{
  "source": {
    "title": "Experimental investigation of a Mach 6 fixed-geometry inlet featuring a swept external-internal compression flow field",
    "author": "M. G. Torrence",
    "report": "NASA-TN-D-7998 (1975)",
    "record": "https://ntrs.nasa.gov/citations/19750024978",
    "pdf": "https://ntrs.nasa.gov/api/citations/19750024978/downloads/19750024978.pdf",
    "sensitivity_discussion": "Printed p. 12 (PDF p. 13); Figure 12(a,b), printed pp. 55-56 (PDF pp. 56-57); Figure 12(c), printed p. 57 (PDF p. 58)",
    "sha256": "8C37ACC003C561749D6E1EC3EB0D559041DC4A562BE2EB7DAC519409D13FD7D0"
  },
  "reported_result": {
    "overall_arithmetic_area_average_total_pressure_recovery": 0.78,
    "corresponding_adiabatic_kinetic_energy_efficiency": 0.99,
    "definition_note": "The report calculates the kinetic-energy efficiency from the recovery and free-stream Mach number. These are different metrics, and neither represents electrical output."
  },
  "data_reduction_sensitivity": {
    "limiting_total_pressure_recovery_values_tested": [0.91, 0.81, 0.71],
    "mass_weighted_recovery_reported_variation_percent": 19,
    "corresponding_adiabatic_kinetic_energy_efficiency_variation_percent_less_than": 1,
    "interpretation": "The report describes sensitivity to the limiting-recovery correction applied while reducing pressure-survey data. This is not a statistical confidence interval or uncertainty on the reported 0.78 mean. It states 91% was considered the most realistic limit.",
    "source_text_locator": "Printed p. 12 (PDF p. 13)",
    "mass_weighted_recovery_exact_values_by_limit_digitized": false
  },
  "measurement_and_uncertainty_boundary": {
    "measurements": [
      "Pitot and static pressure surveys in the inlet throat",
      "Wall static pressure",
      "Surface temperatures"
    ],
    "static_pressure_probe_warning": "The report says measured static-pressure profiles were generally low, with possible errors as large as 50% at some locations. This is not reported as a confidence interval on the overall recovery result.",
    "electrical_output_measured": false,
    "wall_heat_flux_measured": false,
    "whole_engine_or_vehicle_result": false
  },
  "reproduction": "No new values have been digitized in this summary. Use the linked primary report for the source figures and discussion. The existing Figure 12(c) redraw remains a separate approximate visual digitization of the arithmetic area-average curve."
}