ASTM E637 is a standard test method used to calculate stagnation enthalpy in aerodynamic simulation devices (such as plasma arc jets). It combines heat transfer theory with experimental measurements of stagnation-point heat transfer and stagnation pressure to provide consistent data for thermal protection and ablation computations. This test method calculates the stagnation enthalpy from experimental observations of stagnation-point heat transfer and stagnation pressure using heat transfer theory. The values expressed in SI units should be considered the standard.
ASTM E637 Calculation of Stagnation Enthalpy from Heat Transfer Theory and Experimental Measurements of Stagnation-Point Heat Transfer and Pressure
What is ASTM E637?
What is the Scope of ASTM E637?
ASTM E637 provides a standard method for computing an aerodynamic simulation device’s stagnation enthalpy using heat transfer theory and measured stagnation-point heat transfer and pressure. For ablation calculations, the stagnation enthalpy acquired using this test method provides a consistent set of data, including heat transfer and stagnation pressure.
ASTM E637 Testing Procedure
The equation calculates the stagnation enthalpy with the required constants for the Mach number, shape factor, and test gas.
ASTM E637 Analysis Results and Interpretation
q √ R/Pt2 = Ki (He – Hw)
Where q is stagnation-point heat transfer rate, W/m2 (or Btu/ft2·s), Pt2 is model stagnation pressure, Pa (or atm.), R is hemispherical nose radius, m (or ft.), He is stagnation enthalpy, J/kg (or Btu/lb.)
FAQ
Where can I get the astm e637 tested?
You can share your astm e637 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm e637 test to various testing techniques.
How much do I need to pay for the astm e637 test?
Please contact us for a detailed quote for your astm e637 testing needs. Cost incurred to carry out different astm e637 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
How many samples are required for astm e637?
The required number of samples or specimens should comply with the procedure given in the astm e637 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
How much discount can I get on the astm e637 test?
MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.
How many days will it take to complete the astm e637 test?
The turnaround time for astm e637 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
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