The linear theory for spinning projectiles is extended to account for the application of a simple lateral square impulse activated during free flight. Analytical results are shown to produce simple contributions to the familiar aerodynamic jump formulation. Inquiries regarding jump smearing caused by nonzero impulse length are addressed and answered. The formulation shows for sufficiently long-term target interception, lateral impulse trajectory response for a guided projectile is independent of when the impulse is activated during the yaw cycle. Simple limits show the presented results reducing to those previously found for a zero-spin projectile acted upon by a singular lateral impulse.
Issue Section:
Technical Papers
1.
Harkins, T. E., and Brown, T. G., 1999, “Using Active Damping as a Precision-Enhancing Technology for 2.75-Inch Rockets,” U.S. Army Research Laboratory, Aberdeen Proving Ground, MD, ARL-TR-1772.
2.
Jitpraphai
, T.
, and Costello
, M.
, 2001
, “Dispersion Reduction of a Direct Fire Rocket Using Lateral Pulse Jets
,” J. Spacecr. Rockets
, 38
, pp. 929
–936
.3.
Amitay
, M.
, Smith
, D.
, Kibens
, V.
, Parekh
, D.
, and Glezer
, A.
, 2001
, “Aerodynamic Flow Control Over an Unconventional Airfoil Using Synthetic Jet Actuators
,” AIAA J.
, 39
, pp. 361
–370
.4.
Murphy, C. H., 1963, “Free Flight Motion of Symmetric Missiles,” BRL Report No. 1216, U.S. Army Ballistic Research Laboratories, Aberdeen Proving Ground, MD.
5.
McCoy, R. L., 1999, Modern Exterior Ballistics: The Launch and Flight Dynamics of Symmetric Projectiles, Schiffer Publishing Ltd., Atglen, PA.
6.
Guidos
, B.
, and Cooper
, G.
, 2002
, “Linearized Motion of a Fin-Stabilized Projectile Subjected to a Lateral Impulse
,” J. Spacecr. Rockets
, 39
, pp. 384
–39
.Copyright © 2004
by ASME
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