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M734 Section
The M734 multi-option fuzeTM 43-0001-28 "Army Ammunition Data Sheets,"Department of the Army, April 1977, p7-45. is a rangefinder and collision detection system used on 60mm, 81mm, and 120mm mortar shells as a trigger to detonate the shells at the most damaging heights of burst when combating four types of battlefield threats: :* The rangefinder is a Doppler radar using FMCWTamatsu et al., "FM-CW Radar System," US Patent Serial No. 5,619,208, April 8, 1987 , ''Theory of FM-CW Radar''. technology to emit a radar signal and can be set to trigger two types of air-bursts, one being a near surface burst to combat standing targets and the other being a higher proximity burst downward onto prone or dug-in targets.FM 7-90,"Tactical Employment of Mortars,"Department of the Army, 27 April 2005, Appendix B-3. :* The collision detection portion of the fuze consists of two mechanical devices, one being a quick response electric inertial switch for a burst upon impact with a target, such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M734 Section
The M734 multi-option fuzeTM 43-0001-28 "Army Ammunition Data Sheets,"Department of the Army, April 1977, p7-45. is a rangefinder and collision detection system used on 60mm, 81mm, and 120mm mortar shells as a trigger to detonate the shells at the most damaging heights of burst when combating four types of battlefield threats: :* The rangefinder is a Doppler radar using FMCWTamatsu et al., "FM-CW Radar System," US Patent Serial No. 5,619,208, April 8, 1987 , ''Theory of FM-CW Radar''. technology to emit a radar signal and can be set to trigger two types of air-bursts, one being a near surface burst to combat standing targets and the other being a higher proximity burst downward onto prone or dug-in targets.FM 7-90,"Tactical Employment of Mortars,"Department of the Army, 27 April 2005, Appendix B-3. :* The collision detection portion of the fuze consists of two mechanical devices, one being a quick response electric inertial switch for a burst upon impact with a target, such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M734 Impeller
The M734 multi-option fuzeTM 43-0001-28 "Army Ammunition Data Sheets,"Department of the Army, April 1977, p7-45. is a rangefinder and collision detection system used on 60mm, 81mm, and 120mm mortar shells as a trigger to detonate the shells at the most damaging heights of burst when combating four types of battlefield threats: :* The rangefinder is a Doppler radar using FMCWTamatsu et al., "FM-CW Radar System," US Patent Serial No. 5,619,208, April 8, 1987 , ''Theory of FM-CW Radar''. technology to emit a radar signal and can be set to trigger two types of air-bursts, one being a near surface burst to combat standing targets and the other being a higher proximity burst downward onto prone or dug-in targets.FM 7-90,"Tactical Employment of Mortars,"Department of the Army, 27 April 2005, Appendix B-3. :* The collision detection portion of the fuze consists of two mechanical devices, one being a quick response electric inertial switch for a burst upon impact with a target, such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobilization
Mobilization is the act of assembling and readying military troops and supplies for war. The word ''mobilization'' was first used in a military context in the 1850s to describe the preparation of the Prussian Army. Mobilization theories and tactics have continuously changed since then. The opposite of mobilization is demobilization. Mobilization became an issue with the introduction of conscription, and the introduction of the railways in the 19th century. Mobilization institutionalized the mass levy of conscripts that was first introduced during the French Revolution. A number of technological and societal changes promoted the move towards a more organized way of deployment. These included the telegraph to provide rapid communication, the railways to provide rapid movement and concentration of troops, and conscription to provide a trained reserve of soldiers in case of war. History Roman Republic The Roman Republic was able to mobilize at various times between 6% (81–8 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ARDEC
The United States Army Combat Capabilities Development Command Armaments Center (CCDCAC), or Armaments Center, headquartered at Picatinny Arsenal in New Jersey, is the US Army's primary research and development arm for armaments and munitions. Besides its Picatinny headquarters, the Armaments Center has three other research facilities, including Benét Laboratories. The Armaments Center works to develop more advanced weapons using technologies such as microwaves, lasers and nanotechnology. The Armaments Center was established in February 2019, when it was aligned with the United States Army Futures Command along with its senior organization, the United States Army Combat Capabilities Development Command. Armaments Center was called the U.S. Army Armament Research Development and Engineering Center (ARDEC). The Armaments Center is the R&D center for armaments used by the U.S. Army, United States Special Operations Command (SOCOM), and other U.S. military organizations. It is on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harry Diamond Laboratories
The Harry Diamond Laboratories (HDL) was a research facility of the Ordnance Development Division of the National Bureau of Standards and later the US Army, most notable for its work on proximity fuzes in World War II. The organization was founded in 1940, but was not named after its first director Harry Diamond until 1962. HDL was one of seven Army laboratories merged to form the new Army Research Laboratory in 1992. History In 1940, concerned about increasing warfare abroad, the National Defense Research Committee organized a group of scientists and engineers into the Ordnance Development Division of the National Bureau of Standards (NBS), to develop fuzes for non-rotating (fin-stabilized) munitions such as bombs, rockets and mortar shells. Harry Diamond, a pioneer radio engineer, was given technical direction of the program, a position he held until his death in 1948. Proximity fuzes were first used in combat in January 1943, and the U.S. War Department later described the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soldiers Firing A M120 120mm Mortar (Iraq)
