An experimental investigation of the pointed forebody aerodynamics
department or school: Applied Science, Faculty of
department or school: Mechanical Engineering, Department of
data provider: DSpace
degree campus: UBCV
creator: Stewart, Alan Charles
issued: 2010-09-16T22:12:25Z
issued: 1988
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: An experimental investigation into the pointed forebody aerodynamics has been conducted with particular emphasis on the high angle of attack, zero yaw, side force experienced by fighter aircraft and missiles. Towards this end, a slender cone-cylinder model was tested in the low speed wind tunnel with various passive and active side force alleviation devices installed. The asymmetric flow field, induced by the tip generated pair of helical vortices, and its effects on the model are investigated in the presence of several cone tip geometries: a family of nose-booms; a set of delta strakes; a porous tip; spinning nose-boom tips; as well as the standard cone tip. The effectiveness of each tip in reducing the side force is assessed over a range of flight conditions, and compared with the corresponding standard tip data. Reductions in the side force of up to 50% with nose-booms; 88% with delta strake tips; 50% with a porous tip; and up to 75% with spinning nose-booms have been achieved. The applicability and practicality of these devices in aircraft applications are also considered, however, only in a preliminary fashion.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/28520
note: A N E X P E R I M E N T A L I N V E S T I G A T I O N O F T H E P O I N T E D F O R E B O D Y A E R O D Y N A M I C S B y C A P T A I N A L A N C H A R L E S S T E W A R T B . E n g . , T h e R o y a l M i l i t a r y C o l l e g e o f C a n a d a , 1981 A T H E S I S S U B M I T T E D I N P A R T I A L F U L F I L L M E N T O F T H E R E Q U I R E M E N T S F O R T H E D E G R E E O F M A S T E R S O F A P P L I E D S C I E N C E i n T H E F A C U L T Y O F G R A D U A T E S T U D I E S ( D e p a r t m e n t o f M e c h a n i c a l E n g i n e e r i n g ) We a c c e p t t h i s t h e s i s a s c o n f o r m i n g t o t h e r e q u i r e d s t a n d a r d T H E U N I V E R S I T Y O F B R I T I S H C O L U M B I A A u g u s t 1988 © C o p y r i g h t A l a n C h a r l e s S t e w a r t , 1988 In presenting this thesis in partial fulfilment of the requirements for an advanced degree at the University of British Columbia, I agree that the Library shall make it freely available for reference and study. I further agree that permission for extensive copying of this thesis for scholarly purposes may be granted by the head of my department or by his or her representatives. It is understood that copying or publication of this thesis for financial gain shall not be allowed without my written permission. Department of Mechanical Engineering The University of British Columbia Vancouver, Canada Date 2 August, 1988 DE-6 (2/88) i i ABSTRACT A n e x p e r i m e n t a l i n v e s t i g a t i o n i n t o t h e p o i n t e d f o r e b o d y a e r o d y n a m i c s h a s b e e n c o n d u c t e d w i t h p a r t i c u l a r e m p h a s i s o n t h e h i g h a n g l e o f a t t a c k , z e r o y a w , s i d e f o r c e e x p e r i e n c e d b y f i g h t e r a i r c r a f t a n d m i s s i l e s . T o w a r d s t h i s e n d , a s l e n d e r c o n e - c y l i n d e r m o d e l w a s t e s t e d i n t h e low s p e e d w i n d t u n n e l w i t h v a r i o u s p a s s i v e a n d a c t…
has type: Thesis/Dissertation
is shown at: 10.14288/1.0097922
language: eng
degree discipline: Mechanical Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/28520