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- W1570602070 abstract "THE AERODYNAMIC CHARACTERISTICS OF CYLINDRICAL VEHICLES MOVING COAXIALLY THROUGH SOLID-WALL TUBES OF FINITE LENGTH ARE EXAMINED, WITH SPECIFIC ATTENTION PAID TO THE DEPENDENCE OF DRAG FORCES ON THE VELOCITY OF APPROACH RATIO, DEFINED AS THE RATIO BETWEEN THE RELATIVE VELOCITY OF INDUCED FLUID PUSHED AHEAD OF A MOVING VEHICLE TO THE ABSOLUTE VELOCITY OF THE VEHICLE. RESEARCH METHODOLOGY COMBINED THEORETICAL ANALYSIS AND PERFORMANCE STUDIES OF A SCALE MODEL. RESULTS OF A DETAILED LITERATURE REVIEW CONDUCTED PRIOR TO THE THEORETICAL FORMULATION ARE OUTLINED. THE THEORETICAL ANALYSIS WAS DIVIDED AMONG FOUR REGIONS OF THE DYNAMIC TUBE ENVIRONMENT: (1) FAR- FLOW REGIONS (BOTH AHEAD OF AND BEHIND THE VEHICLE) (2) ENTRY ZONE (THE VEHICLE-FLUID INTERFACE); (3) TRANSFER PASSAGE; AND (4) WAKE ZONE. VARIOUS EMPIRICAL TECHNIQUES WERE EMPLOYED TO ESTIMATE THE PROBABLE RELATIONSHIP BETWEEN DRAG FORCES AND VELOCITY OF THE VEHICLE WITHIN SPECIFIED PARAMETERS. EXPERIMENTAL TESTING WITH A SCALE MODEL WAS PERFORMED TO DETERMINE WHETHER THEORETICAL RESULTS COULD BE REPLICATED. DEVELOPMENT OF THE MODEL AND RESEARCH METHODOLOGY ARE OUTLINED IN DETAIL. IN ALL, MODELS OF SIX DIFFERENT WEIGHTS WERE TESTED UNDER SIMULATED TUBE FLOW CONDITIONS FOR EACH OF NINE MODEL DESIGNS, MAKING A TOTAL OF 54 INDIVIDUAL EXPERIMENTS. THE WEIGHT VARIATIONS WERE EMPLOYED TO ACHIEVE DIFFERENT RELATIVE VELOCITIES WITH WHICH TO COMPARE AERODYNAMIC DRAG EFFECTS ON DYNAMIC TUBE VEHICLES. APPENDED MATERIAL INCLUDES COMPLETE MODEL SPECIFICATIONS AND A COMPUTER PRINT-OUT OF THE EXPERIMENTAL DATA. /UMTA/" @default.
- W1570602070 created "2016-06-24" @default.
- W1570602070 creator A5008163262 @default.
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- W1570602070 date "1971-10-01" @default.
- W1570602070 modified "2023-09-27" @default.
- W1570602070 title "TUBE VEHICLE SYSTEMS: AERODYNAMIC CHARACTERISTICS" @default.
- W1570602070 hasPublicationYear "1971" @default.
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