vs. time for the whole duration of flight.