摘要:
The incorporation of a nitrated pentaerythritol additive selected from theono-, di-, tri-, and tetra-nitrated pentaerythritols into hydrazine is effective in lowering the freezing point of the combination while enhancing the performance of the monopropellant by contributing to the total energy of the monopropellant combination. Hydrazine content varies from about 65 to 95 weight percent while the additive of a nitrated pentaerythritol varies from about 5 to about 25 weight percent. An optional additional additive of methyl alcohol from about 5 to about 20 weight percent can be employed with a corresponding adjustment in weight percent of hydrazine when said additive of methyl alcohol is employed in addition to said additive of said nitrated pentaerythritol.
摘要:
Disclosed is a method for the prevention of the formation of ammonia as a product in the reaction of hydrazine and a halogen oxidizer used in a liquid-propelled rocket engine and in chemical laser pumping systems. The method employs vanadium pentafluoride as an additive up to about 1% to the halogen oxidizer to thereby shift the equilibrium of the reaction between the hydrazine and the halogen oxidizer so that no ammonia is produced.
摘要:
1. A gelled mechanically stable high energy fuel composition comprising a hydrazine selected from the group consisting of hydrazine, unsymmetrical dimethyl hydrazine and mixtures thereof and an amount of metal platelets effective to produce a mechanically stable gel, said platelets having a diameter of less than about 44 microns and an average diameter of about 1 micron, and said metal platelets being composed of a metal selected from the group consisting of aluminum, beryllium and aluminum-beryllium alloy.
摘要:
A curable homogeneous gas-generating composition composed essentially of oxalyl dihydrazide coolant combined with: (a) a perchlorate oxidizer selected from the group consisting of ammonium perchlorate, the alkali metal perchlorates, and the alkali earth metal perchlorates, (b) a combustible fuel binder, and (c) propellant adjuvants.A process for the preparation of oxalyl dihydrazide is also disclosed.The gas-generating compositions of the present invention have greatly improved combustion characteristics and exhibit reduced flame temperatures.
摘要:
The use of methoxylamine perchlorate (CH.sub.3 ONH.sub.2.HClO.sub.4) as andditive to exothermally decomposing liquid monopropellants such as hydrazine and hydrazine water mixtures to maintain energetic monopropellants and at the same time lower the freezing point of the monopropellants, thereby rendering the monopropellants usable in gas generators at very low temperatures.
摘要:
Hypergolic solid oxidizer and fuel systems are provided whereby ignition and combustion of the separate solid fuel and oxidizer grains can be obtained by contacting of the respective grains. Suitable solid oxidizers include NOBrF4, LiClO4 . NOF, MgClO4 . 2NOF, NO2ClO4, NO2BF4, (NO2)3 (AlClO4)6, NO2AsF6, NO2SbF6, and NO2PF6. Suitable solid fuels include LiAlH4, LiBH4, Li2AlH5, BeH2, LiH2 . BeH2, tetramethylammonium hydrotriborate, triaminoguonidinium diazine, diaminotetrazine, 4-amino-3, 5dihydrazine-1,2,4-triazole, N2H4(BH3)2, Mu (hydrazino)decaborane, 3,6-dihydrazine-s-tetrazine, NH4N3, (CH3)4NB3H8 and borane complexes with ammonia such as B10H12 . 2NH3. Completely fluorinated polyethylene resin is a suitable binder for the oxidizer system.
摘要翻译:提供了全固态氧化剂和燃料系统,通过使各颗粒的接触可以获得单独的固体燃料和氧化剂颗粒的点燃和燃烧。 合适的固体氧化剂包括NOBrF4,LiClO4。 NOF,MgClO 4。 2NO,NO2ClO4,NO2BF4,(NO2)3(AlClO4)6,NO2AsF6,NO2SbF6和NO2PF6。 合适的固体燃料包括LiAlH4,LiBH4,Li2AlH5,BeH2,LiH2。 BeH2,氢化四甲基铵,三氨基胍二嗪,二氨基四氮嗪,4-氨基-3,5-二肼-1,2,4-三唑,N 2 H 4(BH 3)2,mu-(肼基)十硼烷,3,6-二肼四氢嗪 ,NH 4 N 3,(CH 3)4 NB 3 H 8和与氨的硼烷络合物如B10H12。 2NH3。
摘要:
THE INVENTION RELATES TO A PROCESS OF PREPARING ANHYDROUS HYDRAZINUM DIPERCHLORATE BY REACTING HYDRAZINIUM MONOHYDROCHLORIDE OR DIHYDROCHORIDE, CARBAZIC CID OR HYDROZINIUM CARBAZATE WITH EXCESS CONCENTRATED PERCHLORIC ACID. ANHYDROUS HYDRAZINIUM DIPERCHLORATE IS USEFUL AS AN OXIDIZER IN SOLID PROPELLANT COMPOSITIONS.
摘要:
An explosive adapted for field mix and comprising about ten parts by weight of a first ingredient in solid form which in ammonium nitrate or mixtures of ammonium nitrate with a minor or equal amount of other oxidizer salt such as ammonium perchlorate or the like and about 1 part by weight of a second ingredient in liquid form which comprises about equal parts of hydrazine and water by weight.
摘要:
THE NOVEL COMPOUND DIAMMONIUM HYDRAZINIUM TETRAPERCHLORATE, HAVING THE FORMULA (NH4)2N2H6(ALO4)4, PREPARED BY REACTING HYDRAZINE HYDROCHLORIDE WITH ANHYDROUS AMMONIUM PERCHLORATE DISSOLVED IN LIQUID ANHYDROUS HYDROGEN FLUORIDE AT ABOUT AMBIENT TEMPERATURE IN A VESSEL, COOLING TO PRECIPITATE THE PRODUCT CRYSTALS, AND SEPARATING THE PRODUCT CRYSTALS FROM THE LIQUID PHASE. THE PRODUCT IS USEFUL AS AN OXIDIZER IN ROCKET PROPELLANT COMPOSITIONS AND IN CURED ROCKET PROPELLANTS, AND AS A CHEMICAL OXIDIZING AGENT.
摘要:
Hydrazine is catalytically decomposed in a primary reaction chamber. During low thrust operation all of the decomposition products flow directly to the nozzle. During high thrust operation an oxidizer is reacted with a major portion of the decomposed hydrazine in the central portion of the secondary reaction chamber downstream of the primary reaction chamber. The remaining decomposed hydrazine is directed as a buffer layer along the inner surface of the secondary reaction chamber''s outer wall, to serve as a coolant.