Tag Archives: Altitude calculation

How does the lift coefficient for maximum range vary with altitude? (No compressibility effects.)

A: The lift coefficient decreases with increasing altitude.
B: The lift coefficient is independent of altitude.
C: The lift coefficient increases with increasing altitude.
D: Only at low speeds the lift coefficient decreases with increasing altitude.

 

 

 

 

 

 

 

 

Answer: B

According to the chart the minimum obstruction clearance altitude (MOCA) is 8500 ft. The meteorological data gives an outside air temperature of -20(degrees)C at FL 85. The QNH, given by a met. station at an elevation of 4000ft, is 1003 hPa. What is the minimum indicated altitude?

A: 8500 ft.
B: 8800 ft.
C: 12800 ft.
D: 8200 ft.

 

 

 

 

 

 

 

 

Answer: B

At which pressure and temperature conditions may you safely assume that the minimum usable flight level at least lies at the same height, as the minimum safe altitude?

A: At a temperature greater than or equal to that of the ISA and where the QNH is greater than or equal to 1013.25 hPa
B: In a cold low pressure region
C: At a temperature less than or equal to that of the ISA and where the QNH is less than 1013.25 hPa
D: In a very cold area with a QNH of 1015 hPa

 

 

 

 

 

 

 

 

Answer: A