NASA Technical Reports Server (NTRS) 19880006560: Peacekeeper tank slosh modelReportar como inadecuado




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Information on a tank slosh model for Peacekeeper missiles is given in viewgraph form. Allowable vehicle errors for nose cone ejection clearance, vehicle maneuver sloshing problems, slosh-moment prediction, slosh surface specification, code validation, experimental model-computational model comparison and the propellant storage assembly are covered

Autor: NASA Technical Reports Server (NTRS)

Fuente: https://archive.org/


Introducción



4 J- Peacekeeper Tank Slash Model M a t e r i a l Presented by Sidney H .
Schwartz Rockwell I n t e r n a t i o n a l , Rocketdyne D i v i s i o n 355 MOTI-IATIOM FOR ANALYZING SLOSH IN PEACEKEEPER AFFECTEO BY TANK SLOSH - - - - - - - - ALLOWABLE VEHICLE ERRORS FOR NOSE CONE EJECTION CLEARANCE t G-, 1 VELOCITY E R R O H O .
l Z * 356 IN. SEC. - SLOSH PROBLEM VEHICLE MANEUWER r r VEIIICLE MANEUVER , T A N K SLOSH FORCES , & MOMENTS 1 ERRATIC VEHICLE BEHAVIOR c CLEAnANCE ~~ J ERRORS -- CURRENT MODELS UNSUITABLE PENDULUM MODEL (MMA) NOT APPLICABLE I N ZERO G BAFFLED TANKS SOLA-VOF INDEL (MDAC 1 I NSUFFI C I EN1 2-D (3-D NECESSARY) STAIR STEP TANK WALLS NO BAFFLE-SCREEN RES I STANCE 357 CONTROL SYSTEM; PROBLEMS 1 SOLA SLOSH MODEL oDEVELOPED BY FLOW SCIENCES INC.
FOR ROCKETDYNE TO HANDLE: 0 3-0 NAVIER STOKES EQUATIONS IN FINITE DIFFERENCE FORM 0 MULTIPLE FREE SURFACES 0 VISCOUS FLUID LIMITED COMPRESSIBILITY o MODEL ACCOMMODATES: GENERALIZED OBSTACLES 0 POROUS BAFFLES 0 CURVED WALL SIMULATION 0 0 GENERALIZED ROUTINE FOR INPUT OF MOTION FORCING FUNCTIONS MODEL CALCULATES TANK FORCES AND MOMENTS CAUSED BY LARGE AMPLITUDE SLOSH SLOSH FORCE - MOMENT PREDICTION DEPENDS ON INITIAL FREE SURFACE CONFIGURATION 0 AMOUNT OF LIQUID IN TANK (PERCENT FILL) INTERNAL TANK GEOMETRY (INCLUDING BAFFLES) LlQlJlD PROPERTIES 0 PAST HISTORY OF MANEUVER (INSTANTANEOUS VELOCITY AND DISPLACEMENT FIELDS OF LIQ-JID) 358 SOLA SLOSH SURFACE SPECIFICATION *GENEHATORS P E R M I T USER T O SPECIFY tiEOME1 R Y OF TANK WALLS AND B A F F L E L O C A T I O N S * W A L L SURFACES ARE SMOOTt4 R A T H E R T H A N S I E P P E D (REPIIESENTED B Y VOF A L G O R I T I I M I MUCH RETTER WALL FORCE PREDICTIONS - - - SOLA SLOSH E A R L I E R MODELS CODE VALIDATION 0 COMPARE EXPERIMENTAL MODEL WITH COMPUTER GENERATED MODEL 0 EXPERIMENTAL MODEL BUILD MODEL TANK WITH BAFFLES TEST APPARATUS WITH SINGLE AXIS OF ROTATION FOR SIMPLICITY TEST APPARATU...





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