Kawasaki Jukogyo Kabushiki Kaisha

Japan Defence Agency, Japanese Government

Technical Research and Development Institute, Japan Defense Agency

Japan Defence Agency

Yoshiyuki Niwa

Shunichi Bandoh

Hiroki Nishimura

Tadashi Wakatsuki

Asao Kakinuma

Masahiro Kashiwagi

Masahiro Yasue

Sumio Sako

Mikio Terashima

Ryutaro Yabe

A three-dimensional digital map prepared by an satellite or the like is stored in a first memory as a wide-area information. Narrow-area information obtained by a laser radar is stored in a second memory. Obstacle information on obstacles, such as high-voltage power lines, high buildings and cranes, is stored in a third memory. These three information are read out to generate virtual images on a see-through type display mounted on a helmet of a pilot so that the virtual images is superimposed on the actual field of vision.

Flight system and system for forming virtual images for aircraft

A bearingless hub structure for rotary-wing aircrafts comprising a hub body ecured to a rotor shaft, a plurality of radially extending flexbeams integrally formed with the hub body, and pitch housings enclosing each of the flexbeams in spaced relationship, the pitch housing having a radially outer end portion rigidly secured to an inboard end of a rotor blade and a radially inner end portion supported by a spherical bearing in the vicinity of a root end of said flexbeam. The flexbeam consists of a flexible element of low lead-lag stiffness and a torsion element of low torsional stiffness located radially outside the flexible element. The flexible element consists of two beam-like members having radially inner ends spaced in the lead-lag direction and extending radially outward with narrowing the distance between them, the beam-like member having radially outer end connected to a radially inner end of the torsion element.

Bearingless hub structure for rotary-wing aircrafts

Growing community of inventors

Tachikawa, Japan

Yoshiyuki Niwa