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File:MacCready Ring and variometer.jpg

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MacCready Ring and variometer

Summary

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Description
English: The index arrow, white triangle, on the ring is placed against the expected rate of climb at the next thermal. The variometer needle will then point to the optimum airspeed, listed on the ring, to be flown to that thermal. The greater the expected rate of climb, the more clockwise the ring is rotated, and the faster is the optimum airspeed.
Date
Source Glider Flying Handbook, FAA-H-8083-13, https://www.faa.gov/regulations_policies/handbooks_manuals/aircraft/glider_handbook/media/gfh_ch04.pdf
Author U.S. Department of Transportation, FAA

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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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current23:08, 14 December 2020Thumbnail for version as of 23:08, 14 December 2020475 × 222 (28 KB)Pi3.124 (talk | contribs)Uploaded a work by U.S. Department of Transportation, FAA from Glider Flying Handbook, FAA-H-8083-13, https://www.faa.gov/regulations_policies/handbooks_manuals/aircraft/glider_handbook/media/gfh_ch04.pdf with UploadWizard

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