Effect of Wing Modifications on the Longitudinal Stability of a Tailless All-wing Airplane Model
Effect of Wing Modifications on the Longitudinal Stability of a Tailless All-wing Airplane Model

Author: Charles L. Seacord

Publisher:

Published: 1945

Total Pages: 30

ISBN-13:

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Summary: An investigation of the power-off longitudinal stability characteristics of a tailless all-wing airplane model with various wing modifications has been made in the Langley free-flight tunnel. Force and tuft tests were made on the model in the original condition, with the wing tips rotated for washout, with rectangular and swept-forward tips, and with various slat arrangements. Flight tests were made with the original wing and with the original wing equipped with the most promising modifications. The results indicated that changes in tip plan form or rotation of the wing tips did not appreciably reduce the instability at high lift coefficients. Addition of wing slats, however, improved the longitudinal stability at the stall when the slat extended far enough inboard to cover the area that tended to stall first.

Effect of Wing Modifications on the Longitudinal Stability of a Tailless All-wing Airplane Model
Effect of Wing Modifications on the Longitudinal Stability of a Tailless All-wing Airplane Model

Author: Langley Aeronautical Laboratory

Publisher: Hassell Street Press

Published: 2021-09-09

Total Pages: 30

ISBN-13: 9781014076663

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This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Flight Investigation of the Cooling Characteristics of a Two-row Radial Engine Installation
Flight Investigation of the Cooling Characteristics of a Two-row Radial Engine Installation

Author: E. Barton Bell

Publisher:

Published: 1946

Total Pages: 558

ISBN-13:

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Flight tests have been conducted to determine the cooling characteristics of a two-row radial engine at altitude in a twin-engine airplane and to investigate the accuracy with which low-altitude cooling-correlation equations can be used for making cooling predictions at higher altitudes. The test engine was operated over a wide range of condtions in level flight at density altitudes of 5000 and 20,000 feet.