1、 MIL-PRF-87930B 7-August 2013 SUPERSEDING MIL-PRF-87930A 24 November 1997 PERFORMANCE SPECIFICATION PROPELLANT, HYDRAZINE WATER (70 % HYDRAZINE 30 % WATER) AMSC N/A FSC 9135 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. METRIC Comments, suggestions, or questions o
2、n this document should be addressed to AFPA/PTPT, 2430 C Street, Bldg 70, Area B, Wright-Patterson AFB OH 45433-7632 or e-mailed to AFPA.PTPSwpafb.af.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/
3、assist.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87930B 2 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for h
4、ydrazine - water propellant blend, 70 percent hydrazine and 30 percent water by weight (H-70). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 or 4 of this specification. This section does not include documents cited in other sections of this spe
5、cification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3 or 4 of this specification, whether or not they
6、are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or co
7、ntract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-25604 Propellant, uns-Dimethylhydrazine MIL-PRF-26536 Propellant, Hydrazine MIL-PRF-27401 Propellant Pressurizing Agent, Nitrogen MIL-PRF-27404 Propellant, Monomethylhydrazine MIL-PRF-27407 Propellant Pressurizing Agent, Helium (Copies of these do
8、cuments are available online at https:/assist.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Bldg 4D, Philadelphia PA 19111-5094.) 2.3 Non-government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise spec
9、ified, the issues of these documents are those cited in the solicitation or contract. ASTM International ASTM D1068 Standard Test Methods for Iron in Water (DoD Adopted) ASTM D1193 Standard Specification for Reagent Water (DoD Adopted) ASTM D1976 Standard Test Method for Elements in Water by Inducti
10、vely-Coupled Argon Plasma Atomic Emission Spectroscopy Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87930B 3 ASTM D2276 Standard Test Method for Particulate Contaminant in Aviation Fuel by Line Sampling (DoD Adopted) ASTM E29 Standard Prac
11、tice for Using Significant Digits in Test Data to Determine Conformance with Specifications (DoD Adopted) ASTM E394 Standard Test Method for Iron in Trace Quantities Using the 1,10-Phenanthroline Method (Copies of these documents are available online at http:/www.astm.org or ASTM International, 100
12、Barr Harbor Drive, West Conshohocken PA 19428-2959). UNITED STATES ENVIRONMENTAL PROTECTION AGENCY (EPA) EPA 300.0 Determination of Inorganic Anions by Ion Chromatography. (Copies of these documents are available online at http:/water.epa.gov or call EPA New England Customer Call Center at (888) 372
13、-7341 for New England States or (617)918-111 for all others). 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein (except for related specification sheets), the text of this document t
14、akes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Chemical and physical properties. The chemical and physical properties of the propellant mixture shall conform to those listed in Table I
15、when tested according to the applicable test methods. 3.2 Limiting values. The following applies to all specified limits in this specification: For purposes of determining conformance with these requirements, an observed value or a calculated value shall be rounded off “to the nearest unit” in the l
16、ast right-hand digit used in expressing the specification limit according to the rounding-off method of ASTM Practice E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications. 3.3 Filter. A filter with a rating of at least 2 micrometer (m) nominal
17、and 10 m absolute rating shall be installed between the manufacturers plant system and the container to be filled for delivery. 3.4 Qualitative. The propellant shall be colorless, homogeneous liquid when examined visually by transmitted light. Provided by IHSNot for ResaleNo reproduction or networki
18、ng permitted without license from IHS-,-,-MIL-PRF-87930B 4 TABLE I. Chemical and physical properties. Properties Limits Test Paragraph Hydrazine (% by weight) 69 - 70 4.3.2 Water (% by weight) 30 min 4.3.2 Particulate (mg/L) 1.0 max 4.3.3 Chloride (% by weight) 0.0005 max 4.3.4 Aniline (% by weight)
19、 0.40 max 4.3.5 Iron (% by weight) 0.002 max 4.3.6 Non-volatile residue (mg/L) 40 max 4.3.7 Carbon dioxide (% by weight)(1)0.002 max 4.3.8 Other volatile carbonaceous material (2)(Total as UDMH, IPA the water is considered free of interfering substances if a 100 mL sample used to dissolve 0.1 g of s
