Drag Coefficients of Oceanographic Mooring Components

Modeling Satellite Drag Coefficients With Response Surfaces

Calculations of drag coefficients via hydrodynamic cellular automata

The drag coefficient, CD, of an arbitrary shaped object ca;; be calculated by twodimensional hydrodynamic cellular automata. Results spanning nearly four orders of magnitude in the Reynolds number (0.I < Re < 10~) are presented for a simple, hexagonal object, and good quantitative agreement with previous experiments on cylinders is obtained. Hydrodynamical cellular automata (IIDCA), also called...

Thermosphere Density Variability , Drag Coefficients , and Precision Satellite Orbits

Precision orbit ephemerides (POE) are used to estimate atmospheric density along the orbits of CHAMP (Challenging Minisatellite Payload) and GRACE (Gravity Recovery and Climate Experiment). The densities are calibrated against accelerometer derived densities and considering ballistic coefficient estimation results. The 14-hour density solutions are stitched together using a linear weighted blen...

Mooring Line Reliability Analysis of Single Point Mooring (SPM) System under Extreme Wave and Current Conditions

Single Point Mooring (SPM) is a type of offshore facility that is used for the loading and unloading of oil and gas tankers in the sea. In Iran, it is briefly called &ldquo;floating buoy&rdquo;. The present study discussed floating type, fixed to the seabed with mooring chain. The mooring chain of SPM, which is considered one of the important parameters of its design, will be evaluated with reg...

Harbor/Mooring Harbor Defense Concept

The long-term goal of this work is an integrated defense system that provides protection of Navy assets, while in port, from the threat posed by covert swimmers. The general concept is to hail, deter, and/or incapacitate the threat by directing a controlled level of low-frequency acoustic energy at the target location. At the system level, the concept requires combining elements of target detec...