Parametrical identification of destructive processes in avionic hydraulic drives.

• Autorzy: Ułanowicz L.

Warianty tytułu

PL

Parametryczna identyfikacja procesów destrukcyjnych lotniczych napędów hydraulicznych.

• Języki publikacji: EN

Abstrakty

EN

The paper contains identification of destructive processes that affect avionic hydraulic drive and its subassemblies and analyses impact of such processes onto values of defining parameters that characterize internal structure and performance of drives. Hydraulic precision pairs of hydraulic drives have been defined and described along with their operation conditions and mechanisms contributing to wear and tear of such pairs. A close look is taken to physical phenomena that underlie wear processes in hydraulic drives and lead to progessive destruction of hydraulic drives. Due consideration is paid to major effects that bring about to alteration of parameters that characterize structures and performance of hydraulic pumps, hydraulic tracking devices as well as distributing and control units. The performed analysis consisted in subdivision of the examined phenomenon (destruction of hydraulic drives) into elementary processes with no regard to mutual relationships among them. Such an approach has made it possible to find links between wearing processes (destruction) and deterioration of characterstic parameters that define structure and performance of drives. Finally, the conclusion was made that there exists correlation between wear of hydraulic precision pairs in hydraulic drives and deviation of their structural and performace parameters from their rated values.

PL

W artykule dokonano identyfikacji procesów destrukcji lotniczego napędu hydraulicznego i jego zespołów oraz wpływu tych procesów na wartość parametrów charakteryzujących jego strukturę i funkcjonowanie. Zdefiniowano i opisano hydrauliczne pary precyzyjne napędu hydraulicznego, warunki ich pracy oraz fizyczne mechanizmy ich zużywania. Naświetlono również fizyczne podstawy procesów zużywania elementów napędu hydraulicznego i omówiono przyczyny, które doprowadzają do destrukcji napędu. Omówiono także główne zjawiska powodujące zmianę wartości parametrów charakteryzujących strukturę i funkcjonowanie pomp hydraulicznych, hydraulicznych urządzeń śledzących, hydraulicznych zespołów rozdzielczo-regulacyjnych. Dokonana analiza polegała na podzieleniu badanego zjawiska (destrukcji napędu) na procesy elementarne bez uwzględnienia relacji między nimi. Umożliwia ona jednak stwierdzenie istnienia związku między procesami zużywania (destrukcji) a degradacją parametrów charakteryzujących strukturę i funkcjonowanie napędu hydraulicznego. Oceniono, że występuje korelacja między zużyciem hydraulicznych par precyzyjnych napędu hydraulicznego a odchyleniem od nominału parametrów charakteryzujących jego strukturę i funkcjonowanie.

Słowa kluczowe

EN

fluid power transmission; positiv-displacement hydraulic pump; delivery of a pump; volume efficiency of a pump; hydraulic motor; distribution valve; hydrostatic (forcing) pressure; pressure characteristic of hydraulic pump; hydraulic intesifier; volume flow rate; opinion of technical state; technical condition assessment; structural parameters

PL

napęd hydrostatyczny; wyporowa pompa hydrauliczna; wydajność pompy; sprawność objętościowa pompy; silnik hydrauliczny; zawór rozdzielczy; ciśnienie tłoczenia; charakterystyka ciśnieniowa pompy hydraulicznej; wzmacniacz hydrauliczny; natężenie przepływu; ocena stanu technicznego; parametr strukturalny

• Wydawca: Komitet Budowy Maszyn PAN
• Czasopismo: Zagadnienia Eksploatacji Maszyn
• Rocznik: 2007
• Tom: Vol. 42, nr 1
• Strony: 63--83
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Ułanowicz L.

