Japan Aerospace Exploration Agency

Teijin Chemicals Limited

Fuji Heavy Industries Ltd.

Iwasaki Tsushinki Kabushiki Kaisha

Tokyo Aircraft Instrument Co., Ltd.

Japan Tobacco Inc.

Makoto Ueno

Teruomi Nakaya

Hiroshi Wakai

Tetsuya Motoyoshi

Akira Koike

Masatoshi Ando

Masashi Shigemi

Toru Iwata

Tsunetaka Sakata

Akiko Nishijima

Tomonari Hirotani

Masaru Shinohara

It is an object of the present invention to provide an optical film which has reverse chromatic dispersibility that its retardation becomes smaller as the wavelength becomes shorter and a low photoelastic constant. The optical film is made of a polycarbonate copolymer containing a unit (A) represented by the following formula:  

Optical film

It is an object of the present invention to solve the problem of a drop in precision in conventional systems using a square pyramid type five-hole probe due to the drop in atmospheric pressure in high altitude ranges, and to provide a wide velocity range flight velocity vector measurement system that can prevent a drop in measurement precision. Furthermore, it is also an object of the present invention to provide a method for eliminating the effects of detection fluctuations caused by adhering water droplets, ice particles or dust in a wide velocity range flight velocity vector measurement system. The flight velocity vector measurement probe of the present invention comprises means in which a static pressure hole is formed in the tube wall surface of the probe, so that a static pressure value is obtained from the pressure detected by this static pressure hole, the Mach number M is calculated on the basis of an equation approximated by a fourth-order polynomial of the static pressure/total pressure signal and the angle of attack, and in cases where an abnormal detection value is detected, this is replaced by the preceding detection value.

High-altitude capable wide velocity range flight velocity vector measurement probe and measurement system

A facsimile connection system, which is provided with a plurality of facsimile terminal equipments having no CO line interface circuit, at least one facsimile signal processor having a CO line interface circuit, and an exchange for interconnecting the plurality of facsimile terminal equipments and the facsimile signal processor, so that the facsimile terminal equipments can use the facsimile signal processor in common to them. An additional information generator may be further provided in common to the facsimile terminal equipments so as to be connected to the exchange.

Facsimile connection system

Growing community of inventors

Tokyo, Japan

Makoto Ueno