What is Tank: Definition and 735 Discussions

A tank is an armored fighting vehicle intended as a primary offensive weapon in front-line ground combat. Tank designs are a balance of heavy firepower, strong armor, and good battlefield mobility provided by tracks and a powerful engine; usually their main armament is mounted in a turret. They are a mainstay of modern 20th and 21st century ground forces and a key part of combined arms combat.
Modern tanks are versatile mobile land weapons platforms whose main armament is a large-caliber tank gun mounted in a rotating gun turret, supplemented by machine guns or other ranged weapons such as anti-tank guided missiles or rocket launchers. They have heavy vehicle armor which provides protection for the crew, the vehicle's munition storage, fuel tank and propulsion systems. The use of tracks rather than wheels provides improved operational mobility which allows the tank to overcome rugged terrain and adverse conditions such as mud and ice/snow better than wheeled vehicles, and thus be more flexibly positioned at advantageous locations on the battlefield. These features enable the tank to perform well in a variety of intense combat situations, simultaneously both offensively (with direct fire from their powerful main gun) and defensively (as fire support and defilade for friendly troops due to the near invulnerability to common infantry small arms and good resistance against most heavier weapons), all while maintaining the mobility needed to exploit changing tactical situations. Fully integrating tanks into modern military forces spawned a new era of combat: armored warfare.

Until the arrival of the main battle tank, tanks were typically categorized either by weight class (light, medium, heavy or superheavy tanks) or doctrinal purpose (breakthrough-, cavalry-, infantry- or reconnaissance tanks). Some being larger and very heavily armored and with large guns, while others are smaller, lightly armored, and equipped with a smaller caliber and lighter gun. These smaller tanks move over terrain with speed and agility and can perform a reconnaissance role in addition to engaging enemy targets. The smaller, faster tank would not normally engage in battle with a larger, heavily armored tank, except during a surprise flanking manoeuvre.

View More On Wikipedia.org
  1. U

    Pressure and Weight in Water Tank

    Hi all, Can someone clarify whether the following is right? Assume a Cylindrical tank with a base area of 2000 sq.cm, is filled with water upto 15 metres ( tank starts from ground level) 1) The pressure at the bottom of tank will be 2.5 bar ( approx) i.e 1 bar pressure for every 10...
  2. M

    How Does Adding Nitrogen Affect Pressure in a Sealed Tank?

    Homework Statement [/b][/B] a Storage tank at STP contains 18,5kg of nitrogen (N2). a) What is the volume of the tank? b) What is the pressure if an additional 15.kg of nitrogen is added without changing the temperature. Homework Equations n= m/molar mass P= nRT/V The Attempt at...
  3. C

    Archived Filling an Empty Tank: Calculating Pressure & Temp

    Hi, A cylindrical object is reentering at a Mach number of say 25 at an altitude of 80 km. I like to calculate static pressure and static temperature inside the cylinder. Yes Obvious, normal shock will form. But the problem is a small orifice (say 20 cm ) is available in the cylinder, the...
  4. A

    Velocity and acceleration of an army tank

    Homework Statement An army tank on a mountainside fires its gun horizontally. The shell strikes the ground at a horizontal distance of 6000 m away from the tank. As the vertical component of the shell’s striking velocity is vy=200 m/s, how soon after it is fired does the shell strike the...
  5. H

    Tank depressurization through a valve

    Hello guys, I want to study the temperature evolution of a gas in a vessel from 200 bar to 20 bar. I made the assumption the expansion is isentropic. However I have some trouble to represent the heat exchange between the wall and the gas. I used the energy conservation (transfer from a...
  6. paulmdrdo1

    MHB Is my solution for the tank word problem correct?

    please check my work here 1. The larger of the two pipes can fill a tank in 40 min. and the smaller can fill it in 50 min. while the drain is opened. Find the time required for the drain to empty the full tank if the pipes are closed. Solution...
  7. M

    Energy Balance of Isothermal Energy Storage Tank

    Homework Statement Using unsteady state energy balances, discuss why storing cold water will be better in a larger tank rather than a smaller one. Assume the initial state where the tank is full. The Attempt at a Solution I've tried to make this an algebraic exercise where I created...
  8. B

    Determining Flow Velocity of Water in Collection Tank

    Homework Statement Water flows at the end of an aqueduct into the upper end of a 500m long pipe. The pipe has angle of 30 degrees to the horizontal and its low end exits into the bottom of a collection tank. The collection tank can hold a depth of 120m, above the centre line of the delivery...
  9. X

    Heat transfer rate from Mild steel bars to a chilled water tank issue

    Homework Statement Hi all, I am helping in designing a conveyor that takes freshly milled mild steel bars and submerges them in a tank of cooled water to reduce their temperature enough to to not damage the proceeding equipment. The tank of water will be connected to a separate...
  10. B

    How Much Friction Is Needed to Prevent Leakage in a Cubical Water Tank?

