liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Design and Testing of a Flight Control System for Unstable Subscale Aircraft
Linköping University, Department of Management and Engineering, Fluid and Mechatronic Systems. Linköping University, Faculty of Science & Engineering.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The primary objective of this thesis was to study, implement, and test low-cost electronic flight control systems (FCS) in remotely piloted subscale research aircraft with relaxed static longitudinal stability. Even though this implementation was carried out in small, simplified test-bed aircraft, it was designed with the aim of being installed later in more complex demonstrator aircraft such as the Generic Future Fighter concept demonstrator project. The recent boom of the unmanned aircraft market has led to the appearance of numerous electronic FCS designed for small-scale vehicles and even hobbyist-type model aircraft. Therefore, the purpose was not to develop a new FCS from scratch, but rather to take advantage of the available technology and to examine the performance of different commercial off-the-shelf (COTS) low-cost systems in statically unstable aircraft models. Two different systems were integrated, calibrated and tested: a simple, gyroscope-based, single-axis controller, and an advanced flight controller with a complete suite of sensors, including a specifically manufactured angle-of-attack transducer. A flight testing methodology and appropriate flight-test data analysis tools were also developed. The satisfactory results are discussed for different flight control laws, and the controller tuning procedure is described. On the other hand, the different test-bed aircraft were analysed from a theoretical point of view by using common aircraft-design methods and conventional preliminary-design tools. The theoretical models were integrated into a flight dynamics simulator, which was compared with flight-test data obtaining a reasonable qualitative correlation. Possible FCS modifications are discussed and some future implementations are proposed, such as the integration of the angle-of-attack in the control laws.

Place, publisher, year, edition, pages
2015. , 88 p.
Keyword [en]
aircraft design, systems integration, subscale flight testing, avionics, flight control system, remotely piloted aircraft
National Category
Aerospace Engineering
Identifiers
URN: urn:nbn:se:liu:diva-121819ISRN: LIU-IEI-TEK-A--15/02190--SEOAI: oai:DiVA.org:liu-121819DiVA: diva2:859608
Subject / course
Mechanical Engineering
Presentation
2015-06-12, A33, A-building, Campus Valla, Linköping University, Linköping, 13:15 (English)
Supervisors
Examiners
Available from: 2015-10-13 Created: 2015-10-07 Last updated: 2015-10-13Bibliographically approved

Open Access in DiVA

Sobron_DesignTestingFCSforUnstableSubscaleAC(26638 kB)1827 downloads
File information
File name FULLTEXT01.pdfFile size 26638 kBChecksum SHA-512
9bf47555ff3e5f2bbe87a8e4ba39f79e2379444e2819e71bb882665461d9ad7f7d38fd06888c86d714b9795bce701f20b33963ef67d62e43daf2327eff082f0c
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Sobron, Alejandro
By organisation
Fluid and Mechatronic SystemsFaculty of Science & Engineering
Aerospace Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 1827 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 496 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf