Influence of surface imperfections caused by thruster elements on the aerodynamics of a supersonic projectile
by R. Hruschka; D. Klatt; F. Leopold
International Journal of Engineering Systems Modelling and Simulation (IJESMS), Vol. 6, No. 3/4, 2014

Abstract: Pulsed side jet thrusters can be used to correct the trajectory of supersonic projectiles. After their time-of-action, these pyrotechnical thrusters leave a hole in the shaft, which sometimes also features a protuberance or burr at its rim. The current work quantifies the aerodynamic interference caused by this sub-boundary-layer disturbance by means of 3-axis-force balance measurements in a supersonic wind tunnel at Mach 3 at angles of attack between 0 and 10 degrees. Supplementary numerical time- and scale-resolving detached eddy simulations (DES) of the wind tunnel setup as well as basic theoretical correlations also support the experimental result that aerodynamic coefficients change by less than 2%, if the hole diameter is in the order of half a calibre and surface deformations protrude less than 2.5% of the calibre.

Online publication date: Sat, 26-Jul-2014

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Engineering Systems Modelling and Simulation (IJESMS):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com