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2016, vol. 44, br. 1, str. 1-9
Upravljanje zaustavnim pritiskom u supersoničnim aerotunelima zasnovano na modelu
aVojnotehnički institut - VTI, Beograd
bUniverzitet u Beogradu, Mašinski fakultet
cTehnikum Taurunum - College of Applied Engineering Studies, Belgrade

e-adresabiljana.ilic@icloud.com
Ključne reči: supersonic flow; mathematical model; blowdown wind tunnel; stagnation pressure; lumped parameter model; finite difference method; feedforward control
Sažetak
Upravljanje parametrima strujanja u aerotunelima je oblast intenzivnog istraživanja poslednjih godina, sa ciljem poboljšanja kvaliteta i efikasnosti rada aerotunelskih instalacija. Ovaj rad predstavlja pokušaj da se doprinese boljem razumevanju upravljanja zaustavnim pritiskom u supersoničnim instalacijama prekidnog dejstva. Razmotrena je strategija upravljanja zaustavnim pritiskom u aerotunelu T-38 Vojnotehničkog instituta u Beogradu. Poboljšani matematički model supersoničnih aerotunelskih instalacija je predložen i primenjen na aerotunel T-38. Tačnost sa kojom matematički model predviđa odziv instalacije u uslovima supersoničnog strujanja demonstrirana je poređenjem podataka iz simulacija i eksperimenata. Matematički model je upotrebljen za uvođenje izmenjenog algoritma upravljanja u polazni upravljački sistem aerotunela T-38. Aerotunelski eksperimenti su potvrdili predviđanja modela u pogledu smanjenja vremena uspostavljanja strujanja i povećanja raspoloživog vremena za merenje, čime je postignuto značajno poboljšanje efikasnosti rada aerotunela.
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