20、ilver nitrate shows no turbidity after standing in the dark for 24 hours. The purified water as described in this paragraph shall be used throughout the procedure. b. Standard sodium chloride (NaCl) solution, 1 mL = 1.00 mg Cl-; weigh 1.648 g of dry NaCl into a 1 liter (L) volumetric flask. Dilute t
21、o the mark with purified water. Transfer the thoroughly mixed solution to a clean polyethylene bottle for storage. A 1000 mg/L (ppm) chloride standard may be commercially obtained; must be certified. c. 1N H2SO4; prepare by pouring 29 mL of ACS reagent grade concentrated H2SO4into 300 mL of purified
22、 water contained in a 1000 mL volumetric flask. Cool the solution to room temperature, dilute to the mark with the purified water, and mix thoroughly. Transfer the solution to a plastic bottle. d. 1N NaOH; prepare by dissolving 40 g of ACS reagent grade, low carbonate, NaOH in 300 mL of purified wat
23、er contained in a 1000 mL volumetric flask. Cool the solution to room temperature, dilute to the mark with the purified water, and mix thoroughly. Transfer the solution to a plastic bottle and protect from prolonged exposure to the atmosphere. e. Bromocresol green indicator; 1% aqueous solution. Use
24、 purified water. B.2.1.4.2 Equipment. a. Chloride electrode solid state Orion 9417BN, or equivalent. b. Reference electrode Orion 900200 Sure-Flow double junction with 1M potassium nitrate (KNO3) outer compartment filling solution, or equivalent. c. pH/millivolt meter, Orion 420A+ or equivalent. B.2
25、.2 Colorimetric method. B.2.2.1 Procedure. Add to the propellant residue container in one vessel from 4.3.7 five milliliters of ferric alum indicator and transfer to a 100 mL volumetric flask. Rinse the vessel with three 5 mL purified water aliquots and combine into the volumetric. Set samples aside
26、. Prepare a calibration blank and at a minimum two standards to bracket the expected chloride concentration in the samples in 100 mL volumetric flasks, and add 5 mL of ferric alum indicator. Add 2.5 mL of mercuric thiocyanate solution to each volumetric, samples and standards, and dilute to the mark
27、 with purified water. Mix the solutions thoroughly and allow to stand in darkness for 15 30 min. Analyze in a UV-Vis spectrophotometer at 460nm, at the wavelength recommended by the instrument manufacturer, or at that which provides the highest sensitivity using 5 cm cells. Use the blank to set the
28、instrument to zero absorbance and determine the absorbances of standards and samples. Prepare a calibration curve of absorbance versus concentration and determine the chloride concentration in the samples. The calibration correlation coefficient shall be 0.999. B.2.2.2 Calculation. Calculate the chl
29、oride content of the propellant using the formula in B.2.1.3. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87930B APPENDIX B 11 B.2.2.3 Reagents and equipment. The following shall apply as test conditions of B.2.2: B.2.2.3.1 Reagents. a. P
30、urified water of 18M-ohm or greater resistivity. b. Ferric alum indicator, Volhard (oxidation reduction indicator) Dissolve 10 g of ferric ammonium sulfate dodecahydrate (FeNH4(SO4)212H2O) ACS reagent grade in approximately 50 mL of purified water. Add 10 mL of ACS reagent grade nitric acid and dilu
31、te to 100 mL with purified water. (may be commercially obtained). c. Mercuric thiocyanate, 4.17 g/L in methanol for chloride determination (commercially available). d. Chloride standard, 1000 mg/L (may be commercially obtained; must be certified). B.2.2.3.2 Equipment. UV-Vis Spectrophotometer, doubl
32、e beam, equipped with 5 cm cells. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87930B APPENDIX C 12 ANILINE C.1 SCOPE C.1.1 Scope. This Appendix describes two methods for the determination of aniline content of the propellant. This Appendi
33、x is a mandatory part of the specification. The information contained herein is intended for compliance. C.2 METHODS C.2.1 Spectrophotometric method. C.2.1.1 Procedure. Pipet or syringe 0.25 mL (250 L) of propellant into a 25 mL volumetric flask containing approximately 15 mL of purified water, dilu
34、te to the mark with purified water, and mix the solution thoroughly. Fill two 1 cm pathlength silica spectrophotometer cells with purified water and place one in each position for sample and reference cells. Using the appropriate source and detector for the spectrophotometer set the recorder pen to
