Electromagnetic Levitation Quadcopter

TL;DR

A quadcopter powered by electromagnetic levitation is able to fly and carry weight due to repulsion between spinning magnets and induced magnetic fields.

Transcript

How much does this thing weigh? -Well, try to pick it up. -Okay. Alright. -Be nice to it -105 lbs -105 lbs -It consists of four motors connected up to these spinning magnet arrays and if you spin these fast enough it will actually levitate. -That's correct. -Let's see if we can do it Ready? Let's fire it up -It's lifting. -Okay, it's flying now. -I... Read More

Key Insights

• 🏑 Electromagnetic levitation in the quadcopter relies on the repulsive force between spinning magnets and induced magnetic fields.
• 😒 The use of a Halbach array enhances the magnetic field strength for improved lift.
• 🥵 The induced currents in the copper dissipate energy as heat.
• 🚂 Electromagnetic levitation has been applied to various transportation systems such as Maglev trains and hoverboards.

Questions & Answers

Q: How does electromagnetic levitation work in the quadcopter?

The quadcopter utilizes spinning magnets and induced magnetic fields in a copper sheet. The spinning magnets induce currents in the copper, creating a magnetic field that opposes the change. This repulsion force leads to levitation if the rotors spin fast enough.

Q: What is the purpose of the copper sheet in electromagnetic levitation?

The copper sheet in the quadcopter's design acts as a conductor to induce currents when exposed to changing magnetic fields. These induced currents create a magnetic field that opposes the spinning magnets, resulting in levitation.

Q: How is heat generated in the quadcopter during electromagnetic levitation?

The current induced in the copper encounters resistance, causing the energy to dissipate as heat. The copper can become hot but is not excessively hot to touch for a brief period.

Q: What is a Halbach array and why is it used?

A Halbach array is a special magnet configuration that channels the magnetic field to one side, increasing its strength. It is used in the quadcopter's rotors to enhance the magnetic field on the bottom side and almost eliminate it on the top, facilitating lift.

Summary & Key Takeaways

• Electromagnetic levitation allows a quadcopter to fly by utilizing the repulsive force generated between spinning magnets and induced magnetic fields in a copper sheet.

• The levitation process involves the creation of a rotating magnetic field in the copper, induced by the spinning magnets.

• The quadcopter's ability to carry weight is due to the repulsive force created between the magnetic fields.