Usklađivanje radne točke turbine i kompresora mlaznog motora

undergraduate thesis

• Title (english): Turbine-compressor matching in a jet engine
• Author: Patrik Vlašić
• Mentor: Tessa Uroić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2025-02-20, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Aviation, Rocket and Space Technology

Abstract

Kod mlaznih motora potrebno je uzeti u obzir parametre motora tijekom nenominalnih uvjeta
rada. Mlazni motor će biti u nenominalnim uvjetima rada u svim slučajevima osim pri
ravnotežnom horizontalnom letu, tzv. krstarenju. U nominalnim radnim uvjetima rad pojedinih
komponenata motora je optimalan, odnosno komponente su proračunate za nominalne radne
uvjete, a u nenominalnim uvjetima ključno je uskladiti radne točke kompresora i turbine kako
bi se osigurala jednolika brzina vrtnje vratila te kako bi se zadovoljili zakoni očuvanja mase i
energije. U radu su stoga obrađeni nenominalni uvjeti rada mlaznog motora s naglaskom na
usklađivanje rada kompresora i turbine. Prikazane su teorijske pretpostavke mape rada
kompresora, analitički proračun mape kompresora, nestabilne pojave kod rada kompresora te
proračun usklađivanja radne točke turbine i kompresora za izvedbu mlaznog motora s jednim
vratilom.

Abstract (english)

When analyzing jet engines, it is essential to consider engine parameters during off-design
operating conditions. A jet engine operates under off-design conditions in all cases except
during steady-level flight, known as cruising. In nominal operating conditions, the performance
of individual engine components is optimal, as they are designed for these conditions. However,
under off-design conditions, it is crucial to match the operating points of the compressor and
turbine to ensure a uniform shaft rotational speed while satisfying the principles of mass and
energy conservation.
This study focuses on off-design operation of a jet engine, with an emphasis on matching the
performance of the compressor and turbine. It presents theoretical assumptions regarding
compressor maps, an analytical calculation of the compressor map, unstable phenomena during
compressor operation, matching the operating point of the turbine and compressor for a singleshaft jet engine configuration.

• Keywords: mlazni motor; nominalni uvjeti; nenominalni uvjeti; mapa rada kompresora
• Keywords (english): jet engine; off-design conditions; on-design conditions; compressor map
• Language: croatian
• URN:NBN: urn:nbn:hr:235:359446
• Study programme: Title: Aeronautical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka zrakoplovnog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka zrakoplovnog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-02-20 16:30:26