Hybrid rocket fuels combine solid and liquid propellants to create thrust for rockets. The solid fuel provides a stable source of energy, while the liquid oxidizer, such as liquid oxygen or nitrous oxide, enhances combustion. This combination allows for better control over the thrust and burn rate compared to traditional solid fuels. One advantage of hybrid rockets is their safety and simplicity. The solid fuel is less hazardous to handle than liquid fuels, and the liquid oxidizer can be turned on or off, allowing for precise adjustments during flight. This technology is used in various applications, including spacecraft and suborbital flights.