Wind tunnel evaluation for control transition from elevator to stabilator of small UAV

Zulhilmy Sahwee, Aina Suriani Mahmood, Nazaruddin Abd Rahman, Khairul Salleh Mohamed Sahari

Research output: Contribution to journalArticle

Abstract

Faulty control surface actuator in a small Unmanned Aerial Vehicles (sUAV) could be overcome with a few techniques. Redundant actuators, analytical redundancy or combination of both are normally used as fault accommodation techniques. In this paper, the accommodation technique of faulty elevator actuator is presented. This technique uses a standby control surface as temporary control reallocation. Wind tunnel measurement facility is set up for the experimental validation and it is compared with FoilSim software. Flat plate airfoil which was used as horizontal stabilizer, is simulated using numerical model and it is validated using the wind tunnel test. Then, a flat airfoil is designed to be used as stabilator for the recovery of faulty elevator actuator. Results show the different deflection angle is needed when transferring from one control surface to another. From the analysis, the proposed method could be implemented without affecting the pitch stability during control surface transition. The alternate control surface accommodation technique proves to be promising for higher reliability sUAV in the case of a faulty on-board actuator.

Original languageEnglish
Pages (from-to)1617-1626
Number of pages10
JournalJournal of Engineering Science and Technology
Volume12
Issue number6
Publication statusPublished - Jun 2017

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Elevators
Control surfaces
Unmanned aerial vehicles (UAV)
Wind tunnels
Actuators
Airfoils
Horizontal stabilizers
Redundancy
Numerical models
Recovery

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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title = "Wind tunnel evaluation for control transition from elevator to stabilator of small UAV",
abstract = "Faulty control surface actuator in a small Unmanned Aerial Vehicles (sUAV) could be overcome with a few techniques. Redundant actuators, analytical redundancy or combination of both are normally used as fault accommodation techniques. In this paper, the accommodation technique of faulty elevator actuator is presented. This technique uses a standby control surface as temporary control reallocation. Wind tunnel measurement facility is set up for the experimental validation and it is compared with FoilSim software. Flat plate airfoil which was used as horizontal stabilizer, is simulated using numerical model and it is validated using the wind tunnel test. Then, a flat airfoil is designed to be used as stabilator for the recovery of faulty elevator actuator. Results show the different deflection angle is needed when transferring from one control surface to another. From the analysis, the proposed method could be implemented without affecting the pitch stability during control surface transition. The alternate control surface accommodation technique proves to be promising for higher reliability sUAV in the case of a faulty on-board actuator.",
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Wind tunnel evaluation for control transition from elevator to stabilator of small UAV. / Sahwee, Zulhilmy; Mahmood, Aina Suriani; Rahman, Nazaruddin Abd; Sahari, Khairul Salleh Mohamed.

In: Journal of Engineering Science and Technology, Vol. 12, No. 6, 06.2017, p. 1617-1626.

Research output: Contribution to journalArticle

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