A soldier is a person who is a member of an army. A soldier can be a conscripted or volunteer enlisted person, a non-commissioned officer, or an officer. Etymology The word ''soldier'' derives from the Middle English word , from Old French or , meaning mercenary, from , meaning shilling's worth or wage, from or , shilling. The word is also related to the Medieval Latin , meaning soldier (literally, "one having pay"). These words ultimately derive from the Late Latin word , referring to an Ancient Roman coin used in the Byzantine Empire. Occupational designations In most armies use of the word "soldier" has taken on a more general meaning due to the increasing specialization of military occupations that require different areas of knowledge and skill-sets. As a result, "soldiers" are referred to by names or ranks which reflect an individual's military occupation specialty arm, service, or branch of military employment, their type of unit, or operational employment or technica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A01-021A
A, or a, is the first letter and the first vowel of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''a'' (pronounced ), plural ''aes''. It is similar in shape to the Ancient Greek letter alpha, from which it derives. The uppercase version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar. The lowercase version can be written in two forms: the double-storey a and single-storey ɑ. The latter is commonly used in handwriting and fonts based on it, especially fonts intended to be read by children, and is also found in italic type. In English grammar, " a", and its variant " an", are indefinite articles. History The earliest certain ancestor of "A" is aleph (also written 'aleph), the first letter of the Phoenician alphabet, which consisted entirely of consonants (for that reason, it is also called an abjad to distinguish it fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alternator
An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current. For reasons of cost and simplicity, most alternators use a rotating magnetic field with a stationary armature.Gordon R. Selmon, ''Magnetoelectric Devices'', John Wiley and Sons, 1966 no ISBN pp. 391-393 Occasionally, a linear alternator or a rotating armature with a stationary magnetic field is used. In principle, any AC electrical generator can be called an alternator, but usually the term refers to small rotating machines driven by automotive and other internal combustion engines. An alternator that uses a permanent magnet for its magnetic field is called a magneto. Alternators in power stations driven by steam turbines are called turbo-alternators. Large 50 or 60 Hz three-phase alternators in power plants generate most of the world's electric power, which is distributed by electric power grids. History Alternating current generating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Choked Flow
Choked flow is a compressible flow effect. The parameter that becomes "choked" or "limited" is the fluid velocity. Choked flow is a fluid dynamic condition associated with the venturi effect. When a flowing fluid at a given pressure and temperature passes through a constriction (such as the throat of a convergent-divergent nozzle or a valve in a pipe) into a lower pressure environment the fluid velocity increases. At initially subsonic upstream conditions, the conservation of energy principle requires the fluid velocity to increase as it flows through the smaller cross-sectional area of the constriction. At the same time, the venturi effect causes the static pressure, and therefore the density, to decrease at the constriction. Choked flow is a limiting condition where the mass flow will not increase with a further decrease in the downstream pressure environment for a fixed upstream pressure and temperature. For homogeneous fluids, the physical point at which the choking occurs f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venturi Tube
The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section (or choke) of a pipe. The Venturi effect is named after its discoverer, the 18th century Italian physicist, Giovanni Battista Venturi. Background In inviscid fluid dynamics, an incompressible fluid's velocity must ''increase'' as it passes through a constriction in accord with the principle of mass continuity, while its static pressure must ''decrease'' in accord with the principle of conservation of mechanical energy (Bernoulli's principle). Thus, any gain in kinetic energy a fluid may attain by its increased velocity through a constriction is balanced by a drop in pressure. By measuring pressure, the flow rate can be determined, as in various flow measurement devices such as Venturi meters, Venturi nozzles and orifice plates. Referring to the adjacent diagram, using Bernoulli's equation in the special case of steady, incompressible, inviscid flows (such as t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M734 Spin Governor
The M734 multi-option fuzeTM 43-0001-28 "Army Ammunition Data Sheets,"Department of the Army, April 1977, p7-45. is a rangefinder and collision detection system used on 60mm, 81mm, and 120mm mortar shells as a trigger to detonate the shells at the most damaging heights of burst when combating four types of battlefield threats: :* The rangefinder is a Doppler radar using FMCWTamatsu et al., "FM-CW Radar System," US Patent Serial No. 5,619,208, April 8, 1987 , ''Theory of FM-CW Radar''. technology to emit a radar signal and can be set to trigger two types of air-bursts, one being a near surface burst to combat standing targets and the other being a higher proximity burst downward onto prone or dug-in targets.FM 7-90,"Tactical Employment of Mortars,"Department of the Army, 27 April 2005, Appendix B-3. :* The collision detection portion of the fuze consists of two mechanical devices, one being a quick response electric inertial switch for a burst upon impact with a target, such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M734 Power System
The M734 multi-option fuzeTM 43-0001-28 "Army Ammunition Data Sheets,"Department of the Army, April 1977, p7-45. is a rangefinder and collision detection system used on 60mm, 81mm, and 120mm mortar shells as a trigger to detonate the shells at the most damaging heights of burst when combating four types of battlefield threats: :* The rangefinder is a Doppler radar using FMCWTamatsu et al., "FM-CW Radar System," US Patent Serial No. 5,619,208, April 8, 1987 , ''Theory of FM-CW Radar''. technology to emit a radar signal and can be set to trigger two types of air-bursts, one being a near surface burst to combat standing targets and the other being a higher proximity burst downward onto prone or dug-in targets.FM 7-90,"Tactical Employment of Mortars,"Department of the Army, 27 April 2005, Appendix B-3. :* The collision detection portion of the fuze consists of two mechanical devices, one being a quick response electric inertial switch for a burst upon impact with a target, such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
