1、 MIL-PRF-27404D 20 April 2012 SUPERSEDING MIL-PRF-27404C 1 October 1997 PERFORMANCE SPECIFICATION PROPELLANT, MONOMETHYLHYDRAZINE AMSC N/A FSC 9135 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. METRIC Comments, suggestions, or questions on this document should be
2、addressed to AFPA/PTPT, 2430 C Street, Bldg 70, Area B, Wright-Patterson AFB OH 45433-7632 or e-mailed to AFPET.AFTTwpafb.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:/assist.daps.dla.mil. Prov
3、ided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27404D 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 monomethylhydrazine (
4、N2H3CH3) propellant. 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 specification or recommended for additional information or as examples. While
5、 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 are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and
6、 handbooks. The following specifications 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 contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-27401 Propellant Pressurizing Agent, Nitrogen
7、MIL-PRF-27407 Propellant Pressurizing Agent, Helium (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Bldg 4D, Philadelphia PA 19111-5094.) 2.3 Non-government publications. The following doc
8、uments 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 contract. ASTM International ASTM D2276 Standard Test Method for Particulate Contaminant in Aviation Fuel by Line Sampling (DoD Adopted
9、) ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications (DoD Adopted) (Copies of these documents are available online at http:/www.astm.org or ASTM International, 100 Barr Harbor Drive, West Conshohocken PA 19428-2959). Provided by IHSNot f
10、or ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27404D 3 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 she
11、ets), the text of this document takes 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 shall conform to
12、 those listed in Table I when tested in accordance with 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
13、 “to the nearest unit” in the last 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
14、 least 10 micrometer (m) nominal and 40 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 a clear and colorless homogeneous liquid when examined visually by transmitted light (a trace yell
15、ow/straw to green discoloration is allowed when compared to a sample bottle containing purified water). TABLE I. Chemical and physical properties. Properties Limits Test Paragraph Monomethylhydrazine (% by wt) 98.3 4.3.2 Water (% by wt) 1.5 max 4.3.2 Non-volatile residue (mg/L) 10 max 4.3.3 Particul
16、ate (mg/L) 10 max 4.3.4 4. VERIFICATION 4.1 Classification of inspections. The inspections shall be classified as quality conformance inspections. 4.2 Quality conformance inspection. Unless otherwise specified (6.2), each filled shipping container shall be considered a lot and shall be sampled. Each
17、 sample shall be subjected to the visual examination described in 4.3.1 for conformance to 3.4 and to the tests specified in Table I. 4.2.1 Sample. A sample consists of not less than 600 milliliters (mL) of propellant. Unless otherwise specified, quality conformance tests shall be made on the sample
18、 of propellant taken directly from the shipping container. When required, the sample shall be forwarded to a laboratory designated by the procuring activity for subjection to the quality conformance tests specified herein. The bottle intended for sampling shall be specially cleaned and handled accor
19、ding to the procedure described in ASTM D2276 Section 10 with the exception listed 4.3.4d. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27404D 4 4.2.2 Rejection. When any sample of the propellant tested in accordance with 4.3 fails to conf
20、orm to the requirements specified herein, the entire lot represented by the sample shall be rejected. 4.3 Test methods. 4.3.1 Examination of product. The propellant shall be visually examined while performing test specified in 4.3.4 to determine compliance with the requirement as specified herein. E
21、xamination to ensure that the material conforms to 3.4 shall be conducted after the sample has been transferred to the 500 mL graduated cylinder. 4.3.2 Monomethylhydrazine (MMH) assay and water. The propellant and water content of the sample shall be determined by one of the Gas Chromatographic (GC)
22、 methods described in Appendix A. In case of a dispute, the packed column method (A.2.1) shall be the referee. 4.3.3 Non-volatile residue (NVR). The NVR of the propellant shall be determined in duplicate by either of the methods described in Appendix B. In case of a dispute, the dropwise method (B.2
23、.1) shall be the referee. 4.3.4 Particulate. The propellant sample shall be tested gravimetrically for contamination in accordance with ASTM D2276, with the following exceptions: a. Mix the sample thoroughly by shaking the sample container. Immediately pour 500 mL of the sample into a clean 500 mL g
24、raduated cylinder. Use this 500 mL of propellant for the particulate analysis. b. Use a Mitex disc polytetrafluoroethylene (PTFE) hydrophobic, 10 m, 0.47 millimeters (mm), white filter or equivalent instead of that specified in ASTM D2276. c. Set the oven temperature to 70C (158F). d. Filtered Ameri
25、can Chemical Society (ACS) grade isopropyl alcohol shall be used for rinsing the sample bottle and filter holder instead of petroleum ether specified in ASTM D2276. 5. PACKAGING 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.
