Curise Missile Technology Presentation 5s5k3t

Cruise Missiles And Its Technology

Submitted To: Mr. Satyesh kr. Jha Mechanical Dept.

Submitted by: Sunny S. Sharma B.Tech 8th Sem.

What is Missile? • The word missile comes from the Latin word “mittere”, meaning "to send". • A missile is a self-propelled precision-guided munition system, as opposed to an unguided self-propelled munitions, referred to as a rocket .

Classifications of Missiles Missiles are generally classified as follows • On the basis of Type: 1. Cruise Missile 2. Ballistic Missile • On the basis of Range: 1. Short Range Missile 2. Medium Range Missile 3. Intermediate Range Ballistic Missile 4. Intercontinental Ballistic Missile

On the basis of Launch mode: • • • • • • • •

Surface-to-Surface Missile Surface-to-Air Missile Surface (Coast)-to-Sea Missile Air-to-Air Missile Air-to-Surface Missile Sea-to-Sea Missile Sea-to-Surface (Coast) Missile Anti-Tank Missile

Introduction • A cruise missile is basically a small, pilotless airplane. Cruise missiles have an 8.5-foot (2.61-meter) wingspan, are powered by turbofan engines and can fly 500 to 1,000 miles (805 to 1,610 km) depending on the configuration. A cruise missile's job in life is to deliver a 1,000-pound (450-kg) high-explosive bomb to a precise location -- the target.

missile

Tomahawk Cruise

General design

Guidance systems • The purpose of a guidance system is to direct the missile to target . • Guidance systems vary greatly. • Use of an Automatic Target Recognition (ATR) algorithm/device in the guidance system increases accuracy of the missile.

Types of guidance systems • Inertial navigation system • TERCOM (Terrain Contour Matching) • DSMAC (Digital Scene-Mapping Area Correlator) • Satellite navigation

Inertial navigation system • An inertial navigation system includes at least a computer and a platform containing accelerometers, gyroscopes, or other motion-sensing devices. • Accelerometers measure the vertical, lateral, and longitudinal accelerations of the controlled missile . • Gyroscopes measure the angular velocity of the system.

• Inertial navigation system

TerCom(Terrain contour matching) • It uses a pre-recorded contour map of the terrain that is compared to measurements made during flight by an onboard radar altimeter. • The missile's radar altimeter feeds measurements into a smaller buffer, and averages them out to produce a single measurement. • The series of such numbers a strip of measurements similar to those held in the maps. The two are compared to overlay the strip on the known map, and the positioning of the strip within the map produces a location and direction.

• The guidance system then uses this information to correct the flight path of the missile.

DSMAC(Digital scene-mapping area correlator): • A series of photographs are taken from surveillance aircraft and are put into a carousel in the missile. • Another camera takes pictures out of the bottom of the missile. • A computer compares the two images and attempts to line up areas of high contrast. • This system is very slow and its role is being taken up by TERCOM.

Satellite navigation • Another way to navigate a cruise missile is by using a satellite positioning system, such as GPS . • Satellite navigation systems are precise and cheap. • If the satellites are interfered with (e.g. destroyed) or if the satellite signal is interfered with (e.g. jammed), the satellite navigation system becomes inoperable. • The GPS-based navigation is useful in a conflict with a technologically unsophisticated adversary.

Advantages of Cruise missile • The big advantage of the cruise missile is its smallness and cost. • Its small size also improved the weapon’s chances of penetration. • The map matching system (TERCOM) is combined with an inertial navigational system in a system called TAINS. This not only gets the cruise to its target but also with an accuracy.

Conclusions • Currently cruise missiles are among the most expensive of single-use weapons, up to several million dollars apiece. However, they are cheaper than human pilots when total training and infrastructure costs are taken into . • Guidance System used in cruise missile is a complex system which involves several systems working in tandem. it is essential that guidance system is properly designed for accurate interception of targets.

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