Apparatus for releasing fluid to the atmosphere

An apparatus for releasing a fluid to the atmosphere, the apparatus comprising:

• an elongate housing for the fluid, the housing being adapted to spin about a longitudinal axis thereof as it falls through the atmosphere;
• and
• a mechanism for causing the fluid to be released to the atmosphere from the housing.

An apparatus for releasing a fluid to the atmosphere, the apparatus comprising:

• a polymer housing for the fluid;
• a mechanism for causing an the fluid to be released to the atmosphere from the housing;
• wherein the polymer comprises a component that is reflective to infrared radiation so as to prevent melting of the housing polymer during immersion in or whilst in proximity to flame.

A housing for a projectile, the housing having a generally cylindrical outer surface, the surface comprising one or more circumferential grooves extending at least partway around the housing.

An apparatus for releasing a fluid to the atmosphere, the apparatus comprising a housing having an outer surface that is generally cylindrical about a longitudinal axis, the surface comprising a plurality of longitudinally extending recesses.

An apparatus for releasing a fluid to the atmosphere, the apparatus comprising:

• a housing for the fluid;
• a mechanism for causing the fluid to be released to the atmosphere from the housing;
• wherein the housing comprises a biodegradable polymer, or a polymer that has been adapted to biodegrade.