{"id":706,"date":"2024-10-09T12:20:51","date_gmt":"2024-10-09T03:20:51","guid":{"rendered":"https:\/\/www.kikulab.it-chiba.ac.jp\/Eng\/?page_id=706"},"modified":"2026-02-24T19:48:05","modified_gmt":"2026-02-24T10:48:05","slug":"flying-fish-robot","status":"publish","type":"page","link":"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/research\/aerial-aquatic-locomotion-robot\/flying-fish-robot\/","title":{"rendered":"Flying Fish Robot"},"content":{"rendered":"<div data-colibri-id=\"706-c1\" class=\"style-425 style-local-706-c1 position-relative\">\n  <!---->\n  <div data-colibri-component=\"section\" data-colibri-id=\"706-c2\" id=\"initial-content\" class=\"h-section h-section-global-spacing d-flex align-items-lg-center align-items-md-center align-items-center style-426 style-local-706-c2 position-relative\">\n    <!---->\n    <!---->\n    <div class=\"h-section-grid-container h-section-boxed-container\">\n      <!---->\n      <div data-colibri-id=\"706-c3\" class=\"h-row-container gutters-row-lg-2 gutters-row-md-2 gutters-row-0 gutters-row-v-lg-2 gutters-row-v-md-2 gutters-row-v-2 style-430 style-local-706-c3 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-2 gutters-col-md-2 gutters-col-0 gutters-col-v-lg-2 gutters-col-v-md-2 gutters-col-v-2\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-431-outer style-local-706-c4-outer\">\n            <div data-colibri-id=\"706-c4\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-431 style-local-706-c4 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c5\" class=\"h-text h-text-component style-432 style-local-706-c5 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"\">\n                    <p>We are developing an aerial\/aquatic robot as an alternative of a common drone with rotary wings. While a multi-copter must change the rotational velocity in the air or underwater because the water resistance is 800 times greater than\n                      that of the air, a flying fish swims underwater by swinging the tail fin and glides in the air by deploying the pectoral fin. On the other hand, while the former must control the attitude vertically for takeoff and landing, the latter\n                      must accelerate from almost 4 m\/s to 20 m\/s on water surface for takeoff. This motion getting the body out above the water surface and swinging the tail fin underwater is known as &#8220;taxiing&#8221;.&nbsp;We are analyzing it by computational\n                      fluid dynamics (CFD) considering gas-liquid two-phase flow and manufacturing the robot realizing this amazing technique.&nbsp;<\/p>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"706-c6\" class=\"h-row-container gutters-row-lg-2 gutters-row-md-2 gutters-row-0 gutters-row-v-lg-2 gutters-row-v-md-2 gutters-row-v-2 style-1238 style-local-706-c6 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-2 gutters-col-md-2 gutters-col-0 gutters-col-v-lg-2 gutters-col-v-md-2 gutters-col-v-2\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1239-outer style-local-706-c7-outer\">\n            <div data-colibri-id=\"706-c7\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-1239 style-local-706-c7 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c8\" class=\"h-text h-text-component style-1240 style-local-706-c8 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"\">\n                    <h6>Taxiing simulation:<\/h6>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"706-c9\" class=\"h-row-container gutters-row-lg-1 gutters-row-md-1 gutters-row-0 gutters-row-v-lg-1 gutters-row-v-md-1 gutters-row-v-1 style-433 style-local-706-c9 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-1 gutters-col-md-1 gutters-col-0 gutters-col-v-lg-1 gutters-col-v-md-1 gutters-col-v-1\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-436-outer style-local-706-c10-outer\">\n            <div data-colibri-id=\"706-c10\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-1 h-px-md-1 h-px-1 v-inner-lg-1 v-inner-md-1 v-inner-1 style-436 style-local-706-c10 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-component=\"video\" data-colibri-id=\"706-c11\" class=\"d-block h-video d-block h-video style-442 style-local-706-c11 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"video-container position-relative\">\n                    <div class=\"h-global-transition-all ratio-inner\"><iframe