26、2). When actual packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activities within
27、the Military Service or Defense Agency, or within the Military Services System Commands. Packaging data retrieval is available from the managing Military Departments or Defense Agencys automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. 6. NOTES (This sec
28、tion contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended use. The propellant described by this specification is intended for use as a fuel in rocket engines. Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
29、nse from IHS-,-,-MIL-PRF-27404D 5 6.2 Acquisition requirements. Acquisition documents must specify the following: a. Title, number, and date of the specification. b. Method of shipment, type and capacity of containers. c. Quantity by weight. d. When a different sampling plan is required (4.2). e. Pa
30、ckaging requirements (5.1). 6.3 Subject term (key word) listing. Fuel Rocket engine 6.4 Material Safety Data Sheets. Contracting officers will identify those activities that require copies of completed Material Safety Data Sheets (MSDS) prepared in accordance with FED-STD-313. The pertinent Governme
31、nt mailing addresses for submission of data are listed in FED-STD-313. 6.5 Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Provided by IHSNot for ResaleNo reproduction or networking
32、 permitted without license from IHS-,-,-MIL-PRF-27404D APPENDIX A 6 MONOMETHYLHYDRAZINE ASSAY AND WATER A.1 SCOPE A.1.1 Scope. This Appendix describes two Gas Chromatographic methods for the determination of propellant and water content in the sample. This Appendix is a mandatory part of the specifi
33、cation. The information contained herein is intended for compliance. A.2 METHODS A.2.1 Gas chromatographic method packed column. A.2.1.1 Assay column preparation. Cap one end of a 1/8 inch (in) outer diameter (OD) by 6 foot (ft) nickel tube and fill the tube with the Tenax-TA 60/80 mesh column packi
34、ng by pouring through a small funnel attached to the other end. Tap or mechanically vibrate the tube to ensure uniform packing. When the tube is filled, plug both ends with a small wad of glass wool, bend the column to the configuration required by the column oven, and connect the column to the inle
35、t fitting in the oven. Condition the column with helium carrier gas flowing and the oven set at 200C for one hour. After conditioning the column, connect the other end to the detector and set the carrier gas flow to approximately 25 milliliters per minute (mL/min), and the column oven to 100C. The i
36、nlet and detector temperatures, if separately heated, shall be set to 150C and 210C, respectively. The detector current should be set to a nominal sensitivity value recommended for helium by the instrument manufacturer. A.2.1.2 Procedure. Equilibrate the column with propellant by injection of three
37、or more 1 microliter (L) samples into the inlet. If more than 30 minutes elapse between analyses, a single 1 L injection of propellant should re-equilibrate the column. Inject 1 L of propellant for analysis and record the areas of all peaks in the chromatogram using the following time/temperature pr
38、ogram: Helium carrier gas flow 45 mL/min Initial temperature 100 C Initial time 2 min Rate 20 C/min Final temperature 200 C Final time 3 min Each analysis should require less than 15 minutes for elution of all components. Hydrazine elutes at the leading edge of the MMH peak. If observed, traces of h
39、ydrazine shall be included in the reporting of MMH. The elution order of possible sample components is as follows: Air ammonia methylamine unsymmetrical dimethylhydrazine (UDMH) MMH water hydrazine aniline Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
40、,-,-MIL-PRF-27404D APPENDIX A 8 TABLE A-1. GC Recommended parameters PARAMETER CONDITION Carrier Gas He Carrier Flow 10 mL/min Sample Volume. 1 L (10:1 split) Inlet Temp. 150 C TCD Detector Temp. 200 C Carrier + Aux. Flow 25 mL/min Carrier + Aux. + Ref. Flow 65 mL/min Total (Splitter Bypass) Flow 90
41、 mL/min Purge On Oven Max 200 C Equilibration Time 2.00 min Initial Temp.(T0) 60 C Initial Time (t0) 3.00 min Rate (1) 10 C/min Final Temp. (Tf1) 100 C Final Time (tf1) 0.00 min Rate (2) 20 C/min Final Temp. (Tf2) 185 C Final Time (tf2) 3.75 min Allow the instrument to stabilize, condition the colum
42、n and perform check runs by processing three consecutive injections of 1 - 2 L of sample. The checks must meet the quality control criteria in A.2.2.2. A.2.2.2 Quality control. The following performance criteria must be met for fuel purity analysis, GC replicate analyses (3 consecutive) RSDa 10 % a.
43、 RSD = Standard Deviation * 100% / Mean A.2.2.3 Equipment. (1) Gas chromatograph equipped with a thermal conductivity detector (TCD) and a split/splitless injector. (2) Agilent ChemStation or equivalent. (3) A 30 m x 0.53 mm x 1 m Stabilwax DB capillary column. (4) Glass wool packed split linerProvi
44、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27404D APPENDIX B 9 NON-VOLATILE RESIDUE (NVR) B.1 SCOPE B.1.1 Scope. This Appendix describes two methods for the determination of non-volatile residue of the propellant. This Appendix is a mandatory
45、 part of the specification. The information contained herein is intended for compliance. B.2 METHODS B.2.1 Dropwise method. B.2.1.1 Procedure. Clean the unassembled apparatus with detergent and rinse thoroughly with purified water. Dry the parts in an oven at 110C. Assemble the apparatus as shown in
46、 Figure B-1. Fill the water bath with purified water and turn on the heater. Adjust the water level of the bath to approximately one-half inch below the lowest fitting and mark this level on the bath. When the bath temperature reaches boiling, adjust the nitrogen purge to approximately 2 liters per
47、minute (L/min) and turn on the aspirator. With the sample delivery valve closed, the pressure in the apparatus should be below 30 mmHg. Open the sample delivery valve slowly to adjust the apparatus pressure to approximately 60 mmHg. Allow the apparatus to purge for approximately five minutes to remo
48、ve traces of water. Remove the water bath and dry the outside of the residue vessel with a clean lintless tissue. Disconnect the aspirator from the apparatus and remove the residue vessel using a tissue to hold the vessel. Wipe the outside of the vessel and place it near the analytical balance. Afte
49、r at least twenty minutes, accurately weigh the residue vessel until the weight remains constant to 0.1 mg. Record the weight. Reassemble the apparatus and close the sample delivery valve. Replace the water bath, adjust the water level to the mark, and heat the water to boiling. Transfer 100 mL of pro
