Abstract
An integral function B(X, r, k) appears in the kernel function for subsonic lifting surface theory. UEDA presented an effcient evaluation method of B. We, however, found that there are some points to be improved. It is seen first that the case "X<0 and k=1" is of fundamental importance. Secondly the least amount of computation should be carried out for a specified accuracy. Some devices for this are presented. Third, the near-field formulationis considerably improved; infinite series expansions are used as restrictedly as possible, and three component blocks are constructed so that they vanish individually for r→∞ and X=0. Fourth, a tentative criterion for the truncation error is introduced in the far-field expression. Eventually an overall computation program of B is presented. It may require the least amount of cornputation in order to attain a specified accuracy. It utilizes the near-field expression provided that the function H is obtainable through a series within a specified number of terms. Some numerical results are quite encouraging.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Japan Society for Aeronautical and Space Sciences
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