src=https:\/\/www.youtube.com\/embed\/QrIp-9woiS0?autoplay=0&#038;mute=0&#038;modestbranding=0&#038;rel=0&#038;enablejsapi=1&#038; class='h-video-main'  allowfullscreen><\/iframe><\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-444-outer style-local-706-c13-outer\">\n            <div data-colibri-id=\"706-c13\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-1 h-px-md-1 h-px-1 v-inner-lg-1 v-inner-md-1 v-inner-1 style-444 style-local-706-c13 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-component=\"video\" data-colibri-id=\"706-c14\" class=\"d-block h-video d-block h-video style-507 style-local-706-c14 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"video-container position-relative\">\n                    <div class=\"h-global-transition-all ratio-inner\"><iframe src=https:\/\/www.youtube.com\/embed\/IMdqQMJSaz8?autoplay=0&#038;mute=0&#038;modestbranding=0&#038;rel=0&#038;enablejsapi=1&#038; class='h-video-main'  allowfullscreen><\/iframe><\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-506-outer style-local-706-c16-outer\">\n            <div data-colibri-id=\"706-c16\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-506 style-local-706-c16 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c17\" class=\"h-text h-text-component style-672 style-local-706-c17 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"\">\n                    <p><span style=\"font-weight: 400; font-size: 90%;\">Taxiing motion by CFD simulation:<\/span><\/p>\n                    <p><span style=\"font-weight: 400; font-size: 90%;\">Model: Digital bio-specimen data, 20cm body length<\/span><\/p>\n                    <p><span style=\"font-weight: 400; font-size: 90%;\">Motion: Carangiform with 40Hz<\/span><\/p>\n                    <p><span style=\"font-weight: 400; font-size: 90%;\">CFD: openFOAM, VOF, overset mesh, moving boundary condition<\/span><\/p>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"706-c18\" class=\"h-row-container gutters-row-lg-1 gutters-row-md-1 gutters-row-0 gutters-row-v-lg-1 gutters-row-v-md-1 gutters-row-v-1 style-1247 style-local-706-c18 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-1 gutters-col-md-1 gutters-col-0 gutters-col-v-lg-1 gutters-col-v-md-1 gutters-col-v-1\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1248-outer style-local-706-c19-outer\">\n            <div data-colibri-id=\"706-c19\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-1 h-px-md-1 h-px-1 v-inner-lg-1 v-inner-md-1 v-inner-1 style-1248 style-local-706-c19 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c20\" class=\"d-block style-1249 style-local-706-c20 position-relative h-element\">\n                  <!---->\n                  <div class=\"h-image__frame-container-outer\">\n                    <div class=\"h-image__frame-container\">\n                      <!---->\n                      <!---->\n                      <img loading=\"lazy\" decoding=\"async\" width=\"388\" height=\"406\" src=\"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2024\/11\/cavity.png\" class=\"wp-image-3306 style-1249-image style-local-706-c20-image\" alt=\"\" srcset=\"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2024\/11\/cavity.png 388w, https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2024\/11\/cavity-287x300.png 287w\" sizes=\"auto, (max-width: 388px) 100vw, 388px\" \/>\n                      <div class=\"h-image__frame h-hide-lg h-hide-md h-hide-sm style-1249-frameImage style-local-706-c20-frameImage\"><\/div>\n                    <\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1250-outer style-local-706-c21-outer\">\n            <div data-colibri-id=\"706-c21\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-1 h-px-md-1 h-px-1 v-inner-lg-1 v-inner-md-1 v-inner-1 style-1250 style-local-706-c21 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c22\" class=\"d-block style-1251 style-local-706-c22 position-relative h-element\">\n                  <!---->\n                  <div class=\"h-image__frame-container-outer\">\n                    <div class=\"h-image__frame-container\">\n                      <!---->\n                      <!