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Challenges and trends of changing from hover to forward flight for a converted hybrid fixed wing VTOL UAS from automatic flight control system perspective

Capabilities of fixed-wing UAS to perform missions have been well studied and documented today. And so has for multirotor drones. It is also well accepted that both platforms have their strengths and limitations during operation. For this reason, one suggestion to address those limitations is to cre...

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Main Authors: Zaludin, Zairil Azhar, Mohd Harithuddin, Ahmad Salahuddin
Format: Conference or Workshop Item
Language:English
Published: IEEE 2019
Online Access:http://psasir.upm.edu.my/id/eprint/78120/1/Challenges%20and%20trends%20of%20changing%20from%20hover%20to%20forward%20flight%20for%20a%20converted%20hybrid%20fixed%20wing%20VTOL%20UAS%20from%20automatic%20flight%20control%20system%20perspective.pdf
http://psasir.upm.edu.my/id/eprint/78120/
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spelling my.upm.eprints.781202020-06-15T01:48:39Z http://psasir.upm.edu.my/id/eprint/78120/ Challenges and trends of changing from hover to forward flight for a converted hybrid fixed wing VTOL UAS from automatic flight control system perspective Zaludin, Zairil Azhar Mohd Harithuddin, Ahmad Salahuddin Capabilities of fixed-wing UAS to perform missions have been well studied and documented today. And so has for multirotor drones. It is also well accepted that both platforms have their strengths and limitations during operation. For this reason, one suggestion to address those limitations is to create a 'hybrid' UAS which will incorporate the best capabilities of both types of aircraft. This paper proposes retaining the best features of an already flying long endurance fixed wing UAS and then incorporate a vertical takeoff capability. The paper looks at the challenges and issues of transitioning from hovering to forward flight. From the 3 strategies proposed, Strategy 1 suggests to increase the speed of rotation of the 2 aft rotors therefore, causing the aircraft to pitch forward, hence generating a forward speed from hovering. For Strategy 2 during hovering, all 4 rotors are spinning at the same speed hence generating equal balanced thrust upwards for the hybrid aircraft. Then, the aircraft main petrol engine is set to full throttle to generate forward thrust to commence flight forward. For Strategy 3, the 4 rotors are tasked as in Strategy 2 but once a safe altitude is reached, the 4 rotors are disengaged to let the aircraft nose drop forward to commence a controlled dive. At the same time, the aircraft main petrol engine is set to full throttle to gain airspeed to continue with normal forward flight. The paper concludes with a brief description of the role of automatic flight control systems responsible for regulating the transition phase, setting up the future work for future work on modelling, simulation, fabrication and flight testing. IEEE 2019 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/78120/1/Challenges%20and%20trends%20of%20changing%20from%20hover%20to%20forward%20flight%20for%20a%20converted%20hybrid%20fixed%20wing%20VTOL%20UAS%20from%20automatic%20flight%20control%20system%20perspective.pdf Zaludin, Zairil Azhar and Mohd Harithuddin, Ahmad Salahuddin (2019) Challenges and trends of changing from hover to forward flight for a converted hybrid fixed wing VTOL UAS from automatic flight control system perspective. In: 2019 IEEE 9th International Conference on System Engineering and Technology (ICSET 2019), 7 Oct. 2019, Shah Alam, Selangor, Malaysia. (pp. 247-252). 10.1109/ICSEngT.2019.8906483
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Capabilities of fixed-wing UAS to perform missions have been well studied and documented today. And so has for multirotor drones. It is also well accepted that both platforms have their strengths and limitations during operation. For this reason, one suggestion to address those limitations is to create a 'hybrid' UAS which will incorporate the best capabilities of both types of aircraft. This paper proposes retaining the best features of an already flying long endurance fixed wing UAS and then incorporate a vertical takeoff capability. The paper looks at the challenges and issues of transitioning from hovering to forward flight. From the 3 strategies proposed, Strategy 1 suggests to increase the speed of rotation of the 2 aft rotors therefore, causing the aircraft to pitch forward, hence generating a forward speed from hovering. For Strategy 2 during hovering, all 4 rotors are spinning at the same speed hence generating equal balanced thrust upwards for the hybrid aircraft. Then, the aircraft main petrol engine is set to full throttle to generate forward thrust to commence flight forward. For Strategy 3, the 4 rotors are tasked as in Strategy 2 but once a safe altitude is reached, the 4 rotors are disengaged to let the aircraft nose drop forward to commence a controlled dive. At the same time, the aircraft main petrol engine is set to full throttle to gain airspeed to continue with normal forward flight. The paper concludes with a brief description of the role of automatic flight control systems responsible for regulating the transition phase, setting up the future work for future work on modelling, simulation, fabrication and flight testing.
format Conference or Workshop Item
author Zaludin, Zairil Azhar
Mohd Harithuddin, Ahmad Salahuddin
spellingShingle Zaludin, Zairil Azhar
Mohd Harithuddin, Ahmad Salahuddin
Challenges and trends of changing from hover to forward flight for a converted hybrid fixed wing VTOL UAS from automatic flight control system perspective
author_facet Zaludin, Zairil Azhar
Mohd Harithuddin, Ahmad Salahuddin
author_sort Zaludin, Zairil Azhar
title Challenges and trends of changing from hover to forward flight for a converted hybrid fixed wing VTOL UAS from automatic flight control system perspective
title_short Challenges and trends of changing from hover to forward flight for a converted hybrid fixed wing VTOL UAS from automatic flight control system perspective
title_full Challenges and trends of changing from hover to forward flight for a converted hybrid fixed wing VTOL UAS from automatic flight control system perspective
title_fullStr Challenges and trends of changing from hover to forward flight for a converted hybrid fixed wing VTOL UAS from automatic flight control system perspective
title_full_unstemmed Challenges and trends of changing from hover to forward flight for a converted hybrid fixed wing VTOL UAS from automatic flight control system perspective
title_sort challenges and trends of changing from hover to forward flight for a converted hybrid fixed wing vtol uas from automatic flight control system perspective
publisher IEEE
publishDate 2019
url http://psasir.upm.edu.my/id/eprint/78120/1/Challenges%20and%20trends%20of%20changing%20from%20hover%20to%20forward%20flight%20for%20a%20converted%20hybrid%20fixed%20wing%20VTOL%20UAS%20from%20automatic%20flight%20control%20system%20perspective.pdf
http://psasir.upm.edu.my/id/eprint/78120/
_version_ 1671341100673007616
score 13.211869

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