Every year we see an increase of wildfires across the globe. Planes and helicopters are expensive to run. with the FFDrone the affordability for Fire Depts to own them and operate them with minimal training will enable wild fires to be tackled quickly and effectively without putting lives at risk.
We are aiming to have the project off the ground as soon as possible so we can not only help to save lives but also prevent injury and the destruction of property. We can only do this with your help so please share this with everyone so we can hit our target. We only get your donation if we hit the target within 60 days. So please ask everyone you know to pledge no matter how small the amount it all adds up to the goal.
The Physics of Why Bigger Drones Can Fly Longer
YOU CAN GET a drone in a wide range of sizes. Some of them fit in your palm (like the Syma X20) while others are quite large. But have you noticed anything about the flying time? Many of the super small drones have flight times that are less than five minutes. The larger drones (like the DJI Phantom 4) have a maximum flight time of closer to a half hour. Why would a larger, presumably heavier drone be able to last longer in the air?
If you want to take a deep look at the physics of drones, you can read how varying the power to four rotors allows the vehicle to fly in every different way. We also looked at the power needed to hover using very basic physics models—a question that actually started with our estimation of the power needed for the SHIELD helicarrier to fly (it’s huge).
Let’s recap how we can estimate the power need to hover a drone. Imagine you have a drone with spinning rotors. It actually doesn’t matter if you have just one rotor (like a helicopter) or four like a quadcopter or even eight like an octocopter. What really matters is that the rotors take stationary air above the vehicle and push this air down. By increasing the momentum of the air, the rotor exerts a force on the air and the air pushes back on the rotor. If this air force is equal to the weight of the vehicle, the drone will hover. This leads to the following expression for the air speed of a hovering drone. www.kickstarter.com
