Acoustic characteristics of an easy propeller airplane with internal combustion engines
Aviation technics and technology
Аuthors
1*, 2**1. Central Aerohydrodynamic Institute named after N.E. Zhukovsky (TsAGI), 1, Zhukovsky str., Zhukovsky, Moscow Region, 140180, Russia
2. IRKUT Corporation Regional Aircraft, 26, Leninskaya Sloboda str., Moscow, 115280, Russia
*e-mail: samohin_vf@mail.ru
**e-mail: moshkov89@bk.ru, p_moshkov@ssj.irkut.com
Abstract
In article the noise problem on the district of easy propeller planes (EPP) is considered, the short review of gears of generation of noise by the propeller and an internal combustion engine and existing analytical models of noise of the air propeller is given. The main results of a pilot study of acoustic characteristics of the easy propeller plane of the Yak-18T type in static conditions are presented. Existential, spectral and power characteristics of acoustic radiation of the EPP power plant are provided. The new gear of generation is revealed by the subsonic air propeller of acoustic radiation of pulse type. It is established that the acoustic capacity of the EPP power plant is defined by capacity of total acoustic radiation of the air propeller and the engine. The acoustic efficiency of the EPP power plant of the Yak-18T type in stationary conditions makes ≈ 0,15 %.Keywords:
noise of the air propeller; noise of internal combustion engines; noise of easy propeller planes.Download