Experimental Investigation of Propeller Effect on Aerodynamic Performance of a Nonslender Delta Wing

Yıl 2025, Cilt: 40 Sayı: 2, 445 - 452, 02.07.2025

Ahmet Ertuğrul Bay , Tolgay Kara

https://doi.org/10.21605/cukurovaumfd.1699155

Öz

Propulsion systems are one of the most important components of aircraft that affect their performance. While designing the propulsion system, researchers need to design the position of the propulsion system according to the requirements of the aircraft as well as the choice of materials to be used. In this research, the effects of propeller effects on aerodynamic forces, aerodynamic performance and moment coefficients of a delta wing with NACA 0012 geometry and sweep angle of 50 degrees in tractor and pusher configurations were investigated and compared with no propeller (base) configuration. The tractor configuration provided the highest lift. Sharp stall phenomenon is not observed in pusher configuration. When the drag coefficients are examined, it is seen that the drag of the tractor configuration is higher up to 21 degrees, after 21 degrees the drag coefficient of the pusher configuration increases, but still the aerodynamic performance (L/D) of the tractor configuration is higher than the pusher configuration at 12 degrees where they have the maximum L/D ratio. In the pusher configuration, which reattach the separated flow to the surface, the static stability has slightly increased instability, while in the tractor configuration, abrupt changes are seen depending on the stall angle, which requires more attention to the controller design in UAV design.

Anahtar Kelimeler

Propeller Effect , Non-slender Delta Wing , Aerodynamic Performance , Static-Stability

İnce Olmayan Delta Kanadın Aerodinamik Performansına Pervane Etkisinin Deneysel Olarak İncelenmesi

Öz

İtki sistemleri, hava taşıtlarının performansını etkileyen en önemli bileşenlerden biridir. İtki sistemi tasarlanırken, araştırmacıların kullanılacak malzeme seçiminin yanı sıra itki sisteminin konumunu da hava aracının gereksinimlerine göre tasarlamaları gerekmektedir. Bu çalışmada, NACA 0012 geometrili ve 50 derece süpürme açısına sahip bir delta kanadın çekici ve itici konfigürasyonlarında pervane etkilerinin aerodinamik kuvvetler, aerodinamik performans ve moment katsayıları üzerindeki etkileri incelenmiş ve pervanesiz (baz) konfigürasyon ile karşılaştırılmıştır. Çekici konfigürasyonu en yüksek kaldırma kuvvetini sağlamıştır. İtici konfigürasyonunda keskin stall fenomeni gözlenmemiştir. Sürükleme katsayıları incelendiğinde 21 dereceye kadar traktör konfigürasyonunun sürüklemesinin daha yüksek olduğu, 21 dereceden sonra itici konfigürasyonunun sürükleme katsayısının arttığı ancak yine de maksimum L/D oranına sahip oldukları 12 derecede çekici konfigürasyonunun aerodinamik performansının (L/D) itici konfigürasyonundan daha yüksek olduğu görülmektedir. Ayrılan akışı yüzeye tekrar bağlayan itici konfigürasyonunda statik kararlılık kararsızlığı biraz artırırken, çekici konfigürasyonunda stall açısına bağlı olarak ani değişimler görülmekte, bu da İHA tasarımında kontrolör tasarımına daha fazla dikkat edilmesini gerektirmektedir.

Anahtar Kelimeler

Pervane etkisi , Nonslender delta kanat , Aerodinamik performans , Statik kararlılık

Kaynakça

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