---->\n                      <img loading=\"lazy\" decoding=\"async\" width=\"680\" height=\"302\" src=\"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2024\/11\/cavity2.png\" class=\"wp-image-3307 style-1251-image style-local-706-c22-image\" alt=\"\" srcset=\"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2024\/11\/cavity2.png 680w, https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2024\/11\/cavity2-300x133.png 300w\" sizes=\"auto, (max-width: 680px) 100vw, 680px\" \/>\n                      <div class=\"h-image__frame h-hide-lg h-hide-md h-hide-sm style-1251-frameImage style-local-706-c22-frameImage\"><\/div>\n                    <\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1252-outer style-local-706-c23-outer\">\n            <div data-colibri-id=\"706-c23\" class=\"d-flex h-flex-basis h-column__inner h-ui-empty-state-container h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-1252 style-local-706-c23 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100\">\n                <!---->\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"706-c24\" class=\"h-row-container gutters-row-lg-1 gutters-row-md-1 gutters-row-0 gutters-row-v-lg-1 gutters-row-v-md-1 gutters-row-v-1 style-1253 style-local-706-c24 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-1 gutters-col-md-1 gutters-col-0 gutters-col-v-lg-1 gutters-col-v-md-1 gutters-col-v-1\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1254-outer style-local-706-c25-outer\">\n            <div data-colibri-id=\"706-c25\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-1 h-px-md-1 h-px-1 v-inner-lg-1 v-inner-md-1 v-inner-1 style-1254 style-local-706-c25 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c26\" class=\"d-block style-1255 style-local-706-c26 position-relative h-element\">\n                  <!---->\n                  <div class=\"h-image__frame-container-outer\">\n                    <div class=\"h-image__frame-container\">\n                      <!---->\n                      <!---->\n                      <img loading=\"lazy\" decoding=\"async\" width=\"671\" height=\"250\" src=\"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2024\/11\/carangiform.png\" class=\"wp-image-3322 style-1255-image style-local-706-c26-image\" alt=\"\" srcset=\"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2024\/11\/carangiform.png 671w, https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2024\/11\/carangiform-300x112.png 300w\" sizes=\"auto, (max-width: 671px) 100vw, 671px\" \/>\n                      <div class=\"h-image__frame h-hide-lg h-hide-md h-hide-sm style-1255-frameImage style-local-706-c26-frameImage\"><\/div>\n                    <\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1256-outer style-local-706-c27-outer\">\n            <div data-colibri-id=\"706-c27\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-1 h-px-md-1 h-px-1 v-inner-lg-1 v-inner-md-1 v-inner-1 style-1256 style-local-706-c27 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c28\" class=\"d-block style-1258 style-local-706-c28 position-relative h-element\">\n                  <!---->\n                  <div class=\"h-image__frame-container-outer\">\n                    <div class=\"h-image__frame-container\">\n                      <!---->\n                      <!---->\n                      <img loading=\"lazy\" decoding=\"async\" width=\"671\" height=\"290\" src=\"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2024\/11\/carangiform02.png\" class=\"wp-image-3323 style-1258-image style-local-706-c28-image\" alt=\"\" srcset=\"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2024\/11\/carangiform02.png 671w, https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2024\/11\/carangiform02-300x130.png 300w\" sizes=\"auto, (max-width: 671px) 100vw, 671px\" \/>\n                      <div class=\"h-image__frame h-hide-lg h-hide-md h-hide-sm style-1258-frameImage style-local-706-c28-frameImage\"><\/div>\n                    <\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1257-outer style-local-706-c29-outer\">\n            <div data-colibri-id=\"706-c29\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-1 h-px-md-1 h-px-1 v-inner-lg-1 v-inner-md-1 v-inner-1 style-1257 style-local-706-c29 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c30\" class=\"h-text h-text-component style-1259 style-local-706-c30 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"\">\n                    <p>Carangiform with roll motion:<\/p>\n                    <p>The amplitude of the body side (y) increases quadratically towards to the tail (x).