Accession Number : ADA318766

Title :   Development of a Towed Underwater Launch Platform,

Corporate Author : JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB

Personal Author(s) : Parthasarathy, K. N. ; McGrath, B. E. ; Frostbutter, D. A. ; Wozniak, J. J.

PDF Url : ADA318766

Report Date : 1996

Pagination or Media Count : 10

Abstract : The concept of a new test facility to evaluate the underwater launch and flight performance of full-scale missiles and associated launcher systems is described. Results from preliminary studies on estimates of the platform dimensions hydrodynamic characteristics, and platform response to a missile launch impulse are included. The VSAERO panel method code was used to generate hydrodynamic force and moment coefficients for the condition of steady tow at 5 knots. These coefficients were then used to evaluate the platform trim stability under steady tow conditions. Calculations indicate that the platform is stable during all three phases of operation: missile in tube, empty tube, and tube fully flooded. Preliminary estimates of the platform response due to a launch impulse show a recoil that is not expected to significantly alter the fidelity of the in-tube trajectory data.

Descriptors :   *SURFACE TO SURFACE MISSILES, *UNDERWATER, MATHEMATICAL MODELS, GUIDED MISSILES, STABILITY, HYDRODYNAMIC CHARACTERISTICS, PANELS, MOMENTS, CODING, PULSES, FLIGHT, PLATFORMS, RESPONSE, COEFFICIENTS, LAUNCHING, LAUNCHERS, TEST FACILITIES, TOWED BODIES.

Subject Categories : Surface-launched Guided Missiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE