Cruise

Question 1

What is the equation for specific fuel consumption for a jet?

Answer 1

Fuel flow / thrust

Question 2

What is the units for specific fuel consumption?

Answer 2

Kg/hr/N

Question 3

What is the equation for specific fuel consumption for a prop?

Answer 3

Fuel flow / Brake horse power

Question 4

Rate of climb is proportional to power available minus blank.

Answer 4

Power required.

Question 5

What RPM % is the lowest SFC achieved?

Answer 5

90%

Question 6

Whats the equation for specific air range using fuel flow?

Answer 6

SAR = TAS/Fuel flow

Question 7

Whats the equation for specific air range using specific fuel consumption?

Answer 7

SAR = TAS / SFC X drag or power

Question 8

What is the specific range for a piston aircraft?

Answer 8

1/SFC x drag

Question 9

At what speed do you get the best range in a jet?

Answer 9

1.32 VMD

Question 10

At what speed do you get the best range for a prop aircraft?

Answer 10

1.32 VMP or VMD

Question 11

Do we want a high or low endurance?

Answer 11

High.

Question 12

Whats the equation for jet endurance?

Answer 12

1/SFC x Drag

Question 13

Specific range increases until when?

Answer 13

Optimum altitude.

Question 14

Whats the equation for cost index?

Answer 14

Cost index = cost of time / cost of fuel

Question 15

Which cruise system gives minimum fuel consumption?

Answer 15

Max range.

Question 16

Step climbs are used to improve blank.

Answer 16

Range.

Question 17

Long range speed bs max range speeds means a higher what?

Answer 17

Cost index.

Question 18

Blank increases up to an optimum altitude then decreases.

Answer 18

Endurance.

Question 19

How does increasing pressure altitude influence VMCA?

Answer 19

VMCA decreases.

Question 20

On a twin engined a/c, if an engine failure occurs above the OEI ceiling, the least rate of sink occurs when the aircraft is flying at the best angle/rate of climb speed.

Answer 20

Angle.