&nbsp;<\/p>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"706-c31\" class=\"h-row-container gutters-row-lg-2 gutters-row-md-2 gutters-row-0 gutters-row-v-lg-2 gutters-row-v-md-2 gutters-row-v-2 style-1340 style-local-706-c31 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-2 gutters-col-md-2 gutters-col-0 gutters-col-v-lg-2 gutters-col-v-md-2 gutters-col-v-2\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1341-outer style-local-706-c32-outer\">\n            <div data-colibri-id=\"706-c32\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-1341 style-local-706-c32 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c33\" class=\"h-text h-text-component style-1240 style-local-706-c33 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"\">\n                    <h6>Ground Effect by Pelvic Fin (by Takazawa, 2025):&nbsp;<\/h6>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"706-c34\" class=\"h-row-container gutters-row-lg-0 gutters-row-md-0 gutters-row-0 gutters-row-v-lg-0 gutters-row-v-md-0 gutters-row-v-0 style-1337 style-local-706-c34 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-0 gutters-col-md-0 gutters-col-0 gutters-col-v-lg-0 gutters-col-v-md-0 gutters-col-v-0\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1338-outer style-local-706-c35-outer\">\n            <div data-colibri-id=\"706-c35\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-1 h-px-md-1 h-px-1 v-inner-lg-1 v-inner-md-1 v-inner-1 style-1338 style-local-706-c35 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c36\" class=\"d-block style-1344 style-local-706-c36 position-relative h-element\">\n                  <!---->\n                  <div class=\"h-image__frame-container-outer\">\n                    <div class=\"h-image__frame-container\">\n                      <!---->\n                      <!---->\n                      <img loading=\"lazy\" decoding=\"async\" width=\"831\" height=\"612\" src=\"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2025\/08\/flyingfish02.png\" class=\"wp-image-3891 style-1344-image style-local-706-c36-image\" alt=\"\" \/>\n                      <div class=\"h-image__frame h-hide-lg h-hide-md h-hide-sm style-1344-frameImage style-local-706-c36-frameImage\"><\/div>\n                    <\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1339-outer style-local-706-c37-outer\">\n            <div data-colibri-id=\"706-c37\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-1 h-px-md-1 h-px-1 v-inner-lg-1 v-inner-md-1 v-inner-1 style-1339 style-local-706-c37 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c38\" class=\"d-block style-1345 style-local-706-c38 position-relative h-element\">\n                  <!---->\n                  <div class=\"h-image__frame-container-outer\">\n                    <div class=\"h-image__frame-container\">\n                      <!---->\n                      <!---->\n                      <img loading=\"lazy\" decoding=\"async\" width=\"833\" height=\"604\" src=\"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2025\/08\/flyingfish00.png\" class=\"wp-image-3889 style-1345-image style-local-706-c38-image\" alt=\"\" \/>\n                      <div class=\"h-image__frame h-hide-lg h-hide-md h-hide-sm style-1345-frameImage style-local-706-c38-frameImage\"><\/div>\n                    <\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"706-c39\" class=\"h-row-container gutters-row-lg-0 gutters-row-md-0 gutters-row-0 gutters-row-v-lg-0 gutters-row-v-md-0 gutters-row-v-0 style-1347 style-local-706-c39 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-0 gutters-col-md-0 gutters-col-0 gutters-col-v-lg-0 gutters-col-v-md-0 gutters-col-v-0\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1348-outer style-local-706-c40-outer\">\n            <div data-colibri-id=\"706-c40\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-1 h-px-md-1 h-px-1 v-inner-lg-1 v-inner-md-1 v-inner-1 style-1348 style-local-706-c40 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c41\" class=\"d-block style-1350 style-local-706-c41 position-relative h-element\">\n                  <!---->\n                  <div class=\"h-image__frame-container-outer\">\n                    <div class=\"h-image__frame-container\">\n                      <!---->\n                      <!