A group of tertiary amine azides are useful as hypergolic fuels for hypergolic bipropellant mixtures. The fuels provide higher density impulses than monomethyl hydrazine (MMH) but are less toxic and have lower vapor pressures that MMH. In addition, the fuels have shorter ignition delay times than di
A group of tertiary amine azides are useful as hypergolic fuels for hypergolic bipropellant mixtures. The fuels provide higher density impulses than monomethyl hydrazine (MMH) but are less toxic and have lower vapor pressures that MMH. In addition, the fuels have shorter ignition delay times than dimethylaminoethylazide (DMAZ) and other potential reduced toxicity replacements for MMH.
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1. A hypergolic bipropellant combination comprising an oxidizer and a fuel, said fuel comprising an amine azide chemical having the structure: wherein X is H or CH3 and R2 is selected from the group consisting of: CH3, CH2N3, CHCHN3, and with the proviso that when X is H, R2 is OH3. 2. The hypergol
1. A hypergolic bipropellant combination comprising an oxidizer and a fuel, said fuel comprising an amine azide chemical having the structure: wherein X is H or CH3 and R2 is selected from the group consisting of: CH3, CH2N3, CHCHN3, and with the proviso that when X is H, R2 is OH3. 2. The hypergolic bipropellant combination of claim 1, further comprising a gellant mixed with the fuel or the oxidizer. 3. The hypergolic bipropellant combination of claim 1, wherein the oxidizer is selected from IRFNA, hydrogen peroxide, nitrogen tetroxide, and hydroxyl ammonium nitrate. 4. The hypergolic bipropellant combination of claim 1, wherein the fuel is a mixture comprising the amine azide chemical as an additive. 5. The hypergolic bipropellant combination of claim 1, comprising at least a second amine azide chemical having a structure of one of structures I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, or XIII: 6. The hypergolic bipropellant combination of claim 5, further comprising a gellant mixed with the fuel or the oxidizer. 7. The hypergolic bipropellant combination of claim 5, wherein the oxidizer is selected from IRFNA, hydrogen peroxide, nitrogen tetroxide, and hydroxyl ammonium nitrate. 8. The hypergolic bipropellant combination of claim 5, wherein the fuel is a mixture comprising the amine azide chemical as an additive.
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