Welcome Guest. Sign in or Signup

1 Answers

Altimeter

Asked by: 3640 views Aircraft Systems, Commercial Pilot, General Aviation, Instrument Rating

So, i know how the Altimeter works.

But, can someone explain me, what happens inside the Altimeter, when you turn the knob ( to change the setting in the Kollsmann W.) of the Altimeter. Does it mechanically change setting and turn the needles "only" or is the knob also connected to the "aneroid wafer"? 

Thanks!

Ace Any FAA Written Test!
Actual FAA Questions / Free Lifetime Updates
The best explanations in the business
Fast, efficient study.
Pass Your Checkride With Confidence!
FAA Practical Test prep that reflects actual checkrides.
Any checkride: Airplane, Helicopter, Glider, etc.
Written and maintained by actual pilot examiners and master CFIs.
The World's Most Trusted eLogbook
Be Organized, Current, Professional, and Safe.
Highly customizable - for student pilots through pros.
Free Transition Service for users of other eLogs.
Our sincere thanks to pilots such as yourself who support AskACFI while helping themselves by using the awesome PC, Mac, iPhone/iPad, and Android aviation apps of our sponsors.

1 Answers



  1. Bill Trussell on Dec 18, 2012

    All of the components of the instrument are connected together. Think of it as selecting a “starting point” for the mechanics of the altimeter to measure the difference between the air pressure inside the “wafer” (which is sealed) and outside the “wafer” but inside the altimeter case ( exposed to the outside air through the static port). Moving the window setting “fine tunes” the altimeter display as the range offered in the window is very limited (2 inches or 2000 feet) as compared to the measurement range of the instrument. The intent of the adjustment is only to compensate for the existance of non-standard pressure at the measurement point.

    +1 Votes Thumb up 1 Votes Thumb down 0 Votes


The following terms have been auto-detected the question above and any answers or discussion provided. Click on a term to see its definition from the Dauntless Aviation JargonBuster Glossary.

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.