31results about "Artificial horizons" patented technology

A process to control the trajectory of a spinning projectile. The projectile's accelerations are measured by means of an inertial unit in three axes within a reference linked to the projectile so as to prepare the piloting commands for the projectile's trajectory. The velocity vector V components (VX, VY, VZ) of the projectile are measured using a global positioning system (GPS) along three axes and within a land reference (GX, GY, GZ). Based on these measurements, the components (ΓX,ΓY,ΓZ) of the acceleration vector Γ are evaluated in the same land reference (GX, GY, GZ). At each of these measurements and periodical evaluations by the GPS, the Euler angles of the projectile are recalculated by combining the resultants of the velocity (V) and acceleration (Γ) measurements given by the GPS and those of the acceleration given by the inertial unit.

The invention relates to the field of horizontal line and grade line marking technology and discloses an intelligent adjustable laser horizontal line and grade line marking instrument and method. The intelligent adjustable laser horizontal line and grade line marking instrument is used for line marking of a reference object. The instrument comprises an underframe support, a middle frame support and a working disc, wherein center shafts at two sides of the working disc are arranged on the middle frame support through upper and lower rotary mechanisms, the middle frame support is mounted on the underframe support through left and right rotary mechanisms, working faces of a hexagonal disc body of the working disc are respectively provided with a horizontal line laser window emitting laser horizontal graticule and a vertical line laser window emitting laser vertical graticule, and a leveling display tube used for adjusting a horizontal line is arranged on a front surface of the working disc. According to the invention, horizontal lines of a surrounding circle and grade oblique lines of walls and stairs at side surfaces of a road can be marked at the same time, so the problems of datum of gradients of the walls and stairs at the side surfaces of the road and simultaneous operation can be overcome, thereby improving precision operation of the gradients of the walls and stairs at the side surfaces. The intelligent adjustable laser horizontal line and grade line marking instrument has the advantages of a simple structure, convenient operation and low manufacturing cost.

The invention relates to a leveling device (100) with a housing (110) having an upper part (120) on which a signal unit (150) for generating an optical signal (152) is arranged, wherein , the upper part (120) is rotatably configured relative to the lower part (130) connected to at least one support foot (132, 134, 136), and wherein the signal unit (150) is configured for self-levelling radiation of an optical signal (152 ), a floating ring (180) for sealing and radial clearance reduction is arranged between the lower part (130) and the upper part (120).