Linear Theory of a Dual-Spin Projectile in Atmospheric Flight

Costello, Mark; Peterson, Allen A.

doi:10.2514/2.4639

Cited by 91 publications

(51 citation statements)

References 11 publications

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“…There is currently a flurry of activity to create innovative physical control mechanisms. Concepts include pulse jets, squibs, synthetic jets (1,2,3), drag brakes (4,5), deployable pins (6, 7), movable nose (8), movable canards (9), dual-spin projectiles (10,11), ram air deflection (12), and internal translating mass (13), to name a few.…”

Section: Introductionmentioning

confidence: 99%

On the Swerve Response of Projectiles to Control Input

Ollerenshaw¹,

Costello²

2008

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Section: Introductionmentioning

confidence: 99%

On the Swerve Response of Projectiles to Control Input

Ollerenshaw¹,

Costello²

2008

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“…In Eq. (4), the right-hand-side vector contains lengthy expressions that are developed in detail in [26]. Derivation of Eq.…”

Section: A Equations Of Motionmentioning

confidence: 99%

“…(4) is accomplished by solving moment balance equations for the projectile about all three body axes and a single moment balance equation on the liquid payload about I P . A detailed derivation of the dual-spin equations is somewhat lengthy and beyond the scope of this paper but is shown in [26]. Given a set of initial conditions, Eqs.…”

Section: A Equations Of Motionmentioning

confidence: 99%

Design Considerations for Stability of Liquid Payload Projectiles

Rogers

Costello

Cooper

2013

Journal of Spacecraft and Rockets

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It is well known that projectiles equipped with liquid payloads experience large destabilizing moments induced by internal motion of the fluid. For some configurations, these moments may lead to catastrophic flight instabilities. This paper explores how payload geometry, fluid spin-up rate, and the magnitude of launch perturbations affect the flight trajectories of projectiles with a liquid payload, including projectile instability. A dynamic simulation model is used in which a projectile rigid-body dynamics representation incorporates liquid moments generated from linearized Navier-Stokes predictions. A novel feature of this simulation is its use of linear filtering within the model, which determines fast-and slow-mode angle-of-attack contributions at each time step to be used in computation of liquid moments. Example cases and Monte Carlo simulations demonstrate how design factors and launch perturbations affect the projectile's tendency to exhibit flight instability. The paper concludes with a summary of advantageous design characteristics that are likely to mitigate the effects of destabilizing liquid moments.

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“…At present, a canard-guided dual-spinning projectile [1][2][3][4][5][6][7][8][9][10][11] has been converted to a controlled spinning projectile with great development potential. It can be used for continuous control to realize precision strikes.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Dual-Spinning Projectile with Canard and Trajectory Filtering

Guan

2018

International Journal of Aerospace Engineering

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The article establishes a seven-degree-of-freedom projectile trajectory model for a new type of spinning projectile. Based on this model, a numerical analysis is performed on the ballistic characteristics of the projectile, and the trajectory of the dual-spinning projectile is filtered with the unscented Kalman filter algorithm, so that the measurement information of projectile onboard equipment is more accurate and more reliable measurement data are provided for the guidance system. The numerical simulation indicates that the dual-spinning projectile is mainly different from the traditional spinning projectile in that a degree of freedom is added in the direction of the axis of the projectile, the forebody of the projectile spins at a low speed or even holds still to improve the control precision of the projectile control system, while the afterbody spins at a high speed maintaining the gyroscopic stability of the projectile. The trajectory filtering performed according to the unscented Kalman filter algorithm can improve the accuracy of measurement data and eliminate the measurement error effectively, so as to obtain more accurate and reliable measurement data.

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Linear Theory of a Dual-Spin Projectile in Atmospheric Flight

Cited by 91 publications

References 11 publications

On the Swerve Response of Projectiles to Control Input

On the Swerve Response of Projectiles to Control Input

Design Considerations for Stability of Liquid Payload Projectiles

Modeling of Dual-Spinning Projectile with Canard and Trajectory Filtering

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