    Homework Statement A water tank is formed by sliding four identical cubical blocks together. All edges are watertight. Each block has mass M and is L meters on each side. You wish to fill the tank to its brim, i.e. to depth L. What is the minimum coefficient of static friction between the...
  11. B

    How Do You Calculate the Flow Rate from a Rectangular Opening in a Tank?

    Homework Statement A rectangular opening is cut into the side of a large open-topped water tank. The opening has width W and height H2 - H1, where H1 is the distance from the top of the tank to the top of the opening, and H2 is the distance from the top of the tank to the bottom of the...
  12. M

    Designing a Tank Circuit for a 512 Hz Locator in Sewer Camera Inspection

    I'm trying to help a Plummer friend out. I was once a pretty good Navy Tech with good component level trouble shooting skills, but that is long in the past and I have forgotten all of the math required to figure out even the most simple circuits. He has a sewer camera with a locator for it. He...
  13. M

    Work required to pump tank full of kerosene

    Homework Statement Right cylindrical tank measures 30ft high and 20ft in diameter. How much work is required to fill the tank with kerosene which has a weight of 51.2 pounds per cubic feet Homework Equations I know that W=Fxi and F=mg The Attempt at a Solution My professor did a...
  14. B

    Head pressure for liquid in a tank

    Did I answer this right ? An open tank contains liquid with a specific gravity of 1.735. If the height of the liquid is 10 feet, how much head pressure (in inches w.c. (water column)) will it exert? P= (10) (1.735)= 17.35 What is the pressure in PSI? P= (1.735)(0.433)(10feet)= 7.51255
  15. B

    Series parallel LC tank circuit Resonant Frequency equation?

    Hi How would I calculate a series-parallel LC circuit for resonance? I added up all the μH and pF for the equation, would that be correct? The inductors are in parallel, and the capacitors in series.
  16. paulmdrdo1

    MHB Emptying and filling a tank word problem.

    I just want to make a sanity check here. here's the problem One pipe can fill a tank 45min and another can fill it in 30 min. If these two pipes are open and a third pipe is draining water from the tank, it takes 27 min to fill the tank. how low will it take the third pipe alone to empty a...
  17. C

    Filling a Tank with Water: Solving for Time

    Homework Statement The water from a pipe flows into a tank of volume 180 m^3. If the tank is initially empty, how long will it take to fill the tank? I know that water is coming out of the pipe with a velocity of 22 m/s, and the diameter of this end of the pipe is 48 cm. Homework...
  18. K

    How can I model a two tank system to control fluid level in tank 2?

    Hello! I'm currently working on a project where i am supposed to model a two tank system. The only information the project gave me, was that i have to control the fluid level in tank 2 (what kind of fluid is up to me). I have tried to put the problem in a practical contex, where i have...
  19. MarkFL

    MHB Calculus II: Work Required to Pump Water from Hemispherical Tank

    Here is the question: I have posted a link there to this thread so the OP can view my work.
  20. gfd43tg

    What is the effect of initial conditions on steam filling a tank?

    Homework Statement A tank made of a material with negligible heat capacity is connected to a pipeline containing steam at 20 kPa and 250°C. Assume the tank is well insulated and that it has a volume of 1 m3. The tank is filled with steam until the pressure equilibrates, then it is disconnected...
  21. C

    Conical Tank Water Drainage: Finding Time to Empty with Differential Equations

    Homework Statement Water drains out of an inverted conical tank at a rate proportional to the depth (y) of water in the tank. Write a diff EQ as a function of time. This tank's water level has dropped from 16 feet deep to 9 feet deep in one hour. How long will it take before the tank is...
  22. MarkFL

    MHB Domenic's question at Yahoo Answers regarding computing the work to empty a tank

    Here is the question: I have posted a link there to this thread so the OP can view my work.
  23. C

    Water drains from a tank. Write a differential equation.

