A radar method of calibrating airspeed installations on airplanes in maneuvers at high altitudes and at transonic and supersonic speeds Page: 3 of 7
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A RADAR METHOD OF CALIBR EATING AIRSPEED INSTALLATIONS ON AIRPLANES IN MANEUVERS
FIG rC.aE 1.-Refraction of light in earth's atmosphere. See appendix for derivation of amount
_ _...K. _-
4 1 16
Slant range, r, ft
FIcUR 2.-Error in altitude due to refraction of light.
2 00 160
4 8 /2 16
Slaont rane, r, ft
FIGUEs 3.-Error in altitude due to curvature of the earth.
A I (rcos g)
Elevafion angle, deg
FLGOURE 4.-Error in altitude due to error i slant range, Ar ==L4 feet, and to error in elevation
angle, AO='0.2 mril
L _-- J*
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Zalovcik, John A. A radar method of calibrating airspeed installations on airplanes in maneuvers at high altitudes and at transonic and supersonic speeds, report, August 31, 1949; (digital.library.unt.edu/ark:/67531/metadc60324/m1/3/: accessed May 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.