The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2015
Filed:
Dec. 14, 2011
Kenji Yoshida, Tokyo, JP;
Kisa Matsushima, Tokyo, JP;
Yoshine Ueda, Tokyo, JP;
Hiroaki Ishikawa, Tokyo, JP;
Kenji Yoshida, Tokyo, JP;
Kisa Matsushima, Tokyo, JP;
Yoshine Ueda, Tokyo, JP;
Hiroaki Ishikawa, Tokyo, JP;
Japan Aerospace Exploration Agency, Tokyo, JP;
Abstract
In designing supersonic aircrafts, a method of designing a natural laminar flow wing is provided which reduces friction drag by delaying boundary layer transition under flight conditions of actual aircrafts. A target Cp distribution on wing upper surface, suited to natural laminarization in which boundary layer transition is delayed rearward in desired Reynolds number states, is defined by a functional type having as coefficients parameters depending on each spanwise station, a sensitivity analysis employing a transition analysis method is applied to the parameters, and a search is performed for the optimum combination of parameters to delay transition rearward.