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Why do V speeds change with weight?
Maneuvering speed is based on the airplane being at gross weight. Airplanes flown at weights below their gross weight require less lift for straight and level flight. Less lift means the airplane can be flown at a smaller angle of attack.
Does VA increase with weight?
Va does NOT vary with weight. Va does NOT guarantee you will stall before doing structural damage. Va does NOT protect against negative G loads. It is only when Va is equal to VsRoot(n) that you can say it will stall before exceeding the positive limit load factor.
Is lift equal to weight in a turn?
This is done by increasing the angle of attack until the vertical component of lift is again equal to the weight. The fact that the vertical component of lift must be equal to the weight to maintain altitude is an important fact to remember when making constant altitude turns.
How does weight effect VA?
Weight Change and Va. Airplanes flown at weights below their gross weight require less lift for straight and level flight. Less lift means the airplane can be flown at a smaller angle of attack. In other words, an airplane at 2,500 pounds may require a 4.5 degree angle of attack at 110 knots to remain in level flight.
Are there any airspeeds that are never correct?
These airspeeds are never correct because we are only at gross weight and 1G sitting on the ramp. If you happen to be loaded to gross weight, as soon as you start your engine, you are burning fuel and your weight is going down. And if you are anything but straight and level in the air, you are not at 1G.
What happens if you try to lower the airspeed?
Attempting to lower the gear at speeds greater than VLE could result in damage, such as losing a gear door. If you’re in an emergency situation, however, one where airspeed is increasing toward redline and the ground is getting rapidly closer, don’t worry about the gear doors.
When to use limiting and performance airspeeds?
To know, heed, and use the limiting and performance airspeeds, you have to know what the IAS will be when converted from CAS. Most airplanes built after the mid-1970s give performance and limiting airspeeds in IAS. True airspeed (TAS) is the final velocity variation.
How does the weight of an aircraft affect its performance?
Stall speed, maximum range airspeed, maximum endurance airspeed, maximum distance and minimum sink glide speeds, rate of climb, and manoeuvring speed are all examples of aircraft performance tied directly to aircraft weight. Back in ground school we learned about the four forces involved in aircraft flight: lift, weight, thrust, and drag.