SOLID HYPERGOLIC PROPELLANT SYSTEMS

• US 3,797,238 A
• Filed: 06/04/1965
• Issued: 03/19/1974
• Est. Priority Date: 06/04/1965
• Status: Expired due to Term

• Current Assignee: Bernard L. Iwanciow, William J. Lawrence
• Original Assignee: Bernard L. Iwanciow, William J. Lawrence
• Inventors: Iwanciow, Bernard L., Lawrence, William J.
• Primary Examiner(s): Padgett, Benjamin R.
• Application Number:
  US04/461,555
• Time in Patent Office: 3,210 Days
• Field of Search: 149/2,22,19,20,74,36 60/219
• US Class Current: 60/219
• CPC Class Codes: C06B 43/00 Compositions characterised by explosive or thermic constituents not provided for in groups C06B25/00 - C06B41/00
• CPC Class Codes: C06B 47/08 a component containing hydrazine or a hydrazine derivative
• CPC Class Codes: C06B 47/10 a component containing free boron, an organic borane or a binary compound of boron, except with oxygen

Abstract

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.

Claims

2. The process of claim 1 wherein said oxidizer grain contains an ignition aid comprising an alkali metal hexafluorobromate.

3. The process of claim 1 wherein said oxidizer grain contains from 5 to 12 percent by weight of a totally fluorinated polyethylene resin.

4. A hypergolic solid oxidizer grain consisting essentially of 64% NO2ClO4, 27% CsBrF6 and 9 percent totally fluorinated polyethylene.

5. The process of claim 1 wherein said fuel grain comprises a material selected from the group consisting of metal hydrides, tetramethylammonium hydrotriborate, diaminotetrazine, 4-amino-3, 5-dihydrazino-1,2,4 triazole, N2H4(BH3)2, Mu -(Hydrazino) decaborane, 3,6-dihydrazino-s-tetrazine, NH4N3, triaminoguanidinium diazide, (CH3)4NB3H8 and B10H12 . 2NH3.

6. The process of claim 5 wherein the fuel grain contains up to 50 percent by weight of polyethylene as a binder.

7. In a method for producing thrust from a reaction motor which comprises providing a solid oxidizer grain and a solid fuel grain within said reaction motor, said oxidizer and said fuel being members of an acid base pair capable of generating sufficient energy from an acid base reaction to active an oxidation-reduction reaction between said oxidizer and fuel;

placing said oxidizer and fuel grains in intimate contact within said reaction motor for sufficient time to initiate said oxidation-reduction reaction whereby gaseous combustion products are produced within said reaction motor and exhausting said gaseous combustion products from said reaction motor whereby a propulsive thrust is produced;

the improvement wherein said oxidizer grain comprises a material selected from the group consisting of NOBrF4, LiClO4 . NOF, MgClO4 . 2NOF, NO2ClO4, (NO2)3 (AlClO4)6, NO2AsF6, NO2SbF6 and NO2PF6.

8. The method of claim 7 wherein said fuel grain comprises a material selected from the group consisting of metal hydride, tetramethylammonium hydrotriborate, diaminotetrazine, 4-amino-3, 5-dihydrazino-1,2,4-triazole, N2H4(BH3)2, Mu -(hydrazino)decaborane, 3,6-dihydrazino-s-tetrazine, NH4N3, triaminoguonidinium diazide, (CH3)4NB3H8 and B10H12 . 2NH3.