MIL-DTL-87173 Propellant, Priming Fluid, Alcm Engine, Grade Pf-1This specification covers one grade of high-density hydrocarbon fuel. This specification was thoroughly reviewed as a part of acquisition reform. While most of the requirements were converted to performance terms, due to the military-unique nature of the product \(see 6.1\) and the need for compatibility with deployed systems it was determined that not all requirements could be converted. The issuance of this specification as "detail" is not intended to constrain technology advances in future systems.

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MIL-DTL-87173B(USAF)

APPENDIX C

C.7 CALCULATIONS

C.7.1 For each PF-1 acceptance sample, calculate the weight percent of JP-10 and MCH as follows:

AJP-10

X 100

%JP-10 = A

+ AMCH + A

JP-10

Impurities

AMCH

X 100

%MCH = A

JP-10 + AMCH + A

Impurities

In the above equation, all hydrocarbons other than those contained in the JP-10 and MCH subgroup are

considered impurities. A response factor of 1.000 is used for the impurities.

C.8 PRECISION

C.8.1 Precision. Detailed precision studies have not been performed for this method. However, limited

results indicate the method is capable of the following precision.

C.8.2 Repeatability. Replicate analyses, performed under identical conditions in the same laboratory,

should yield results that do not vary more than one percent (absolute) from the mean value for each

component.

C.8.3 Reproducibility. When the same sample is analyzed in different laboratories according to this

method, the results for any component should not differ by more than 1.5 percent (absolute).

C.8.4 Accuracy. Back-analysis of a calibration standard should give results that agree with the known

values to within 0.5 percent (absolute).