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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: T & B Corrections
From: Nigel Gardner
Date: 2000 Nov 10, 5:04 AM
From: Nigel Gardner
Date: 2000 Nov 10, 5:04 AM
The International Standard Atmosphere is as your Aero friend says is 10 C and 1013.2mb but the various table makers tended to use their own for example: Norie (the oldest tables still on the go, not having been out of print since 1803) uses 10C and 1000mb Burton 10.C and 1010mb Inman 1015 and 50F (10C) Hughes 1000mb and 50F It does not really matter what base one uses provided you know which one your set of tables uses. What is quite another matter is the model used to generate the corrections, and there are many different ones, many of the tables using a different algorithm below and above about 10deg NG
