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Dynamic modeling, control and linear...

Frost, Geoffrey W.

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Dynamic modeling, control and linear theory of a projectile equipped with a rotating internal part.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Dynamic modeling, control and linear theory of a projectile equipped with a rotating internal part./
Author:	Frost, Geoffrey W.
Description:	97 p.
Notes:	Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 1126.
Contained By:	Dissertation Abstracts International66-02B.
Subject:	Engineering, Mechanical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3165846
ISBN:	0542011492

Dynamic modeling, control and linear theory of a projectile equipped with a rotating internal part.
Frost, Geoffrey W.

Dynamic modeling, control and linear theory of a projectile equipped with a rotating internal part. - 97 p.

Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 1126.

Thesis (Ph.D.)--Oregon State University, 2005.

Dynamic modeling of the atmospheric flight mechanics of a projectile equipped with an uncontrolled internal rotating disk is investigated and a modified projectile linear theory is established. It is shown through modeling of this type of projectile that several coefficients of the epicyclic dynamics are altered, leading to changes in the fast and slow epicyclic modes. A study of the frequency and damping properties of the epicyclic modes is conducted by systematically varying disk orientation, location, mass, and rotational speed. It is shown that the presence of an internal rotating disk can cause substantial changes in the epicyclic dynamics, suggesting the potential of a rotating internal part as a possible control mechanism. A further study considers the active trajectory control of a projectile using a mass unbalance, created by the radial orientation of an internal part. To evaluate the potential of this concept, a seven degree-of-freedom flight dynamic model of a projectile equipped with an internal part is defined. It is shown that by holding the internal part fixed with respect to a non-rolling reference frame, predictable trajectory changes are generated including predictable impact point changes. It is also shown that using the same control mechanism and destabilizing the projectile by fundamentally altering the inertia and, or aerodynamic properties of the projectile can lead to greater control authority.

ISBN: 0542011492Subjects--Topical Terms:

783786
Engineering, Mechanical.

Dynamic modeling, control and linear theory of a projectile equipped with a rotating internal part.
LDR:02373nmm 2200289 4500 001 1847905
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008 130614s2005 eng d
020 $a 0542011492
035 $a (UnM)AAI3165846
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040 $a UnM $c UnM
100 1 $a Frost, Geoffrey W. $3 1935932
245 1 0 $a Dynamic modeling, control and linear theory of a projectile equipped with a rotating internal part.
300 $a 97 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 1126.
500 $a Adviser: Mark F. Costello.
502 $a Thesis (Ph.D.)--Oregon State University, 2005.
520 $a Dynamic modeling of the atmospheric flight mechanics of a projectile equipped with an uncontrolled internal rotating disk is investigated and a modified projectile linear theory is established. It is shown through modeling of this type of projectile that several coefficients of the epicyclic dynamics are altered, leading to changes in the fast and slow epicyclic modes. A study of the frequency and damping properties of the epicyclic modes is conducted by systematically varying disk orientation, location, mass, and rotational speed. It is shown that the presence of an internal rotating disk can cause substantial changes in the epicyclic dynamics, suggesting the potential of a rotating internal part as a possible control mechanism. A further study considers the active trajectory control of a projectile using a mass unbalance, created by the radial orientation of an internal part. To evaluate the potential of this concept, a seven degree-of-freedom flight dynamic model of a projectile equipped with an internal part is defined. It is shown that by holding the internal part fixed with respect to a non-rolling reference frame, predictable trajectory changes are generated including predictable impact point changes. It is also shown that using the same control mechanism and destabilizing the projectile by fundamentally altering the inertia and, or aerodynamic properties of the projectile can lead to greater control authority.
590 $a School code: 0172.
650 4 $a Engineering, Mechanical. $3 783786
650 4 $a Engineering, Aerospace. $3 1018395
650 4 $a Engineering, System Science. $3 1018128
690 $a 0548
690 $a 0538
690 $a 0790
710 2 0 $a Oregon State University. $3 625720
773 0 $t Dissertation Abstracts International $g 66-02B.
790 1 0 $a Costello, Mark F., $e advisor
790 $a 0172
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3165846