Mitsubishi Heavy Industries Limited

Japan Aerospace Exploration Agency

Masaki Adachi

Hiroyuki Kobayashi

Katsuhiko Nakamura

Daiki Watanabe

Hideto Kawashima

Nobuki Negoro

Akihide Kurosu

Akira Ogawara

A three-dimensional additive manufactured product includes a body portion and a male screw portion integrally disposed on a surface of the body portion so as to protrude therefrom. The male screw portion includes a following side flank forming a first flank angle with respect to a vertical plane to an axis thereof. The first flank angle is not less than 45 degrees.

Three-dimensional additive manufactured product and three-dimensional additive manufacturing method

A cooling mechanism includes a bottom wall () in contact with a combustion chamber, an upper wall (), and a cooling passage () arranged between the bottom wall () and the upper wall (). The cooling passage () includes a first passage () extending to a first direction, a second passage () extending to the first direction, and a connection section () connected with the first passage () and the second passage (). The second passage () is arranged to have an offset to the first passage () in a second direction perpendicular to the first direction and along the bottom wall ().

Cooling mechanism of combustion chamber, rocket engine having cooling mechanism, and method of manufacturing cooling mechanism

Growing community of inventors

Tokyo, Japan

Masaki Adachi