Nd attitude with the test object by optical solutions, and EPS (electromagnetic position sensor) had been proposed for the measurement system with the MSBS [15]. Meanwhile, they also performed researches to expand the usable area in the MSBS away in the existing static tests, and published final results on a novel electromagnet array and sensor program which makes it possible for the MSBS to stably levitate a test object even though the object rotates 360 degrees about a vertical axis [16,17]. Recently, connected investigation is being actively carried out at JAXA, Fit, and Korea Sophisticated Institute of Science and Technologies (KAIST). Sawada et. al., of JAXA made use of a 60 60 cm MSBS to measure the drag coefficient of a spherical object with respect for the Reynolds number. It was the very first on the planet to measure the drag coefficient of a spherical object in the area with the maximum Reynolds variety of 3.5 105 utilizing the MSBS devoid of the influence of a supporting SNX-0723 Anti-infection device, along with the final results agreed effectively together with the drag coefficient of a spherical object measured by Vlajinac in 1972 making use of the MSBS [18]. Higuchi et al. performed an experiment applying PIV to observe the flow about a cylinder aligned in the wind tunnel path employing the JAXA 60 60 cm MSBS in 2006. As opposed to the current wind tunnel experiment, inside the wind tunnel experiment employing the MSBS, there was no disturbance by the support device. For that reason, the flow around the test object could be accurately observed, plus the shear flow reattachment phenomenon in line with the fineness ratio of the cylinder was visualized [19,20]. Shinji et al. presented the outcomes on the drag coefficient measurement for cylindrical test objects aligned inside the freestream Moclobemide-d4 supplier direction with several low fineness ratios by way of wind tunnel tests employing the MSBS. In accordance with this study, it is confirmed that the Strouhal number of the lift force as well as the side force fluctuated by vortex shedding is 0.15 in popular no matter the fineness ratio of your cylinder model, although the magnitude of fluctuation is associated with the ratio [21]. Kawamura et al. of Fit measured the drag coefficient of a spherical object with respect to Reynolds quantity working with the MSBS owned by Match in 2003. It was confirmed that, because the Reynolds quantity elevated, the drag coefficient was close to the generally recognized value of 0.47 [22]. Meanwhile, analysis was also carried out to work with the MSBS for the design of an attitude control method of unmanned aerial cars (UAVs) by Lee et al. of KAIST. Because the magnitude and direction in the magnetic force and moment of the MSBS are generated by the control commandAerospace 2021, eight,three ofcalculated in the control system, it is possible to arbitrarily adjust them. If the command calculated in the handle technique to get a precise degree of freedom on the test object is zero, the test object is placed within a free motion state in that degree of freedom. Then, when the control command is restored at a preferred instant, the corresponding degree of freedom of your test object is constrained by the restored magnetic force or moment. Lee showed that it truly is feasible, utilizing these options, to conduct intensive flight tests whilst the safety of your UAV is guaranteed via wind tunnel tests using the MSBS [23]. Taking advantage of your reality that it is attainable to freely handle the force and moment due to magnetic field inside the test section of the MSBS, it will likely be probable to conduct a vibration test of a structure exposed to aerodynamic loads with out the influence of the mechan.
