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36915

BALLISTIC PERFORMANCE OF A PROJECTILE WITH A DEVELOPED BOATTAIL

Article

Last updated: 04 Jan 2025

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Abstract

ABSTRACT
A computational study using Reynolds-Averaged Navier-Stokes (RANS) equations
has been carried out to investigate air flow past projectiles provided with nonaxisymmetric
boattail at transonic and supersonic speeds. The non-axisymmetric
boattail is formed by cutting the conventional boattail with three flat surfaces having
inclination angle of ten degrees. The present study aims to discuss the effect of the
existence of these flat surfaces on the air flow characteristics compared to typical
projectile having the same base area. One of the study main concerns is the drag
and it impact on the projectile trajectory. The present study shows that the existence
of flat surfaces on the new unconventional projectile boattail is a reason of
weakening the shock wave formed on the boattail. The wake behind the
unconventional projectile base is smaller than that of the conventional model.
Moreover, the unconventional projectile has a lower pitching moment than the typical
projectile at angle of attack of three degrees.

DOI

10.21608/amme.2012.36915

Keywords

Aerodynamics, CFD, Projectiles, non-axisymmetric boattail, triangular boattails, Drag reduction

Authors

First Name

E.

Last Name

El-Awwad

MiddleName

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Affiliation

Egyptian Armed Forces.

Email

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City

-

Orcid

-

First Name

A.

Last Name

Ibrahim

MiddleName

Z.

Affiliation

Egyptian Armed Forces.

Email

-

City

-

Orcid

-

First Name

A.

Last Name

El-Sebae

MiddleName

M.

Affiliation

Egyptian Armed Forces.

Email

-

City

-

Orcid

-

First Name

A.

Last Name

Riad

MiddleName

M.

Affiliation

Egyptian Armed Forces.

Email

-

City

-

Orcid

-

Volume

15

Article Issue

15th International Conference on Applied Mechanics and Mechanical Engineering.

Related Issue

5891

Issue Date

2012-05-01

Receive Date

2019-06-25

Publish Date

2012-05-01

Page Start

1

Page End

18

Print ISSN

2636-4352

Online ISSN

2636-4360

Link

https://amme.journals.ekb.eg/article_36915.html

Detail API

https://amme.journals.ekb.eg/service?article_code=36915

Order

18

Type

Original Article

Type Code

831

Publication Type

Journal

Publication Title

The International Conference on Applied Mechanics and Mechanical Engineering

Publication Link

https://amme.journals.ekb.eg/

MainTitle

BALLISTIC PERFORMANCE OF A PROJECTILE WITH A DEVELOPED BOATTAIL

Details

Type

Article

Created At

22 Jan 2023