Duretek Inc.

Korea Advanced Institute of Science and Technology

Junkyu Kim

Hyungse Kim

Andrea Bianchi

Duck-Joo Lee

Jaemin Song

Jihwan An

Seungwoo Je

Young Min Jo

The present invention relates to a kinesthetic-feedback wearable apparatus which realizes a kinesthetic-feedback in a virtual reality (VR) or augmented reality (AR), and more particularly to a kinesthetic-feedback wearable apparatus which provides a resistance, which is suitable for a situation in a virtual reality or augmented reality, to a user by using a propeller in a state in which a virtual reality or augmented reality device is mounted to the user who uses the virtual reality or augmented reality device. According to the present invention, a reactive force for a kinesthetic-feedback can be easily realized through a scheme of attaching a light propeller to a wrist, and reactive forces of various directions may be realized only with a small number of propellers by allowing the directions and the RPMs of the propellers to be separately controlled for a higher degree of freedom when two or more propellers are provided.

Kinesthetic-feedback wearable apparatus for virtual reality and augmented reality and method for controlling the same

The present invention relates to a bullet with an increased effective range. The bullet includes a front end portion () having a hemispherical shape, a recess portion () connected to a rear end of the front end portion () and having a curved surface that is recessed inward, an inclined portion () connected to a rear end of the recess portion () and inclined at a predetermined angle (A) with respect to a horizontal line, a stepped portion () connected to a rear end of the inclined portion () and inclined at a predetermined angle (A') with respect to the horizontal line, and fluid inducing grooves formed from the rear to a rear end surface of the bullet (). Thus, when the bullet passes through underwater, super cavitation may be more effectively generated and maintained for even longer to significantly increase the effective range of the bullet.

Bullet with increased effective range

A method for constructing air-observed terrain data by using a rotary wing structure includes setting flight information including a photographing starting location and a photographing ending location on the basis of a flight route and a photographing location of the rotary wing structure; transmitting, to the rotary wing structure, the flight information so as to store the flight information in a flight control unit; capturing a ground image by a photographing unit of the rotary wing structure and storing the ground image in a storage unit when the rotary wing structure arrives at the photographing location; ending photographing and returning to the ground when the rotary wing structure arrives at the photographing ending location while repeatedly capturing a ground image; and constructing, by a computer in the control center, terrain data by using ground images stored in the storage unit.

Method for constructing air-observed terrain data by using rotary wing structure

Growing community of inventors

Daejeon, South Korea

Junkyu Kim