07 Rate Of Climb

Question 1

What is the equation for the Rate of Climb (Roc) and how does this relate to power?

Answer 1

Roc = AoC x TAS

Roc = ((T - D) x TAS) / W

Roc = ((T x TAS) - (D x TAS)) / W

Roc = (Pa - Pr) / W

Question 2

What is the nemonic for determining whether Power or Thrust is associated with Angle of Climb or Rate of Climb?

Answer 2

PR AT

Power / Rate of Climb

Angle of Climb / Thrust

Question 3

Describe Vy and its relation to Vx

Answer 3

• Vy is the speed for the best Rate of Climb

- Vy > = Vx

Question 4

Describe the Absolute Ceiling

Answer 4

The Absolute Ceiling is the altitude at which Vx = Vy

Question 5

Describe the Service Ceiling and what is it for:

• Jet
• Prop

Answer 5

• Services Ceiling is the point at which the Rate of Climb for an AC drops to a certain amount
• Jet: 500 ft/min
• Prop: 100 ft/min

Question 6

What are the factors which effect Rate of Climb, Vy and how?

Answer 6

• Increasing AC Mass: Decrease Roc, Increase Vy
• ‘Dirtying’ the AC Config: Decrease Roc, Decrease Vy
• Inc. Alt. Temp. CAS: Decrease Roc, Decrease Vy
• Inc. Alt. Temp. TAS: Decrease Roc, Increase Vy
• Engine Failure: Decrease Roc, Decrease Vy

Question 7

What is the equation for the Angle of Climb?

Answer 7

Sin(AOA) = (T-D) / W

Question 8

What can said if the Angle of Climb is small?

Answer 8

• If Angle of climb is small then:
• G = (T-D) / W
• G% = ((T-D) / W) * 100