Underwater mobile target

Abstract

Abstract An underwater mobile target that is relatively small and simple in operation. The target has an elongated stream lined body and is battery driven. The target employs a control system that includes elevator fins that are controlled by a pendulum that is responsive to the climb angle of the target. The fluid dynamic characteristics of the target, the center of buoyancy and center of gravity of the target combine with the pendulum controlled elevator fins to cause the target to have a predetermined positive climb angle when powered. A pressure control system is employed wherein the motor is turned on at a lower predetermined depth and turned off at an upper predetermined depth. When launched, the target free falls to the lower predetermined depth where the motor is activated and the target is then powered and maintains the positive climb angle until it reaches the upper predetermined depth where the motor is shut off and the target free falls until it reaches the lower predetermined depth where the motor is again activated. The process is then repeated and the target follows an approximate sawtooth depth trajectory and will present an evasive target to a tracking weapon. The target has an electronic simulation system that employs a sonar frequency transducer and a weapon frequency transducer. The sonar transducer will receive and transmit sonar signals whereas the weapon transducer will transmit only simulated weapon reflected signals.

Inventors

• 👤 Medford N Hogman
• 👤 James F Shedd
• 👤 Keith S Yett
• 👤 Harold A Kolve

Bibliographic Details