• Instytut Techniczny Wojsk Lotniczych, ul. Księcia Bolesława 6, 01-494 Warszawa, tel. [phone],

Bibliografia

• [1] Ułanowicz L.: Outline for evaluation of the expected operability lifetime of hydraulic drives in use. Issues of Machinery Exploitation, Tome 2 (134) Vol. 38, 2003, pp. 77-93 (in Polish language).
• [2] Ułanowicz L.: Outline for probabilistic assessment of hydraulic drive durability. Issues of Machinery Exploitation, Tome 1 (137) Vol. 39, 2004, pp. 83-97 (in Polish language).
• [3] Ułanowicz L.: Identification of technical condition of the fluid power transmission on the basis of variation-related description of structural parameters. Issues of Machinery Exploitation, Tome 1 (145) Vol 41, 2006, pp. 61-87.
• [4] Ułanowicz L., Zboiński M.: Assessment of technical condition of avionic hydraulic systems during the process of operation thereof. Issues of Research and Exploitation of Avionic Technique, Vol. 5, The Air Force Institute of Technology (ITWL), Warsaw, 2004 (in Polish language).
• [5] Collective output: Analysis of opportunities to unify the resource of hydraulic systems in the Su-22 aircrafts. Internal development of The Air Force Institute of Technology (ITWL) (non-published), Warsaw, 1996 (in Polish language).
• [6] Fitch E.: An Encyclopedia of Fluid Contamination Control for Hydraulic Systems. Hemisphere. Washington 1979.
• [7] Ułanowicz L.: Examination of reasons for failures of avionic hydraulic pumps NP-52M-2 during operation thereof. Internal development of The Air Force Institute of Technology (ITWL) (non-published), Warsaw, 1991 (in Polish language).
• [8] Kolasa B., Ułanowicz L.: Examination of reasons for chipping of hydraulic pumps from the An-26 aircrafts. Internal development of The Air Force Institute of Technology (ITWL) (non-published), Warsaw, 1995 (in Polish language).
• [9] Ułanowicz L., Waręcki T.: Examination of components included into hydraulic on-board system of Su-22 aircrafts in relation to spontaneous movement of the control stick. Internal development of The Air Force Institute of Technology (ITWL) (non-published), Warsaw, 1987 (in Polish language).
• [10] Ułanowicz L., Zboiński M.: Examination of faults in steering systems of aircrafts, 3rd conference: Methods and techniques for inspection of aircrafts in flight, Mrągowo, 1998 (in Polish language).
• [11] Ułanowicz L., Waręcki T.: Examination of technical condition of the NP-34M-IT hydraulic pumps, Internal development of The Air Force Institute of Technology (ITWL) (non-published), Warsaw, 1991 (in Polish language).
• [12] Ułanowicz L.: Test for durability and reliability of the BU-210 and BU-51MS hydraulic amplifiers. Internal development of The Air Force Institute of Technology (ITWL) (non-published), Warsaw, 1991 (in Polish language).
• [13] Collective output: Long-term tests of the BU-210 and BU-51MS hydraulic amplifiers. Internal development of The Air Force Institute of Technology (1TWI.) (non-published), Warsaw, 1984 (in Polish language).
• [14] Kolasa B., Ułanowicz L.: Report file on the research work: Investigation and evaluation of technical condition of both the first and the second hydraulic systems along with on-board hydraulic pumps NP-34M-IT for the first and the second hydraulic systems of the Su-22 aircraft (54K and 52UM3K) with the aim to increase the hour-scheduled and year-scheduled MTBR resource. Aircraft numbers: 29307, 28919, 27820, 37307, 24605. Internal development of Air Force Institute of Technology, Warsaw, 2002 (in Polish language).
• [15] Kolasa B., Ułanowicz L.: Report file on the research work: Investigation and evaluation of technical condition of hydraulic systems and the NP-34M-IT on-board hydraulic pumps in the both hydraulic systems of the MiG-21bis aircraft with the aim to increase their MTBR resource. Aircraft numbers: 8705, 8859, 8971, 8801, 8888. Internal development of Air Force Institute of Technology, Warszawa 2002 (in Polish language).
• [16] Kolasa B„ Ułanowicz L.: Report file on the research work: „Investigation and evaluation of technical condition of hydraulic systems and the NP-34M-IT on-board hydraulic pumps in the both hydraulic systems of the MiG-21UM aircraft with the aim to increase their MTBR resource. Aircraft numbers: 9231, 9323, 9351, 9292, 9308". Internal development of Air Force Institute of Technology, Warsaw, 2001 (in Polish language).
• [17] Kolasa B., Ułanowicz L.: Investigation of the hydraulic oil Orlen Oil H-515-Pl with the aim to use the same in hydraulic systems of combat aircrafts. Ground-based investigations. Laboratory tests, Internal development of Air Force Institute of Technology, Warsaw, 2002 (in Polish language).