35、zero absorbance at 320 nm and scan the region between 320 and 240 nm. If the baseline is relatively flat then the cells and purified water can be considered free from interfering substances. Exchange the water in the sample cell with the previously prepared sample, using several rinses with sample s
36、olution, and rescan the 320 to 240 nm region, first ensuring that the recorder pen is set at zero absorbance at 320 nm. Draw a baseline under the aniline peak at 280 nm, measure, and record the net absorbance of the peak. Determine the aniline content of the sample by comparing the net absorbance ob
37、tained to a calibration curve of net absorbance versus percent aniline. C.2.1.2 Calibration. Pipet or syringe 0.025 mL (25 L) of ACS reagent grade aniline into a 100 mL volumetric flask containing 50 mL of purified water. Shake the mixture to dissolve the aniline and dilute the solution to the mark
38、with purified water. Mix the standard thoroughly. This standard is equivalent to 0.025%. Use this aniline standard to prepare a series of calibration standards by adding 2.0, 4.0, 6.0 and 8.0 mL to separate 25 mL volumetric flask, fill to the mark with purified water and mix thoroughly. The aniline
39、concentrations are equivalent to 0.2, 0.4, 0.6 and 0.8% respectively. Determine the net absorbance of standards versus purified water in the same manner as with the sample. Plot net absorbance versus percent aniline and draw a curve through the points. A check standard shall be prepared fresh daily
40、to check the calibration standards. If the check standard falls outside of 5% of the expected value, fresh calibration standards shall be prepared and the calibration check repeated until the required accuracy is demonstrated. C.2.1.3 Equipment. Spectrophotometer, double beam, ultra violet, narrow b
41、and width, recording, equipped with 1 cm silica cells. C.2.2 Gas chromatographic method capillary column. C.2.2.1 Procedure. Aniline concentration may also be determined using the OVCM GC method described in Appendix G of this specification. Provided by IHSNot for ResaleNo reproduction or networking
42、 permitted without license from IHS-,-,-MIL-PRF-87930B APPENDIX D 13 IRON D.1 SCOPE D.1.1 Scope. This Appendix describes three methods for the determination of iron content of the propellant. This Appendix is a mandatory part of the specification. The information contained herein is intended for com
43、pliance. D.2 METHODS D.2.1 Atomic absorption. D.2.1.1 Procedure. Rinse the propellant residue contained in one vessel from 4.3.7 as follows: Add 5 mL of 5N H2SO4to the vessel and place on a hotplate. Heat the mixture to near boiling, maneuver the beakers so the acid contacts the surface area of the
44、glass that the fuel mixture came in contact with and maintain at that temperature for three to five minutes. Allow the solution to cool and transfer to a 200 mL volumetric flask. Rinse the vessel at least three times with 5 mL aliquots of 0.1N H2SO4combining all of the rinses in the volumetric flask
45、. Dilute to the mark with purified water and mix thoroughly. Determine the absorbance of the sample at an iron wavelength closest to 2480 on a suitable atomic absorption spectrophotometer, after setting the instrument to zero absorbance, with 0.1N H2SO4. Compare the results to a calibration curve pr
46、epared from iron standards and record the iron concentration of the sample. D.2.1.2 Calibration. Prepare a 1000 ppm iron standard by dissolving 1.00 g of 99.99% purity iron wire or shot in 50 mL of 6N H2SO4. Use heat. Quantitatively transfer the resulting solution to a 1000 mL volumetric flask with
47、0.1N H2SO4and dilute to the mark with 0.1N H2SO4(a commercial 1000 ppm standard solution may be used; must be certified). Prepare a minimum of three calibration standards to bracket the expected iron concentration range of the samples by combining appropriate volumes of the stock solution in 200 mL
48、volumetric flasks with 0.1N H2SO4, and mix thoroughly. Prepare a mid-range check standard to verify the calibration. After setting the instrument to zero absorbance with 0.1N H2SO4, determine the absorbance of the calibration standards and check standard. Prepare a calibration curve of absorbance ve
49、rsus iron concentration. D.2.1.3 Calculation. Calculate the iron content of the propellant using the following formula:% =( )()()()(1 104)where: = The iron content of the sample solution, using the calibration curve. = Final dilution volume taken from NVR in mL. = Volume of hydrazine used in NVR analysis in
