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Yamada, Taichi; Suzuki, Soichiro; Ito, Rintaro; Ota, Yua*; Kaneko, Eiichiro*; Ogane, Katsuji*; Kawabata, Kuniaki
Advanced Robotics, 12 Pages, 2025/10
Times Cited Count：0 Percentile：0.00(Robotics)We develop a test method to evaluate the vertical moving performance of an unmanned aircraft system (UAS) in a narrow environment, specifically performance for ascending through a narrow aperture. This research aims to boost the UAS industry by pushing for the expansion of UAS use into various places and situations. UAS users should know whether the UAS performance is enough to achieve their objectives and what UAS suits them. However, discussing what/how much UASs can do is complex, especially in a place or situation affecting some UAS functions. Thus, the test method provides an easy-to-understand evaluation of UAS performance for mobility to access a destination in a narrow environment, even for UAS users without technical knowledge. To develop an acceptable test method for the UAS industry, we repeatedly held demonstrations and discussions with UAS manufacturers and users to incorporate their opinions from the early stages of this research. In addition, the experiments show that the test method appropriately indicates the difference in UAS performance. This paper describes the approach of UAS performance evaluation to promote the UAS industry, the development along with UAS users' opinions, and the result of the experiments to compare the type of UAS and consideration.
100 MeV/nucleonPohl, T.*; Sun, Y. L.*; Obertelli, A.*; Lee, J.*; G
mez-Ramos, M.*; Ogata, Kazuyuki*; Yoshida, Kazuki; Cai, B. S.*; Yuan, C. X.*; Brown, B. A.*; et al.
Physical Review Letters, 130(17), p.172501_1 - 172501_8, 2023/04
Times Cited Count：17 Percentile：87.02(Physics, Multidisciplinary)We report on the first proton-induced single proton- and neutron-removal reactions from the neutron deficient 
O nucleus with large Fermi-surface asymmetry at 100 MeV/nucleon. Our results provide the first quantitative contributions of multiple reaction mechanisms including the quasifree knockout, inelastic scattering, and nucleon transfer processes. It is shown that the inelastic scattering and nucleon transfer, usually neglected at such energy regime, contribute about 50% and 30% to the loosely bound proton and deeply bound neutron removal, respectively.
-Orbital component in the Borromean nucleus 
BYang, Z. H.*; Kubota, Yuki*; Corsi, A.*; Yoshida, Kazuki; Sun, X.-X.*; Li, J. G.*; Kimura, Masaaki*; Michel, N.*; Ogata, Kazuyuki*; Yuan, C. X.*; et al.
Physical Review Letters, 126(8), p.082501_1 - 082501_8, 2021/02
Times Cited Count：84 Percentile：97.06(Physics, Multidisciplinary)A quasifree (
,
) experiment was performed to study the structure of the Borromean nucleus B, which had long been considered to have a neutron halo. By analyzing the momentum distributions and exclusive cross sections, we obtained the spectroscopic factors for 
and 
orbitals, and a surprisingly small percentage of 9(2)% was determined for . Our finding of such a small component and the halo features reported in prior experiments can be explained by the deformed relativistic Hartree-Bogoliubov theory in continuum, revealing a definite but not dominant neutron halo in B. The present work gives the smallest - or -orbital component among known nuclei exhibiting halo features and implies that the dominant occupation of or orbitals is not a prerequisite for the occurrence of a neutron halo.
Co thin filmDoi, Masaaki*; Mano, Tomonori*; Shiota, Megumi*; Yuasa, Hiromi*; Takeda, Masayasu; Sahashi, Masashi*
no journal, ,
We have reported the high bulk scattering spin-asymmetry coefficient, 
, of an alternate monatomic layered epitaxial film (AML) [Fe/Co]
. This high value of 
and the long-range order parameter of B
structure in FeCo seem to be correlated. The neutron diffraction measurements of the AML [Fe/Co] were performed to determine the order parameter, and the value of about 0.7 was obtained. This value is consistent with a theoretical calculation. We discuss the correlation between the and the order parameter together with the results of [Fe
Co/Cu] and a thin film of the FeCo alloy.
Yamada, Taichi; Ito, Rintaro; Ota, Yua*; Kaneko, Eiichiro*; Ogane, Katsuji*; Kawabata, Kuniaki
no journal, ,
This paper introduces an approach for quantitatively evaluating how difficult the environment is for multicopter flight. The quantitative evaluation of multicopter flight difficulty promotes the expansion of multicopter use into various situations, as it enables multicopter users to understand the risks associated with multicopter use in the target environment and to take measures for safe operation. This research focuses on wind reflections from structures surrounding a multicopter in a narrow space. This research proposes a method for assessing the change in airflow around the multicopter due to wind reflection. This paper also describes an experiment to evaluate airflow changes simulating multicopter flight in a corner of the ceiling.
Yamada, Taichi; Suzuki, Soichiro; Ito, Rintaro; Ota, Yua*; Kaneko, Eiichiro*; Ogane, Katsuji*; Kawabata, Kuniaki
no journal, ,
We develop evaluation methods for unmanned aircraft systems (UAS) in a narrow environment to boost industry. It is not easy to discuss what/much UAS users can do by using the UAS; furthermore, environmental influence makes it more complex. The evaluation method in this research aims to indicate UAS performances in an easy-to-understand form for UAS users and to push UAS use. The method evaluates a task's moving performance because moving is a critical function of UAS and is commonly required in many missions. Specifically, this paper introduces the evaluation method for ascending through a narrow aperture. In addition, this paper introduces an experiment to compare UAS performance by the aperture size.
Iwamoto, Taiki*; Zhang, Yuan*; Kuroda, Masatoshi*; Hirota, Noriaki; Kobayashi, Yuji*; Kimura, Yuta*
no journal, ,
Nowadays, researches on quantitative evaluation of plastic strain and residual stress of stainless steel with various Electron Backscatter Diffraction (abbreviated to EBSD) parameters have been actively conducted. Generally, it is considered that residual stress accumulated near the grain boundary. It might be caused by dislocations and resulted in the increment of the average value of local misorientations. In this study, we focused on EBSD parameters and investigated the applicability of these parameters as an evaluation metric for the depth direction of residual stress in austenitic stainless steel subjected to laser peening.
