Fayme Chandonnet Quadcopter June 11th, 2018 - 19:34:50
You may have seen some pretty amazing flying vehicles these days. UAVs (unmanned aerial vehicles) are becoming more and more common. The hobby is also getting more and more easy to get into. But with the great range of models and brands you may wonder what is the best quadcopter to start out with. There are a several variations of the multirotor family. The most common is the quadcopter like the DJI Phantom. A quadcopter uses four motors and propellers to generate the thrust necessary to lift the aircraft. It can be more mechanically simple than a traditional helicopter that requires a tail rotor to counteract the angular torque produced by the main rotor and the main rotor does not require collective pitch and other mechanical complexities. With a quadcopter the pitch is fixed and the flight control is achieved by actively changing the motor RPM (revolutions per second).
They appeal to all everybody and all ages too! Quadcopters are a huge amount of fun and they arent just for boys either! Girls also love being "pilots" and enjoying the thrill of commanding their drone either just around the skies or performing intricate stunts and manoeuvres. And these bad boys of the sky arent just for kids either. From as young as 7 years old right up to grandparents there is a drone or quadcopter that will suit. There is an absolutely HUGE range of quadcopters for sale that will cater to any budget and also please the most demanding of "pilots." From a small entry level quadcopter that can fit into the palm of your hand right up to an incredibly advanced... and expensive version that costs more than the average family car! Want four propellers? No problem? How about an eight propeller octocopter? Too easy! Want a protective circular cage around your drone or maybe perhaps even in the shape of a fighter jet? There are so many different options available to you! Just go down to your favorite RC store choose what you want and you are ready to go!
Now then for the outer assembly - more safety is garnered by outer bearings but reduced friction is the key thus electromagnetic system makes sense but due to weight perhaps not 100% magnetic. This article explains the concept of Thrust Bearings and the combinations I propose we employ. "Design Fabrication and Performance of Foil Gas Thrust Bearings for Microturbomachinery Applications" by Brian Dykas Robert Bruckner Christopher DellaCorte Brian Edmonds and Joseph Prahl. (NASA/TM-2008-215062 January 2008; GT2008-50377). Currently we know that the quadcopter design is probably one of the most stable designs yet but most quadcopters are only toys small drones and have a limited payload. If we want these types of designs to fly around people heavy weight or become our future flying cars and air taxis commuter shuttles well need near 100% safety that means current rotorcraft components may not be viable. Please think about the future maybe you can have a flying car after all?
This design gave rise to the latest quadcopters that are available on the market for hobbyists of all ages who love to fly them. UAVs can be classified into many different types depending on the purpose for which they are used. However not all of these are available on the market for general public. The ones available on the market are usually called quadcopters that come with or without a camera and GPS meant for fun or entertainment purposes. Some commercial units are also made to achieve objectives specific to a company or business. However the more advanced machines used by the US air force are classified into three main types;