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2 2011

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Numeryczne modelowanie rozpływu spalin w strumieniu zawirnikowym podczas zawisu śmigłowca

Fijałkowski S., Kania M.

Prace Instytutu Lotnictwa

2011

Nr 12 (221)

71-88

W artykule przedstawiono model numeryczny i wyniki symulacji rozpływu spalin odpływających z silników napedowych w manewrze zawisu śmigłowca, z różnymi prędkościami wiatru bocznego. Symulację przeprowadzono z wykorzystaniem modelu numerycznego i oprogramowania ANSYS FLUENT. Obliczenia symulacyjne przeprowadzono na przykładzie zawisu śmigłowca PZL W3A Sokół.

The paper presents the 3D model and simulation for exhaust gases expansion in vertical helicopter flight with different side wind speeds. The ANSYS FLUENT and CFD software were used to develop the model and simulations. The simulation were done for the PZL W-3A "Sokół" in vertical flight.

Flight tests of upgraded helicopters

Nowakowski M.

Journal of KONES

2011

Vol. 18, No. 4

317-324

In-flight tests and measurements are usually performed for newly built or modernised aircraft utilised by the Polish Armed Forces. In the course of the in-flight tests the airborne equipment is investigated also. The main goal of the performed tests is to verify the tactical performance and to identify the technical parameters of the investigated aircraft or equipment. New aeronautical designs are subjected to flight test prior to being introduced into production and service. It is why ITWL was involved in both functional tests of equipment /systems installed on-board of helicopters as well as tests intended to determine flying qualities and performance thereof. Numerous test flights have been carried out in conformance to the newly developed methodology that takes account of the Joint Airworthiness Requirements - JAR 29 - Large Rotorcraft. Helicopter flight data and control parameters have been recorded in the course of experimental test flights by means of the measuring and recording equipment. The post-flight analyses of the recorded data made it possible to assess longitudinal static stability and directional stability, manoeuvrability and agility as well as performances of the upgraded helicopter Mi-17-IV.