Whats the difference between a ramjet and a rocket?
There are many differences between a ramjet and a rocket. The main difference is that the ramjet uses the oxygen in the atmosphere as its oxidizer; whereas, a rocket carries its oxidizer on board. This may sound like a simple difference, but it has a huge impact on the design of the vehicle. The weight saved in a ramjet designed vehicle can be reincorporated to increase system reliability and safety, such as increased factors of safety on structures and greater redundancy in subsystems (e.g. avionics).
