Author
Li Zhou
Bio: Li Zhou is an academic researcher from Northwestern Polytechnical University. The author has contributed to research in topics: Nozzle & Turbofan. The author has an hindex of 9, co-authored 34 publications receiving 169 citations.
Topics: Nozzle, Turbofan, Thrust vectoring, Infrared signature, Airflow
Papers
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TL;DR: In this article, the effect of engine swirl on the infrared signature of the serpentine nozzle was investigated, and the results showed that the engine swirl could effectively suppress the infrared signatures, while inducing a small performance loss.
31 citations
28 citations
TL;DR: In this paper, the authors investigated the influences of the shield ratio on the infrared signature of the serpentine nozzles with variable shield ratios, and the results showed that the single serpentine nozzle with a variable shield ratio has better infrared stealth performance than the others.
21 citations
01 Sep 2015
TL;DR: In this article, the authors showed that the infrared radiation signatures of gas turbine engine exhaust are suppressed markedly when equipped with a serpentine nozzle compared to an axisymmetric nozzle.
Abstract: Infrared radiation signatures of gas turbine engine exhaust are suppressed markedly when equipped with a serpentine nozzle compared to an axisymmetric nozzle. The aim of this paper is to research m...
18 citations
Patent•
20 Aug 2014
TL;DR: In this article, a double-S-bend infrared stealth spray pipe structure capable of achieving multi-direction thrust vector control is composed of a rectangular contractionexpansion spray pipe, an upper high-pressure secondary flow spray pipeline and adjusting device, a lower high pressure secondary flow spraying pipeline, adjusting device and a high pressure SFL spraying pipeline.
Abstract: A double-S-bend infrared stealth spray pipe structure capable of achieving multi-direction thrust vector control is composed of a double-S-bend contraction spray pipe, a rectangular contraction-expansion spray pipe, an upper high-pressure secondary flow spray pipeline and adjusting device, a lower high-pressure secondary flow spray pipeline and adjusting device and a high-pressure secondary flow spray pipeline and adjusting device, the upper high-pressure secondary flow spray pipeline and adjusting device and the lower high-pressure secondary flow spray pipeline and adjusting device are arranged on the throat portion of the rectangular contraction-expansion spray pipe, the lower high-pressure secondary flow spray pipeline and adjusting device is arranged on the lower portion of an expansion segment of the rectangular contraction-expansion spray pipe, a thrust vector state and a non-thrust vector state exist in the normal work process, and a high-temperature turbine component is completely covered under the two states. Only all the high-pressure secondary spay pipelines need to be closed at the same time under the non-thrust vector state.
15 citations
Cited by
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Journal Article•
TL;DR: This book by a teacher of statistics (as well as a consultant for "experimenters") is a comprehensive study of the philosophical background for the statistical design of experiment.
Abstract: THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON
13,333 citations
TL;DR: MDA is effective and efficient in terms of radar/infrared integrated stealth design for the intake and exhaust systems of advanced fighters.
31 citations
TL;DR: In this article, the effect of engine swirl on the infrared signature of the serpentine nozzle was investigated, and the results showed that the engine swirl could effectively suppress the infrared signatures, while inducing a small performance loss.
31 citations
TL;DR: The higher level of interaction and the increased mutual sensitivity of engine operation and wing flow field suggest the need to elaborate closely coupled methods to correctly replicate these effects and an assessment of current wind tunnel practices for the design and operation of powered engine simulators.
30 citations
TL;DR: The ultimate design has achieved good results in both radar cross section reduction and infrared radiation suppression and the proposed method is effective and efficient for radar/infrared integrated stealth of helicopter engine intake and exhaust systems.
29 citations