этапы отбора и ответы. Этапы отбора и ответы. REV2. Этапы отбора в Аэрофлот

• Название: Этапы отбора в Аэрофлот
• Анкор: этапы отбора и ответы
• Дата: 11.02.2020
• Размер: 7.89 Mb.
• Имя файла: Этапы отбора и ответы. REV2.docx
• Тип: Документы; #107966
• страница: 9 из 57

Поляры верт. скоростей

At a given altitude, for any type of a/c excess power determines r/c. R/C changes with V. Graphs assist to determine max R/C and best A/C V.





If thrust available is constant with V (a jet engine). Maximum climb angle occurs at minimum drag.



For a jet or propeller, r/c max does not occur at minimum power required.

C max occurs at V where excess power is greatest.

The V for r/c max is found for any a/c by

• 
  Plotting both PR vs V and PA vs V
  
• 
  Finding the V where the distance between the PA and PR curves (excess) is the greatest
  

In general, PR decreases w/ altitude. And, PA drops faster than PR. R/C max decreases with altitude.





Ceiling is altitude where r/c has reached a limit.