Utjecaj zaleđivanja na performanse i ravnotežni let zrakoplova

undergraduate thesis

• Title (english): Icing effects on aircraft performance and trim
• Author: Sara Kramarić
• Mentor: Milan Vrdoljak (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2020-09-23, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Aviation, Rocket and Space Technology

Abstract

Ovaj rad se zasniva na razmatranju zrakoplova DHC-6 Twin Otter serije 300. Pojavom leda na konstrukciji zrakoplova dolazi do značajne promjene aerodinamičkih koeficijenata, kao i do promjene ovisnosti koeficijenta uzgona i momenta propinjanja o napadnom kutu. Iz toga se razloga u ovome radu promatra i analizira utjecaj zaleđivanja na performanse i ravnotežni let zrakoplova. Također se proračunavaju i ovojnica promatranog zrakoplova, dolet i maksimalno trajanje leta. Podatci koji su bili potrebni za provedbu ovog rada prikupljeni su iz analize NASA-inog istraživačkog centra koji je promatrao let gore spomenutog zrakoplova u različitim uvjetima. Područje analize obuhvaćaju četiri različita slučaja: čistu konfiguraciju, pojavu leda na repu, na krilima te potpuno zalađenu konfiguraciju. Na kraju ovog radu napravljena je i usporedba odabranih performansi za različite mase, visine i slučaj zaleđivanja.

Abstract (english)

This paper is based on the analysis of the DHC-6 Twin Otter Series 300 aircraft. Ice
accreation on aircraft construction causes a significant change in the aerodynamic coefficient,
as well as a change in the correlation of coefficient of lift and pitching momet with the angle
of attack. Therefore, the icing effect on aircraft performance and trim is observed and
analysed in the papre. Moreover, the envelope of the observed aircraft, range and endurance
are also calculated. Data required for the paper was gathered from the analysis of NASA's
research centre which observed the flight of the aircraft mentioned above. Areas of the
analysis include four different cases: clean configuration, tail ice accreation, wing ice
accreation and completely iced aircraft configuration. At the end of this paper, a comparasion
of the set of performances for various masses, heights and cases of icing was made.

• Keywords: DHC-6 Twin Otter serije 300; pojava leda; utjecaj zaleđivanja; aerodinamički koeficijenti; performanse zrakoplova; ravnotežni let
• Keywords (english): DHC-6 Twin Otter Series 300; ice accreation; cing effect; aerodynamic coefficient; aircraft performances; trim
• Language: croatian
• URN:NBN: urn:nbn:hr:235:307291
• Study programme: Title: Aeronautical Studies; 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: 2020-09-16 09:20:13