Abstract: An impulse rocket propellant is comprised of highly hydrated minearl salts such as boric acid hydrate HBO.sub.2.H.sub.2 O and a plaster forming agent comprising calcium oxide hydrate CaO.H.sub.2 O and sodium sulfate hydrate Na.sub.2 SO.sub.4.10H.sub.2 O, all of which are compounded and intimately commingled with a heat conducting inorganic fiber such as glass wool. When these compounds are allowed to dry, loaded into suitable rocket devices, and instantaneously heated, the water of hydration of the hydrated mineral instantaneously vaporizes into steam which can be used to propel the rocket. The resulting unhydrated mineral salts are entrained within the steam. Upon coming into contact with the atmosphere, the steam condenses into fine water droplets into which the entrained salts dissolve and ionize.

Abstract: An impulse rocket propellant is comprised of highly hydrated mineral salts such as boric acid hydrate HBO.sub.2.H.sub.2 O and a plaster forming agent comprising calcium oxide hydrate CaO.H.sub.2 O and sodium sulfate hydrate Na.sub.2 SO.sub.4.10H.sub.2 O, all of which are compounded and intimately commingled with a heat conducting inorganic fiber such as glass wool. When these compounds are allowed to dry, loaded into suitable rocket devices, and instantaneously heated, the water of hydration of the hydrated mineral salts instantaneously vaporizes into steam which can be used to propel the rocket. The resulting unhydrated mineral salts are entrained within the steam. Upon coming into contact with the atmosphere, the steam condenses into fine water droplets into which the entrained salts dissolve and ionize.

Abstract: An improved dynamic current interruption-type flashover indicator responsive to lightning strikes for releasing from the tip of arc horns located on power transmission towers and for interrupting the resulting dynamic current. The present invention utilizes a uniquely designed propellant having a formed center hole extending the longitudinal length of the propellant and containing therein a fuse wire extending from a separation plate at one end and engaging an inserted pin at the other end. When lightning strikes, the resulting arc is lead into and throughout the formed center hole by the fuse wire, the fuse wire melts and the temperature of the arc causes the propellant to vaporize uniformly into steam and the resulting gaseous force causes the indicator to become rocket-like and to suddenly leave the tip of the arc horn.