---->\n                      <img loading=\"lazy\" decoding=\"async\" width=\"835\" height=\"616\" src=\"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-content\/uploads\/2025\/08\/flyingfish01.png\" class=\"wp-image-3890 style-1350-image style-local-706-c41-image\" alt=\"\" \/>\n                      <div class=\"h-image__frame h-hide-lg h-hide-md h-hide-sm style-1350-frameImage style-local-706-c41-frameImage\"><\/div>\n                    <\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1349-outer style-local-706-c42-outer\">\n            <div data-colibri-id=\"706-c42\" class=\"d-flex h-flex-basis h-column__inner h-ui-empty-state-container h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-1349 style-local-706-c42 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100\">\n                <!---->\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"706-c43\" class=\"h-row-container gutters-row-lg-2 gutters-row-md-2 gutters-row-0 gutters-row-v-lg-2 gutters-row-v-md-2 gutters-row-v-2 style-1241 style-local-706-c43 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-2 gutters-col-md-2 gutters-col-0 gutters-col-v-lg-2 gutters-col-v-md-2 gutters-col-v-2\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1242-outer style-local-706-c44-outer\">\n            <div data-colibri-id=\"706-c44\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-1242 style-local-706-c44 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c45\" class=\"h-text h-text-component style-1243 style-local-706-c45 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"\">\n                    <h6>Jump on water:<\/h6>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"706-c46\" class=\"h-row-container gutters-row-lg-1 gutters-row-md-1 gutters-row-0 gutters-row-v-lg-1 gutters-row-v-md-1 gutters-row-v-1 style-437 style-local-706-c46 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-1 gutters-col-md-1 gutters-col-0 gutters-col-v-lg-1 gutters-col-v-md-1 gutters-col-v-1\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-438-outer style-local-706-c47-outer\">\n            <div data-colibri-id=\"706-c47\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-1 h-px-md-1 h-px-1 v-inner-lg-1 v-inner-md-1 v-inner-1 style-438 style-local-706-c47 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-component=\"video\" data-colibri-id=\"706-c48\" class=\"d-block h-video d-block h-video style-439 style-local-706-c48 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"video-container position-relative\">\n                    <div class=\"h-global-transition-all ratio-inner\"><iframe src=https:\/\/www.youtube.com\/embed\/Q7IhOt1hMWQ?autoplay=0&#038;mute=0&#038;modestbranding=0&#038;rel=0&#038;enablejsapi=1&#038; class='h-video-main'  allowfullscreen><\/iframe><\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-441-outer style-local-706-c50-outer\">\n            <div data-colibri-id=\"706-c50\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-441 style-local-706-c50 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c51\" class=\"h-text h-text-component style-673 style-local-706-c51 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"\">\n                    <p>Jump from the water surface by FSI simulation:<\/p>\n                    <p>Model: multibody with 12 rigid bodies, body length of 20 cm,&nbsp;<\/p>\n                    <p>Motion: Carangiform with 20Hz<\/p>\n                    <p><span style=\"font-weight: 400; font-size: 16px; font-family: &quot;Open Sans&quot;; color: rgb(70, 112, 127);\">CFD: openFOAM, VOF, overset mesh, moving boundary condition<\/span><\/p>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"706-c52\" class=\"h-row-container gutters-row-lg-2 gutters-row-md-2 gutters-row-0 gutters-row-v-lg-2 gutters-row-v-md-2 gutters-row-v-2 style-1244 style-local-706-c52 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-2 gutters-col-md-2 gutters-col-0 gutters-col-v-lg-2 gutters-col-v-md-2 gutters-col-v-2\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1245-outer style-local-706-c53-outer\">\n            <div data-colibri-id=\"706-c53\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-1245 style-local-706-c53 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c54\" class=\"h-text h-text-component style-1246 style-local-706-c54 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"\">\n                    <h6>Hardware:<\/h6>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"706-c55\" class=\"h-row-container gutters-row-lg-1 gutters-row-md-1 gutters-row-0 gutters-row-v-lg-1 gutters-row-v-md-1 gutters-row-v-1 style-445 style-local-706-c55 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-1 