How much space do I need to launch my rockets?

The UK Rocketry association suggests the following sizes depending on your rocket motor size.

The table below lists the minimum site dimensions for each motor impulse class. The distances stated are the diameter of a circle centred at the location of the launch pad. The rocket flight should be planned such that all reasonable steps are taken to ensure that the rocket lands and may be recovered in this area.

For flights with increased safety considerations, the next largest distance must be used after the row associated with the Total Impulse. Examples of such flights where these considerations come into play are:

• The flight involves a boosted glider or winged recovery.
• The flight is considered Research or Experimental.

The site minimum dimension should be the maximum of:

• The distance from the table below, noting the previous statement regarding special flights.
• Half the maximum expected flight altitude of any Rocket to be flown.