Induced drag of ground effect-vehicle

In summary, the conversation discusses the concept of model ground effect vehicles and how they fly close to the ground, causing a "100% ground effect" which eliminates airflow under the wing. The conversation then shifts to discussing how to calculate induced drag for a wing, disregarding other factors such as stability and tail/rudder. The question is raised about how to calculate the drag of a bump with no airflow underneath, and the analogy is made between an object moving in a static fluid and a static object in a moving fluid.
  • #1
Jurgen M
Model ground effect-vehicle shape like on picture fly above flat surface like floor sports hall or ice, wing end plates and trailing edge is so close to the ground(1mm) we can assume airlfow under the wing is zero and has stagnation pressure("100% ground effect").
How to calculate induced drag?

(Dont debate about stability,tail/rudder will fix this.I want analyze induced drag only for wing)
Untitledju.png


Here is some models
 
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  • #2
Jurgen M said:
How to calculate induced drag?
If there is no flow around the tip of the wing, then how can there be an induced drag ?
 
  • #3
How would you calculate the drag of a bump, of the same shape and size, on the same flat surface, which has actually no air flow under it? An object moving in a static fluid is the same as a static object within a moving fluid.
 

1. What is induced drag of ground effect-vehicle?

Induced drag of ground effect-vehicle refers to the drag force experienced by an aircraft or other vehicle when flying close to the ground, also known as ground effect. It is caused by the interaction between the wings and the ground, resulting in a reduction of the overall drag force.

2. How does ground effect impact induced drag?

Ground effect reduces the induced drag of an aircraft by creating a cushion of air between the wings and the ground. This cushion decreases the amount of air that flows around the wingtips, which is the main source of induced drag. As a result, the overall drag force is reduced.

3. What factors affect the induced drag of ground effect-vehicle?

The induced drag of ground effect-vehicle is affected by several factors, including the shape and size of the wings, the speed and altitude of the vehicle, and the type of surface it is flying over. These factors can impact the strength and size of the ground effect and, therefore, the amount of induced drag experienced by the vehicle.

4. How does ground effect impact the performance of an aircraft?

Ground effect can significantly impact the performance of an aircraft by reducing the induced drag and increasing lift. This allows the aircraft to fly at a lower speed and with less power, resulting in improved fuel efficiency and longer range. However, it can also affect the stability and control of the aircraft, requiring pilots to be aware of and adjust for these changes.

5. How can engineers reduce the induced drag of ground effect-vehicle?

Engineers can reduce the induced drag of ground effect-vehicle by designing wings with a high aspect ratio and an optimal wing shape. They can also use winglets or other devices to minimize the formation of vortices at the wingtips, which contribute to induced drag. Additionally, adjusting the height and shape of the vehicle's body can also help reduce induced drag in ground effect.

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