gutters-col-md-1 gutters-col-0 gutters-col-v-lg-1 gutters-col-v-md-1 gutters-col-v-1\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-446-outer style-local-706-c56-outer\">\n            <div data-colibri-id=\"706-c56\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-1 h-px-md-1 h-px-1 v-inner-lg-1 v-inner-md-1 v-inner-1 style-446 style-local-706-c56 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-component=\"video\" data-colibri-id=\"706-c57\" class=\"d-block h-video d-block h-video style-447 style-local-706-c57 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"video-container position-relative\">\n                    <div class=\"h-global-transition-all ratio-inner\"><iframe src=https:\/\/www.youtube.com\/embed\/abmFzQ5ND9E?autoplay=0&#038;mute=0&#038;modestbranding=0&#038;rel=0&#038;enablejsapi=1&#038; class='h-video-main'  allowfullscreen><\/iframe><\/div>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-449-outer style-local-706-c59-outer\">\n            <div data-colibri-id=\"706-c59\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-449 style-local-706-c59 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c60\" class=\"h-text h-text-component style-674 style-local-706-c60 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"\">\n                    <p>Swim by Miyamoto model (2018):<\/p>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n      <div data-colibri-id=\"706-c61\" class=\"h-row-container gutters-row-lg-2 gutters-row-md-2 gutters-row-0 gutters-row-v-lg-2 gutters-row-v-md-2 gutters-row-v-2 style-1260 style-local-706-c61 position-relative\">\n        <!---->\n        <div class=\"h-row justify-content-lg-center justify-content-md-center justify-content-center align-items-lg-stretch align-items-md-stretch align-items-stretch gutters-col-lg-2 gutters-col-md-2 gutters-col-0 gutters-col-v-lg-2 gutters-col-v-md-2 gutters-col-v-2\">\n          <!---->\n          <div class=\"h-column h-column-container d-flex h-col-lg-auto h-col-md-auto h-col-auto style-1261-outer style-local-706-c62-outer\">\n            <div data-colibri-id=\"706-c62\" class=\"d-flex h-flex-basis h-column__inner h-px-lg-2 h-px-md-2 h-px-2 v-inner-lg-2 v-inner-md-2 v-inner-2 style-1261 style-local-706-c62 position-relative\">\n              <!---->\n              <!---->\n              <div class=\"w-100 h-y-container h-column__content h-column__v-align flex-basis-100 align-self-lg-start align-self-md-start align-self-start\">\n                <!---->\n                <div data-colibri-id=\"706-c63\" class=\"h-text h-text-component style-1262 style-local-706-c63 position-relative h-element\">\n                  <!---->\n                  <!---->\n                  <div class=\"\">\n                    <h6>References:<\/h6>\n                    <p>. Isamu NAKAJIMA and Koki KIKUCHI, Taxiing Simulation of a Flying Fish using a Digital 3D Biological Specimen, JSDE, 2023, (in Japanese).<\/p>\n                    <p>. Takumi TAKAZAWA, Isamu NAKAJIMA, Kenta TSUKINO, Hideya REIZEN and Koki KIKUCHI, A study on an Aerial\/Aquatic Locomotion Robot Based on Flying Fish (Aerodynamic Performance of Gliding with Pelvic Fins near the Water Surface), JSDE,\n                      The 6th International Conference on Design Engineering and Science: ICDES2025, (Aug. 2025), Alexandria Egypt.<\/p>\n                  <\/div>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>We are developing an aerial\/aquatic robot as an alternative of a common drone with rotary wings. While a multi [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":522,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-templates\/full-width-page.php","meta":{"footnotes":""},"class_list":["post-706","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-json\/wp\/v2\/pages\/706","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-json\/wp\/v2\/comments?post=706"}],"version-history":[{"count":20,"href":"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-json\/wp\/v2\/pages\/706\/revisions"}],"predecessor-version":[{"id":4098,"href":"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-json\/wp\/v2\/pages\/706\/revisions\/4098"}],"up":[{"embeddable":true,"href":"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-json\/wp\/v2\/pages\/522"}],"wp:attachment":[{"href":"https:\/\/www.kikulab.chibatech.ac.jp\/Eng\/wp-json\/wp\/v2\/media?parent=706"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}