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tapeline altitude

French translation: altitude vraie

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)

English term or phrase:	tapeline altitude
French translation:	altitude vraie
Entered by:	Daniel Bouchard

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15:00 Sep 20, 2011

English to French translations [PRO]
Tech/Engineering - Aerospace / Aviation / Space / Aircrafts

English term or phrase: tapeline altitude

"The indicated rotate airspeed for each takeoff run was converted to ground speed using the winds and temperature for the time of takeoff from the Environment Canada climatic database, the tapeline altitude of the airport and the density ratio."

I have problem finding out what "tapeline" refers to.

Thanks for the help!

Daniel Bouchard KudoZ activity Questions: 704 (7 open) (1 without valid answers) (14 closed without grading) Answers: 2
Local time: 05:38

altitude vraie

Explanation:
;

Selected response from:

Marion Feildel
Turkey
Local time: 12:38

Grading comment

Merci!
4 KudoZ points were awarded for this answer

Summary of answers provided

3 +1

altitude vraie

Marion Feildel

altitude géométrique

FX Fraipont

Answers

20 mins confidence:

altitude géométrique

Explanation:
"3. Standard Atmosphere
The concept of a standard atmosphere is required so that we can perform comparisons of
performance among different aircraft. On any given day it is likely that the atmosphere will not be standard. Consequently the results of flight tests would be different, even for the same aircraft, if the tests were performed on different days, say mid summer and mid winter. However these results can be reduced to conditions in a standard atmosphere and then compared.
The assumptions for a standard atmosphere are:
Assumptions:
1. The atmosphere is static (V = 0)
Then the differential form of Bernoulli’s equation is evaluated with V = 0. The result is the
aero-hydro static equation:
(1) where D = density
g = acceleration due to gravity
hG = geometric (tapeline) altitude"
http://www.dept.aoe.vt.edu/~lutze/AOE3104/standardatmos.pdf

"Les altitudes données ci-dessous sont géopotentielles.

Dans l'étude de la répartition de la pression dans l'atmosphère, il est préférable d'introduire le potentiel de la force de la pesanteur (géopotentiel), qui définit l'énergie potentielle d'une particule d'air située en un point donné.
Le mètre géopotentiel normal (m'), qui équivaut à 9.80665 m²/s², est adopté par l'Organisation Météorologique mondiale.
En désignant par r le rayon terrestre fictif (6 356 766 m) les équations de translations entre l'altitude géométrique (h) et l'altitude géopotentielle (H) sont :"
http://www.aviation-fr.info/dom/dominique19.php

FX Fraipont
Belgium
Local time: 11:38
Native speaker of:

French
PRO pts in category: 209

28 mins confidence:

peer agreement (net): +1

altitude vraie

Explanation:
;

Example sentence(s):

Altitude vraie [ True Altitude ] L’altitude vraie est mesurée en référence au niveau moyen de la mer, lorsque l’altimètre est ajusté précisément à la pression barométrique du lieu.
Tapeline altitude, or true altitude, is the linear distance above sea level and is determined by triangulation or radar.

Reference: http://www.talisman-illustration-design.com/turbulence/pages...
Reference: http://www.spaceagecontrol.com/USNTPS-FTM-C2.pdf

Marion Feildel
Turkey
Local time: 12:38
Native speaker of:

French
PRO pts in category: 11

Grading comment

Merci!

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tapeline altitude

French translation: altitude vraie

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French translation: altitude vraie

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