Apparatus for a vehicle

An apparatus for a projectile, the projectile configured to be launched from a weapons barrel, wherein in operation of the apparatus in association with the projectile under predetermined operating conditions the projectile has a center of pressure, said predetermined operating conditions including an operating airspeed for the projectile greater than a threshold airspeed, the apparatus defining a reference axis, the apparatus comprising:

• a body inflatable from a deflated configuration having a first volume to an inflated configuration having a second volume, said second volume being greater than said first volume;
• an inflation system for selectively inflating said body from said deflated configuration to said inflated configuration;
• external walls deployable from an undeployed configuration to a deployed configuration responsive to said body being inflated from said deflated configuration to said inflated configuration;
• wherein in said undeployed configuration and at said operating airspeed, said center of pressure is located at a first position with respect to the projectile along said reference axis;
• and
• wherein in said deployed configuration said external walls provide a deployed external surface geometry exposed to an airflow corresponding to said operating airspeed, such that said center of pressure is located at a second position with respect to the projectile along said reference axis, said second position being different from said first position.