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Monday, January 9, 2023

on video What is Ground Effect? | Impact on Aircraft & Helicopters | Understanding Downwash & Induced Drag


  we look at what is Ground Effect and its impact on Aircraft and Helicopters. 

When an aircraft or helicopter is close to the ground during takeoff or landing, more lift is created on the wings or on the main rotor. This is because of a reduction in the wing tip vortices which has an impact on the downwash at the training edge of the wings. 

These factors come together to improve the lift on the aircraft and helicopter.

What could go wrong because of this? Watch to find out!

Love it or hate it, ground effect plays a big part in your landings (and takeoffs too). If your approach to landing is too fast, ground effect can really get the best of you, as you float, and float, and float down the runway.

How It Happens

We've all been there. You start your flare for landing, you're too fast, and you wait for your wheels to touch down. You wait a little longer, and a little longer, and pretty soon, you're halfway down the runway.

That floating happens because of ground effect. But what it really comes down to are wingtip vortices, and what happens to them as your wings get close to the ground.

How The Ground Limits Wingtip Vortices

Ground effect basically comes down to how big your wingtip vortices are, and how much downwash they're creating. Take a look at the Cirrus SR-22 examples below. Notice the difference in wingtip vortex size at altitude, vs. near the ground?



  we look at what is Ground Effect and its impact on Aircraft and Helicopters. 

When an aircraft or helicopter is close to the ground during takeoff or landing, more lift is created on the wings or on the main rotor. This is because of a reduction in the wing tip vortices which has an impact on the downwash at the training edge of the wings. 

These factors come together to improve the lift on the aircraft and helicopter.

What could go wrong because of this? Watch to find out!

Love it or hate it, ground effect plays a big part in your landings (and takeoffs too). If your approach to landing is too fast, ground effect can really get the best of you, as you float, and float, and float down the runway.

How It Happens

We've all been there. You start your flare for landing, you're too fast, and you wait for your wheels to touch down. You wait a little longer, and a little longer, and pretty soon, you're halfway down the runway.

That floating happens because of ground effect. But what it really comes down to are wingtip vortices, and what happens to them as your wings get close to the ground.

How The Ground Limits Wingtip Vortices

Ground effect basically comes down to how big your wingtip vortices are, and how much downwash they're creating. Take a look at the Cirrus SR-22 examples below. Notice the difference in wingtip vortex size at altitude, vs. near the ground?


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