Preliminary Base Pressures Obtained from the X-15 Airplane at Mach Numbers from 1.1 to 3.2 PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Preliminary Base Pressures Obtained from the X-15 Airplane at Mach Numbers from 1.1 to 3.2 PDF full book. Access full book title Preliminary Base Pressures Obtained from the X-15 Airplane at Mach Numbers from 1.1 to 3.2 by Edwin J. Saltzman. Download full books in PDF and EPUB format.
Author: Edwin J. Saltzman Publisher: ISBN: Category : Languages : en Pages : 1
Book Description
Base pressure measurements were made on the fuselage, 10 degree-wedge vertical fin, and side fairing of the X-15 airplane. Data are presented for Mach numbers between 1.1 and 3.2 for both powered and unpowered flight. Comparisons are made with data from small-scale-model tests, semiempirical estimates, and theory. The results of this preliminary study show that operation of the interim rocket engines reduces the base drag of the X-15 by 25 to 35% throughout the test Mach number range. Values of base drag coefficient for the side fairing and fuselage obtained from X-15 wind-tunnel models were adequate for predicting the over-all full-scale performance of the test airplane. The leading-edge sweep of the upper movable vertical fin was not an important factor affecting the fin base pressure. The power-off base pressure coefficients of the upper movable vertical fin are in general agreement with the small-scale blunt-trailing-edge-wing data of several investigators and with two-dimensional t eory. (Author).