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Aerodynamics 1- What is the effect of Weight, Density altitude, Wind and runway slope on landing...

Aerodynamics

1- What is the effect of Weight, Density altitude, Wind and runway slope on landing distance?

2- A 20% percent excess landing speed would cause a _____ percent increase in landing distance.

3- At sea level an aircraft has a minimum landing distance of 2000ft. What would be the minimum landing distance of the aircraft at 5000ft density altitude.

4- What is the effect on landing velocity and landing distance if there is a 15% increase of gross weight?(the answer should be given in percents)

Engineering   Mechanical-Engineering   
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The answers to the first two questions are described in the images below:

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