Accession Number : AD0830862


Title :   PROJECT SEE-THRU FLAME INTERFERENCE MEASUREMENTS, TITAN IIIC LAUNCH TEST 8275/2250


Descriptive Note : Final rept.


Corporate Author : PAN AMERICAN WORLD AIRWAYS INC PATRICK AFB FL AEROSPACE SERVICES DIV


Personal Author(s) : Poehler, Horst A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/830862.pdf


Report Date : Mar 1968


Pagination or Media Count : 94


Abstract : A final report of flame attenuation, as well as flame noise measurements made at AFETR on Titan IIIC, Test 8275/2250, April 28, 1967 is presented. Measurements were made at X-band(9100 MHz), C-band(5000MHz), S- band(2222 MHz), and P-band(220-250 MHz), frequencies at sites especially set up to yield a range of aspect angles, particularly at the low aspect angles of interest to AFWTR flights. Amplitude flame-noise measurements are reported for the first time for the Titan IIIC zero-stage. Power spectral density and probability distribution characteristics are presented. Also contained in this report are results of alkali-metal impurity measurements on the zero-stage, on the separation-rocket and the stage-I propellants; data on the effect of the exhaust flame on pulse transmission; and a plasma model of the zero-stage rocket exhaust from which predictions of rocket exhaust attenuation as a function of aspect angle and frequency can be made.


Descriptors :   *RADIO SIGNALS , *SOLID PROPELLANT ROCKET ENGINES , *BLACKOUT(PROPAGATION) , *EXHAUST FLAMES , PLASMAS(PHYSICS) , PROBABILITY , SODIUM , POWER SPECTRA , POTASSIUM , ELECTROMAGNETIC PULSES , S BAND , P BAND , TELEMETER SYSTEMS , C BAND , LAUNCH VEHICLES , X BAND , RADIOFREQUENCY INTERFERENCE , IONIZATION , GUIDED MISSILE RANGES , RADAR SIGNALS


Subject Categories : Active & Passive Radar Detection & Equipment
      Electromagnetic Pulses
      Combustion and Ignition
      Radio Communications


Distribution Statement : APPROVED FOR PUBLIC RELEASE