Requirements for the Acoustic Efficiency of the Collective Protection Equipment against the Aviation Noise


Experimental samples of the collective protection means against the aviation noise were studied. Objectives of the work: to determine the features of the aviation noise, to form the tactical and technical requirements for the acoustic efficiency of the collective protection means against noise for the state aviation, to provide for the assessment of the results of their full-scale tests. The results of studies of the acoustic situation at the workplaces of aviation specialists of the state aviation, who are directly involved in ensuring flights at the airfield and maintenance of the aviation equipment, are summarized. Main sources of noise are the aircraft power plants, and auxiliary technical equipment.
Tactical and technical requirements for the sound insulation are substantiated for achieving optimal acoustic efficiency of the collective protection means against the aviation noise. The requirements are formulated: for life support systems, for safety and microclimate, for ergonomics, technical aesthetics, etc. Tests of single-module and two-module experimental samples of the collective protection means were conducted. Acoustic measurements in a single-module sample were carried out in the flight conditions. Two-module sample was examined at the aircraft testing site after repair and maintenance work in the power plant.
It is concluded that both samples have sufficient sound insulation to ensure the protection of engineering personnel from the uncompensated effect of the aviation noise. The sound insulation coefficient in the low frequency region is 14–17 dB, medium — 21–26 dB, high — 35–50 dB, sound insulation in terms of sound level is 30 dB.  Presented samples are capable to ensure protection of the aviation specialists from the adverse effects of noise and meet the requirements for maintaining working capacity and reducing the risk of disease.

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DOI: 10.24000/0409-2961-2022-2-43-49
Year: 2022
Issue num: February
Keywords : requirements aviation noise means of collective protective equipment specialists of the engineering and aviation service sound insulation acoustic efficiency
  • Dragan S.P.
    Dragan S.P.
    Dr. Sci. (Eng.), Laboratory Head, State Research Center — Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, Moscow, Russia
  • SoldatovS.K.
    Dr. Sci. (Med.), Prof., Prof.-Consultant State Research Center — Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, Moscow, Russia
  • Zinkin V.N.
    Zinkin V.N.
    Dr. Sci. (Med.), Prof., Senior Research Assistant, Central Research Institute of the Air Force of the Ministry of Defense of the Russian Federation, Shchelkovo, Russia
  • Sheshegov P.M.
    Sheshegov P.M.
    Dr. Sci. (Med.), Senior Research Assistant Central research Institute of the air force of the Ministry of defense of the Russian Federation, Shchelkovo, Russia