What kind of propulsion is typically used for hobby rocketry?

The use of solid propellant in hobby rocketry is primarily favored due to its simplicity and reliability. Solid propellant systems contain the oxidizer and fuel together in a solid state. This allows for easier handling and preparation compared to liquid propellants, which require more complex fueling procedures and safety precautions.

In addition, solid rocket motors are generally more compact and simpler to manufacture, making them accessible for hobbyists. They are also easier to store, as they do not require the same environmental controls as liquid propellant, which can be sensitive and dangerous if not managed correctly.

Solid propellants ignite and burn steadily, providing a consistent thrust profile that hobbyists can easily predict and calculate, enabling more straightforward design and planning of rocket flights. These factors, combined with a good performance-to-cost ratio, make solid propellant the preferred choice in the hobby rocketry community.