WorksheetsCPL PoF range and endurance revision
Total questions: 12
Worksheet time: 6mins
Define SAR:
The amount of time flown per unit quantity of fuel
Is IAS/GFC
Is the ground distance flown per unit quantity of fuel
Is the air distance flown per unit quantity of fuel
Specific fuel consumption is:
The gross fuel consumption per unit of power produced
The specific fuel consumption per unit of power produced
The gross fuel consumption per unit of work done
The gross fuel consumption x TAS
The best conditions for maximum SAR are:
(Select all that apply)
Lowest weight
Flying at minimum drag speed
Increased altitude (Only effects best IAS)
Decreased altitude (Only effects best IAS)
Altitude has no effect on SAR
True. But it does effect specific ground range
False. Increasing altitude will increase SAR
In a practical sense is it recommended to fly at the minimum drag speed?
Yes as this will maximise SAR
No as minimum drag speed is considered an unstable speed
Yes as the aircraft can travel faster
Yes as it will save money
Select the options that will give the lowest SFC and achieve best range
Minimum RPM
Carb heat off
Maximum RPM
Aircraft properly leaned
High MAP, Low RPM
What is the difference between flying for range and flying for endurance?
There is no difference they are the same thing
When flying for endurance it is not important how much distance is covered.
One requires maximum speed the other requires minimum speed
Range is concerned with TAS and endurance is concerned with IAS
Define flying for endurance:
Flying for the greatest amount of time for the most fuel used
Flying for the greatest distance in the shortest amount of time
Flying for the greatest distance in the longest amount of time
Flying for the greatest amount of time for the least fuel used
How does altitude effect endurance?
For a given IAS increasing altitude will increase TAS. This will increase endurance
For a given IAS increasing altitude will increase TAS. This will decrease endurance
For a given IAS increasing altitude will reduce TAS. This will increase endurance
For a given IAS increasing altitude will reduce TAS. This will decrease endurance
Increasing weight will:
Increase endurance due to the increase in potential energy for a given altitude
Decrease endurance by decreasing drag
Decrease endurance due to the increased minimum speed
Not effect endurance
Leaning the mixture has no effect on endurance
True
False
To achieve the greatest endurance in a practical setting the aircraft should be operated at:
Vs1
Va
Best glide speed
Vne
