@article{19ad8960c96549baa4b7945ce4e8c12a,
title = "Discrete sweeping jets as tools for improving the performance of the V-22",
abstract = "Experiments aimed at delaying flow separation through discrete jets pointing in the direction of streaming and sweeping side to side along the span were conducted on a V-22 airfoil with and without deflected trailing-edge flaps. The results indicated substantial drag reduction and lift increase at moderately low inputs of mass and momentum. Additional experiments were carried out on a semispan V-22 wing/nacelle combination, and they too provided an increase in lift-to-drag ratio L/D of approximately 60% (although active flow control was applied to the wing only). The effectiveness of the sweeping jets on reducing the download force acting on a V-22 full-span powered model in hover was also examined. A 29% reduction in download was realized using the embedded sweeping jets, corresponding approximately to a 2000 lb increase in hover lift.",
author = "Roman Seele and Philipp Tewes and Ren{\'e} Woszidlo and McVeigh, {Michael A.} and Lucas, {Nathaniel J.} and Wygnanski, {Israel J.}",
note = "Funding Information: This project was funded by the Center for Rotorcraft Innovation (CRI) and the National Rotorcraft Technology Center (NRTC), the U.S. Army Aviation and Missile Research, Development, and Engineering Center (AMRDEC) under the Technology Investment Agreement W911W6-06-2-0002, entitled the National Rotorcraft Technology Center Research Program. The authors would like to acknowledge that this research and development was accomplished with the support and guidance of the NRTC and CRI. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the AMRDEC or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes, notwithstanding any copyright notation thereon.",
year = "2009",
doi = "10.2514/1.43663",
language = "English (US)",
volume = "46",
pages = "2098--2106",
journal = "Journal of Aircraft",
issn = "0021-8669",
publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",
number = "6",
}