Contents
Where can you normally find the performance charts for your plane?
Where can you normally find the perfomance charts for your airplane? In the performance section of your airplane’s POH.
What determines aircraft climb performance?
Climb performance is directly dependent upon the ability to produce either excess thrust or excess power. Earlier in the book it was shown that an increase in weight, an increase in altitude, lowering the landing gear, or lowering the flaps all decrease both excess thrust and excess power for all aircraft.
Who determines VMC for a particular aircraft?
VMC is highest, therefore, when the critical engine propeller is windmilling at the low pitch, high rpm blade angle. VMC is determined with the critical engine propeller windmilling in the takeoff position, unless the engine is equipped with an autofeather system. Figure 12-21.
How do you calculate pressure altitude on a cruise?
Find pressure altitude
- Subtract the current altimeter setting from the standard pressure of 29.92.
- Multiply by 1,000.
- If you have a negative number, subtract it from the field elevation. Add a positive number.
What is the best climb rate?
Best Rate-of-Climb:
- Best rate of climb, or Vy, maximizes velocity to obtain the greatest gain in altitude over a given period of time.
- Vy is normally used during climb, after all obstacles have been cleared.
- It is the point where the largest power is available.
- Occurs above L/Dmax for a jet.
- Occurs at L/Dmax for a prop.
Which is the best rate of climb for an airplane?
For the purpose of initial climb however, we are concerned with our aircraft’s performance in order to get away from the ground Max excess thrust results in the best angle of climb Best rate of climb, or Vy, maximizes velocity to obtain the greatest gain in altitude over a given period of time
Why do you need a specific climb profile?
Certain conditions will call for a specific climb profile (Vy or Vx) Increased airflow over the engine while at high power One of the most basic considerations with regard to aircraft performance is weight, as it is a principle of flight
Is there a cruise performance table in the flight manual?
The Supplemental Airplane Flight Manual has a Cruise Performance table similar to the one provided in the original POH, but it does not include cruise airspeeds! Furthermore, I often fly around at gross weights less than 1900 lbs.
How to calculate the performance of an aircraft?
Fill a spread sheet with columns containing the desired pressure altitude, temperature, aircraft weight, and engine horsepower. For each condition (row), compute the atmospheric density using U.S. Standard Atmosphere equations. Using the power, aircraft weight, and atmospheric density, compute the value of the function . (Equation 10.)