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I came across this question in a theory exam. Can anyone tell me the meaning of the word FINESSE in this context.

À la FINESSE maximum :

  1. votre taux de chute est minimum et votre angle de plané est maximum

  2. votre taux de chute est minimum

  3. votre angle de plané et votre taux de chute sont minimum

  4. votre angle de plané est minimum

I also found another occurence of the word somewhere else.

Le vent effectif se manifeste par les effets de variations de vitesse ou de FINESSE par rapport au sol.

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Finesse in this context is an aerodynamic property corresponding to the lift-to-drag ratio (rapport portance/traînée in french).

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