New fuel and propulsion technologies are being proposed to ï¬ nd suitable alternatives to fossil fuels and new green energy production methods, such as batterypowered and hydrogen-powered aircraft, hybrid systems, and synthetic fuels. Various processes can produce hydrogen, but achieving a low maximum take-off mass is the biggest challenge. Fuel cell aircraft have a low power-to-weight rati…
Matter can be defined as anything that has mass and has volume and is the substance of which physical objects are composed. Essentially, it is anything that can be touched. Mass is the amount of matter in a given object. Typically, the more matter there is in an object the more mass it will have. Weight is an indirect method of determining mass but not the same. The difference between mass and …