The development of TURBISTAN is a joint international effort to derive a loading standard representative for fighter aircraft engine disc usage. A representative loading standard offers considerable potential advantages over the present zero-max type of loading used for disc material evaluation. This is because the standard incorporates the effects of subcycles, their number, magnitude and sequence, which are known to seriously affect disc life and for which current life prediction techniques only partly account. Therefore usage of the standard in fatigue tests provides an improved evaluation of material properties, structural details, fabrication techniques, surface quality and life prediction. The present paper describes the comilation of operational flight data, their analysis and the generation of a preliminary TURBISTAN sequence for 'cold' compressor discs. The sequence contains about 8000 cycles which represent 100 flights. In addition the paper describes the background and philosophy of a material testing programme meant to assess the effectiveness of the standard and to explore the validity of the assumptions made in its derivation.
Turbistan, a standard load sequence for aircraft engine discs
Turbistan, eine Standard-Lastsequenz fuer Flugzeugturbinenscheiben
1985
11 Seiten, 7 Bilder, 3 Tabellen, 7 Quellen
Aufsatz (Konferenz)
Englisch
BETRIEBSBEANSPRUCHUNG , ZUVERLAESSIGKEITSVORAUSSAGE , FLUGTURBINE , MILITAERFLUGZEUG , OBERFLAECHENEIGENSCHAFT , BETRIEBSFESTIGKEIT , LASTSPIEL , MASCHINENTEIL , MATERIALPRUEFUNG , MATERIALERMUEDUNG , STRUKTUR (WERKSTOFF) , SCHADENSFORSCHUNG , BETRIEBSZUSTAND , STOFFEIGENSCHAFT , LEBENSDAUER , PRUEFUNG