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非平面翼の最適設計-揚力と翼根曲げモーメントを与えた時の最小誘導抵抗-
https://jaxa.repo.nii.ac.jp/records/45055
https://jaxa.repo.nii.ac.jp/records/45055851c1700-3e97-4e4f-b34c-ebadb6aded9b
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
naltr00797.pdf (1.4 MB)
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| Item type | テクニカルレポート / Technical Report(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-03-26 | |||||
| タイトル | ||||||
| タイトル | 非平面翼の最適設計-揚力と翼根曲げモーメントを与えた時の最小誘導抵抗- | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_18gh | |||||
| 資源タイプ | technical report | |||||
| その他のタイトル（英） | ||||||
| その他のタイトル | Optimum Design of Nonplanar wings-Minimum Induced Drag for A Given Lift and Wing Root Bending Moment | |||||
| 著者 |
浅井, 圭介
× 浅井, 圭介× ASAI, Keisuke |
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| 著者所属 | ||||||
| 値 | 航空宇宙技術研究所空気力学第二部 | |||||
| 著者所属（英） | ||||||
| 言語 | en | |||||
| 値 | Second Aerodynamics Division, National Aerospace Laboratory(NAL) | |||||
| 出版者 | ||||||
| 出版者 | 航空宇宙技術研究所 | |||||
| 出版者（英） | ||||||
| 出版者 | National Aerospace Laboratory(NAL) | |||||
| 書誌情報 |
航空宇宙技術研究所報告 en : Technical Report of National Aerospace Laboratory TR-797 巻 797, p. 21, 発行日 1984-01 |
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| 抄録（英） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | The objective of the present paper is to discuss the application of nonplanar wings such as Whitcomb’s winglet to new subsonic transport airplanes. A simple numerical method has been developed to calculate the minimum induced drag for a wing of an arbitrary nonplanar configuration, using the Trefftz-plane(far-field) analysis and the Lagrangean multiplier technique. For a series of wing/winglet combinations and several more complex forms such as curved wings, the value of the induced drag efficiency parameter‘l/e’is evaluated and compared with that of a conventional planar wing. When comparing the induced drag benefits, it is assumed that both wings have the same‘extended’wing planform rather than the‘projected’one. And, to take account of the trade-offs between wing aerodynamic efficiency and wing structural weight, the wing root bending moment as well as the wing total lift are kept constant. With these constraints, the drag performances for both wings could be compared without any ambiguity associated with structural weight and wing surface skin friction. The results obtained show that the minimum induced drag of every nonplanar wing analyzed here is not less than that of a planar wing except in the case of relatively small values of restricted wing root bending moment. Thus, it is concluded that a planar wing is superior to a nonplanar wing from the view point of cruise drag performance. | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0389-4010 | |||||
| 資料番号 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 資料番号: NALTR0797000 | |||||
| レポート番号 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | レポート番号: NAL TR-797 | |||||
