Ground effect

Question 1

Ground effect

Answer 1

• Is the result of the earths surface altering the airflow patterns about the airplane
• Phenomenon that reduces induced drag when the
  airplane is within 1 wingspan of the ground
• Prominent on takeoffs and landing

Question 2

Effects of ground effect when taking off

Answer 2

• Aircraft may become airborne before the rotation speed
• An aircraft may climb out of ground effect and sink back to the ground

Question 3

Effects of ground effect when landing

Answer 3

• Causes the aircraft to float down the runway
• Makes it difficult to sink