Abstract: Methods and arrangements for tailoring rocket exhaust plume signatures of rocket exhaust systems are disclosed. The tailoring of the rocket exhaust plume signature is accomplished by providing and locating at least one structure having materials and/or additives that modify the radiant intensity pattern of the rocket exhaust plume upon ablation or melting into the rocket exhaust plume. The materials and/or additives can be manufactured or incorporated into preexisting ablative materials of the rocket exhaust system or be provided as stand-alone structures.

Abstract: Methods and arrangements for tailoring rocket exhaust plume signatures of rocket exhaust systems are disclosed. The tailoring of the rocket exhaust plume signature is accomplished by providing and locating at least one structure having materials and/or additives that modify the radiant intensity pattern of the rocket exhaust plume upon ablation or melting into the rocket exhaust plume. The materials and/or additives can be manufactured or incorporated into preexisting ablative materials of the rocket exhaust system or be provided as stand-alone structures.

Abstract: An extendable exhaust nozzle for rocket motors that can be deployed from a stored compact position to an extended position. The interior surface of the nozzle is provided with a thin layer of a nickel-titanium alloy that is characterized by its ability to revert back to its original shape, subsequent to being deformed. The alloy is applied to the nozzle surfaces while in extended form, and then the nozzle is folded and stored. It can then be deployed to its extended shape at any time by heating the nozzle.