A compliant polymorphing wing for small UAVs

Parancheerivilakkathil, Muhammed S.; Ajaj, Rafic M.; Khan, Kamran A.

doi:10.1016/j.cja.2020.03.027

Cited by 41 publications

(14 citation statements)

References 13 publications

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“…A glued connection is used to simulate the attachment between the ribs and the skin. The ribs are made from ABS plastic with Young's modulus of 1.94 GPa and Poisson's ratio of 0.35 [33]. The ribs and skin are modeled using plate (CQUAD) elements.…”

Section: Actuation Force and Skinmentioning

confidence: 99%

A Polymorphing Wing Capable of Span Extension and Variable Pitch

Parancheerivilakkathil

Haider

Ajaj

et al. 2022

Aerospace

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This paper presents the development of a novel polymorphing wing capable of Active Span morphing And Passive Pitching (ASAPP) for small UAVs. The span of an ASAPP wing can be actively extended by up to 25% to enhance aerodynamic efficiency, whilst its pitch near the wingtip can be passively adjusted to alleviate gust loads. To integrate these two morphing mechanisms into one single wing design, each side of the wing is split into two segments (e.g., inboard and outboard segments). The inboard segment is used for span extension whilst the outboard segment is used for passive pitch. The inboard segment consists of a main spar that can translate in the spanwise direction. Flexible skin is used to cover the inboard segment and maintain its aerodynamic shape. The skin transfers the aerodynamic loads to the main spar through a number of ribs that can slide on the main spar through linear plain bearings. A linear actuator located within the fuselage is used for span morphing. The inboard and outboard segments are connected by an overlapping spar surrounded by a torsional spring. The overlapping spar is located ahead of the aerodynamic center of the outboard segment to facilitate passive pitch. The aero-structural design, analysis, and sizing of the ASAPP wing are detailed here. The study shows that the ASAPP wing can be superior to the baseline wing (without morphing) in terms of aerodynamic efficiency, especially when the deformation of the flexible skin is minimal. Moreover, the passive pitching near the wingtip can reduce the root loads significantly, minimizing the weight penalty usually associated with morphing.

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Section: Actuation Force and Skinmentioning

confidence: 99%

A Polymorphing Wing Capable of Span Extension and Variable Pitch

Parancheerivilakkathil

Haider

Ajaj

et al. 2022

Aerospace

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“…Sayap pesawat adalah salah satu komponen utama pesawat terbang yang berfungsi sebagai sebagai penghasil gaya angkat utama [15], adapun bentuk konfigurasi sayap yang akan diimplementasikan pada masa mendatang untuk menggantikan jenis sayap konvensional yaitu sayap morphing. Sayap morphing dapat berubah fasa ketika terbang [8], dan pada bagian chord morphing dapat memperbaiki efisiensi aerodinamika pada sudut serang yang rendah [16]. Gambar 4 menunjukkan sayap morphing yang sudah diaplikasikan pada pesawat saat ini.…”

Section: Sayap Morphingunclassified

Konseptual Desain Pesawat UAV Meniru Cessna 172 Dengan Konfigurasi Sayap Morphing Untuk Misi Trainer

Fadhilah

Intan

2022

JAMET

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Perkembangan UAV/drone di Indonesia sedang berkembang pesat terbukti banyak UAV/drone buatan dalan negeri, karena memang keberadaan drone ini dapat membantu tugas manusia dalam bidang tertentu, maka dari itu peneliti tertarik untuk membuat desain konsep UAV untuk keperluan misi trainer dengan konfigurasi sayap morphing yang akan diperuntukkan untuk pilot pemula sebagai syarat untuk memperoleh sertifikasi pilot drone. Dengan menggunakan perhitungan menggunakan metode Anderson didapatkan luaran perhitungan yang akan dijadikan sebagai acuan dalam penyusunan dan manufaktur konseptual desain pesawat yang akan di dibuat. Didapat estimasi berat awal pesawat UAV meniru Cessna 172 dengan konfigurasi sayap morphing untuk keperluan misi trainer sebesar 5,375433 lb dengan panjang fuselage 5,15304 ft, dan bentang sayap sebesar 5,266345 ft yang diposisikan di atas fuselage, serta ditenagai oleh 1 engine motor brushless sebesar 0,129642 hp.

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“…In general, camber morphing has a significant impact on the aerodynamic forces, but less impact on the inertia and elastic forces when compared to other morphing degrees of freedom. Figure 10 shows a recently developed polymorphing wing capable of camber and chord morphing [120]. Another example of camber morphing concept is the Fishbone Active Camber (FishBAC) developed by Woods and Friswell [121].…”

Section: Cambermentioning

confidence: 99%