Missiles, trajectory

A BLEVE can produce fragments that fly away rapidly from the explosion source. These primary fragments, which are part of the original vessel wall, are hazardous and may result in damage to structures and injuries to people. Primary missile effects are determined by the number, shape, velocity, and trajectory of fragments. 

A further evasion measure specifically intended against ballistic-missile defenses is a low trajectory flight pattern for strategic missiles. This reduces the height and therefore the radar visibility of incoming warheads, thus complicating the defense s mission... 

AP composite propellants without aluminum particles are termed reduced-smoke propellants and are employed in tactical missiles to conceal their launch site and flight trajectory. No visible smoke is formed when the relative humidity of the atmosphere is less than about 40%. However, since high-frequency combustion oscillation tends to occur in the combustion chamber in the absence of solid particles that serve to absorb the oscillatory energy, a mass fraction of 0.01-0.05 of metallic particles is still required for the reduced-smoke propellants. These particles and/or their oxide particles generate thin smoke trails. The white smoke trail includes the white fog generated by the HCl molecules and the condensed water vapor of the humid atmosphere. 

Rocket. An unmanned self-propelled vehicle, with or without warhead, designed to travel above the surface of the earth and whose trajectory or course, while in flight, cannot be controlled. Excludes Guided Missiles and other vehicles whose trajectory or course, while in flight, can be controlled remotely (Ref 40a, p 122)... 

These fuzes, sometimes called "Posit" Buck Rogers" "Special" "Influence" and "Bonzo" are in effect "automatic time fuzes". Without "setting" or "adjustment" they detonate the missiles that carry them on approach to the target at the desired point on their trajectories, such as... 

As the missile proceeds along its trajectory — assumed to be low-angle fire — there is no tendency for it to depart therefrom, and the longitudinal axis will be restrained by aerodynamic forces to follow the trajectory... 

Classification, Missiles are commonly classified by their launch and target environments, as well as by popular names. Other methods of classifying guided missiles are by trajectory, speed (subsonic, sonic or supersonic), propulsion (air breathers, usually jets or rockets), guidance (command, Inertial or homing), payload (such as nuclear, high explosive, or electronic jammer), and purpose (strategic or tactical, offensive or defensive)... 

Modern missiles employ counter-counter measures. Their advanced seeker heads use two or more spectral bands in an attempt to distinguish between the flare and the target. Trajectory discrimination may also be used by some seeker heads. The physical size of the heat source is more important as imaging seekers that can discriminate a spot target of IR flares, have been developed. Depending on their application, IR decoy flares can be further classified into ... 

The ejecta or earth materials deposited on the desert surface around the crater consisted of large rock missiles on long trajectories, alluvium lifted and ejected in mass (bulk ejecta), and materials which remained airborne for longer times (missile ejecta). Fine particles remaining in the cloud were transported greater distances from the crater and constitute close-in and long range fallout. 

Booster Rocket. Any high-thrust unit or assembly that fires at take-off to get a missile(such as a rocket,bomb,shell) or an unmanned or manned aircraft, to which it is attached, started along its trajectory. Usually, a booster rocket produces a much greater thrust than the 2nd stage or sustained power plant of a rocket. Booster rockets are usually propelled by a solid propellant(such as in the Nike -Ajax missile) but liq proplnts are also used. The booster rocket should not be confused with ATO, JATO or RATO engines although there is a considerable similarity in design. A liquid-propelled booster rocket is used when the requirements are more extensive than normally available from solid-pro-... 

SOFAR bomb designed to be ejected from a missile near the end of its trajectory as a means of locating the point of impact (in w only) of the missile nose cone... 

Highly accurate trajectory information is required in the development of a missile system. One method of obtaining this information for a missile at high altitudes is to photograph the flash produced by a photoflash cartridge ejected a distance sufficient to prevent damage to the missile in flight. A device was developed which produces a series of flashes with a known time interval between them (Ref 3)... 

The re-entry vehicle carried by each missile is so designed that its speed and trajectory are corrected by four small vernier rockets before it separates from the burned-out second stage. 

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