GYROSCOPIC INSTRUMENT Russian patent published in 2003 - IPC

FIELD: gyroscopic instrumentation, control systems of antitank guided rockets and artillery guided missiles. SUBSTANCE: gyroscopic instrument has case, rotor in cardan suspension, spiral propelling spring installed in internal space of rotor, fixing arm made fast to outer end of spring. Fixing arm comes in the form of double-step cylinder placed with step of smaller diameter perpendicular to plane of spring. Side cylindrical surface of smaller diameter contacts beveled side of groove made in side surface of rim of rotor in the form of wedge in which distance between beveled side of groove and wall of space lying opposite diminishes towards direction of rotation of rotor. Least distance from beveled side of groove to wall of space opposite to it is less than that between side surface of spiral propelling spring contacting this wall and line of contact of fixing arm with beveled side of groove. Inner end of spiral propelling spring is releasably connected to bushing-shaped part of case. EFFECT: increased precision of instrument by reduced spread of moment of unbalance caused by position of center of masses of spring motor after acceleration of rotor. 2 dwg