Missile

About: Missile is a research topic. Over the lifetime, 12829 publications have been published within this topic receiving 94307 citations. The topic is also known as: guided missile & missiles.

The development of radar homing missiles

Abstract: Introduction S World War II, guided missiles have played an increasingly important role in warfare. Earlier papers in this series' reviewed the development of the inertial guidance systems that made possible the accurate delivery of long-range ballistic (and other) missiles for which the target is a known set of Earth coordinates. These systems are not suitable for guidance of missiles against unpredictable targets such as maneuvering aircraft, which requires an ability to sense the target location in real time and respond to rapid changes. To accomplish this, modern air defense missiles use homing guidance, in which an on-board sensor provides the target data on which the guidance is based. Because of the continually improving quality of target information as the missile closes in, homing guidance provides an accuracy that is unmatched by any other form qf missile guidance. This paper is not a comprehensive history of its subject. Rather, it is a summary of the author's first-hand experience, covering the development of continuous wave (CW) radar homing guided missiles, which were pioneered at Raytheon Company. They form an impressive subset of all homing missiles, .with nearly 100,000 airand surface-launched versions produced to date and deployed in some two dozen countries worldwide. Derivatives of these designs form the backbone of the U.S. Navy's ship-based defenses and similar designs are extensively used by the Soviet Union. In reviewing the history, technical descriptions of problems encountered and solutions developed will be given for the three key areas of sensor, navigation, and flight control.

Dual spectral range target tracking seeker

Abstract: In a missile, a target tracking seeker responsive to a dual spectral range of radiation, having two decentered rotating optical elements to provide a rosette or spiral scanning pattern for a dual detector. Associated electronics operate upon the detector signals to guide the missile to its target.

Coning Motion of Spinning Missiles Induced by the Rate Loop

Abstract: Rate loops are commonly employed to compensate damping for missiles due to their great effectiveness. However, unexpected coning instability could be induced when the missile is subjected to spinning. The stability condition of coning motion as well as suitable design criteria for spinning missiles with rate loop feedback is established in this paper. Based on the theory of nutation movement, nonlinear equations of motion in terms of the nutation and precession angles are created. The mathematic model of the actuator acting on spinning missiles is also derived. After introducing the complex angle of attack into the system, the governing equations can be simplified to an analytically solvable second-order differential equation with respect to this variable. The proposed method is demonstrated by numerical simulations. It is also found that the upper limit of the critical gain in the damping loops' feedback for the stability decreases dramatically with a spinning missile. The dynamic inverse technique is employed as a remedy and it shows great effectiveness and applicability for the problem discussed in this paper.