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Filtering by: Contributor advisor sim Costello, Mark F. Remove constraint Contributor advisor sim: Costello, Mark F.

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Robust lateral pulse jet control of an atmospheric rocket

Creator:

Burchett, Bradley Thomas

Abstract:

Uncontrolled direct fire rockets exhibit high impact point dispersion, even at relatively short range, and as such have been employed as area weapons on the battlefield. In order to reduce the dispersion of a direct fire rocket, feedback control is employed to fire short-duration solid rocket pulses mounted near the...

Resource Type:

Dissertation
Two projectiles connected by a flexible tether dropped in the atmosphere

Creator:

Frost, Geoffrey W.

Abstract:

This study investigates the atmospheric flight dynamics of a munition system and the effect of a tether reel resistance mechanism for limiting the impact that the unreeling process has on the munition system. The munition system consisting of two projectiles connected by a tether line is released from an aircraft...

Resource Type:

Masters Thesis
Lateral pulse jet control of a direct fire atmospheric rocket using an inertial measurement unit sensor system

Creator:

Jitpraphai, Thanat

Abstract:

Impact point dispersion of a direct fire rocket can be drastically reduced with a ring of appropriately sized lateral pulse jets coupled to a trajectory tracking flight control system. The system is shown to work well against uncertainty in the form of initial off-axis angular velocity perturbations as well as...

Resource Type:

Dissertation
Performance of a smart direct fire penetrator using a ram air controlled mechanism

Creator:

Chandgadkar, Siddharth Suhaschandra

Abstract:

The effectiveness of a direct fire penetrator projectile equipped with an actively controlled ram air mechanism is investigated through dynamic simulation. The ram air control mechanism consists of a rotary sleeve valve which directs air flow from an inlet at the center of the nose to side ports. The projectile...

Resource Type:

Masters Thesis
Solutions of plate equation for the prediction of ink droplets in inkjet cartridges

Creator:

Sangplung, Saangrut

Abstract:

Droplet formation in inkjet cartridges has been studied for several decades to improve print qualities. Currents and rigid nozzle plates are used inside the cartridge to fix the size of droplets exiting the chamber. This research is focused on studying the effect of nozzle flexibility on droplet formation. A flexible...

Resource Type:

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

Creator:

Frost, Geoffrey W.

Abstract:

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...

Resource Type:

Dissertation
Modified linear theory and Kalman filtering for in flight projectile impact point prediction

Creator:

Hainz, Leonard C.

Abstract:

A method for real time in-flight prediction of the ground impact point of an indirect fire projectile is investigated. The method investigated is comprised of a combination of an impact point predictor and an extended Kalman filter state estimator based on modified linear theory. The modified linear theory model is...

Resource Type:

Masters Thesis
Model predictive control of a direct fire projectile equipped with canards

Creator:

Ollerenshaw, Douglas R.

Abstract:

Launch uncertainties in uncontrolled direct fire projectiles can lead to significant impact point dispersion, even at relatively short range. A model predictive control scheme for direct fire projectiles is investigated to reduce impact point dispersion. The control law depends on projectile linear theory to create an approximate linear model of...

Resource Type:

Masters Thesis
Dynamic modeling, control aspects and model predictive control of a parafoil and payload system

Creator:

Slegers, Nathan J.

Abstract:

Control issues are investigated for a parafoil and payload system with left and right parafoil brakes used as the control mechanism. It is shown through dynamic modeling and simulation that parafoil and payload systems can exhibit two basic modes of lateral control, namely, roll and skid steering. Using a small...

Resource Type:

Dissertation
Initial state estimation for a gun launched projectile in a spatially varying magnetic field

Creator:

Chawla, Feni

Abstract:

Smart weapons promise to provide leap ahead capability with regard to accuracy and engagement range for medium and large caliber projectiles. One of the most critical components of a smart weapon system is its sensor suite that provides position, orientation, and velocity information as the projectile flies down range so...

Resource Type:

Masters Thesis

Limit your search

Academic Affiliation

Mechanical Engineering9
Electrical Engineering and Computer Science1

Advisor

Costello, Mark F.10
Shor, Molly H.1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 2000 to 2007

View distribution

Committee Member

Higdon, Robert L.1
Lien, Mei-Ching1

Creator

Frost, Geoffrey W.2
Burchett, Bradley Thomas1
Chandgadkar, Siddharth Suhaschandra1
Chawla, Feni1
Hainz, Leonard C.1
more Creators »

Date

Date range begin – Date range end

Current results range from 1999 to 2006

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Decade

2000-20099
1990-19991

Degree Field

Mechanical Engineering9
Electrical and Computer Engineering1

Degree Level

Master's6
Doctoral4

Degree Name

Master of Science (M.S.)6
Doctor of Philosophy (Ph.D.)4

File Format

application/pdf1

Language

English [eng]10

License

All rights reserved3

Non-Academic Affiliation

Oregon State University. Graduate School10

Peer Reviewed

No8

Resource Type

Masters Thesis6
Dissertation4

Rights Statement

In Copyright6
Copyright Not Evaluated4

Subject

Projectiles, Aerial -- Aerodynamics2
Projectiles, Aerial -- Aerodynamics -- Mathematical models2
Rockets (Ordnance)2
Target acquisition2
Aerodynamics -- Mathematical models1
more Subjects »

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