    2. Water drains out of an inverted conical tank at a rate proportional to the depth y of water in the tank. Write a differential equation for y as a function of time. My answer was dy/dt = ky. This was from a weekly homework set where there were only 5 problems. I feel like I am missing...
  24. B

    Finding min. value of dimensions for a tank of water

    Hello Homework Statement An open tank is constructed with a square base and vertical sides to hold 32m3 of water. Find dimensions of the tank if the area of the sheet metal used to make it is to have a minimum value. Homework Equations The Attempt at a Solution I'm not...
  25. W

    Fluid mechanics, Draining a cylindrical tank, some help

    For the problem attached, I solved it and found the answer for part b : 80.21 s How to get sure or know if the answer is right or not. Thanks
  26. H

    Heat transfer of a tank connected to Sterling Engine

    Have a new task, would appreciate some pointers. Conducting a heat transfer analysis on a tank with water coming in and out that's to serve as a hot side for a displacing stirling engine. If the inlet q dot into the tank is 1000W. Observing there will be losses due to conduction and...
  27. H

    Fill time to compress an air tank

    Hello friends, I'm trying to calculate the fill time to compress an air tank. I currently have the compressor's flow rate[CFM] at various pressures[PSI]. I honestly thought it was a trivial endeavor until I started gathering all the critical elements. So, there's obviously flow rate...
  28. B

    How can I calculate the weight of chocolate in a tank without a scale?

    First off Id like to say hello and I am glad I found this forum. Reading threw some of the threads, it sounds like we have a great group of people here. I am trying to come up with a way to calculate the amount of chocolate being held in the chocolate reserve tank at my place of employment...
  29. A

    Deducing Number of Molecules in a Scuba Tank

    Homework Statement A scuba tank has a volume of 2800cm3. For very deep dives, the tank is lled with 50% (by volume) pure oxygen (O2) and 50% pure helium (He). The molar mass of helium is 4 g mol/1, and for oxygen is 32 g mol/1. How many molecules are there of each type in the tank if it is...
  30. MacLaddy

    Thermodynamics- Charging an air tank

    Homework Statement A scuba diver's 2ft3 air tank is to be filled with air from a compressed air line at 120 psia and 100F. Initially, the air in this tank is at 20 psia and 70F. Presuming that the tank is well insulated, determine the temperature and mass in the tank when it is filled to 120...
  31. G

    Bottomless fish tank pressure brainteaser

    Link at the bottom if you do not know what I am talking about. Fish tank that works like pet watering bowl. If you poked a hole at the top air would go rush in. If you poked a hole at the bottom water would rush out. At what point in the tank would water be under so little pressure, the...
  32. E

    Calculating Work Required to Empty a Tank of Beer

    So a cousin has asked me for Calculus help, but my Calculus is rusty. She's in Calculus II (of a 3-semester sequence in the US) and is on Work. I decided to make up a problem for her, but I want to make sure I know what I'm doing. Homework Statement A cylindrical tank (16 feet high with a...
  33. L

    Why fire doesn't burn back to gas tank (stove and welding)

    Hi, Why the fire doesn't burn back to gas tank as there is a continuous stream of fuel from the fire to fuel tank? Thanks
  34. MarkFL

    MHB Find Rate Water is Pumped into Tank | NatyBaby's Question at Yahoo Answers

    Here is the question: I have posted a link there to this topic so the OP can see my work.
  35. H

    Compressed Air Tank: Temp & Condensation

    If I allow a tank that's pressurized(3000 psi) and initial temp (121) to cool to room temperature (25 C), will that increase the rate of condensation or is there a fixed amount of condensation that occurs while at that pressure? Having a tough time understanding that phenomenon. If no change in...
  36. maistral

    Process dynamics modelling for heated tank, differential equations

    I can't seem to model this properly. This isn't an assignment, I'm just curious how this will go, lol. So I have this tank with an incoming feed stream with temperature Ti, and an output stream T. It has a jacket where q would be modified depending on the desired output stream T. So I...
  37. E

    Solving a DE for Water Leaking from a Tank

    Homework Statement Suppose water is leaking from a tank through a circular hole of area Ah at its bottom. When water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second to c.Ah.(2gh)^.5 , where c (0 < c < 1)...
  38. R

    Pressure Rise in Closed Tank with 2 Inputs

    Supposing you had a cylindrical closed tank inside the body of a submarine; the top of the tank is at 200m depth. The tank has height 2.5m and internal volume 1.8m^3. A section of pipework is connected between the top surface of the submersible (level with the top of the tank) and to the...
  39. R

    Draining Closed Tank: Calculating Water Volume at 200m Depth

    Supposing you had a tank mounted to the outside of a submersible vehicle. The tank lid is left open, and the vessel that taken down to 200m sea water depth, to top of tank. The tank lid is now closed at this depth; it is assumed that the tank is completely full, with no air gap/bubble on...
  40. L

    Simple D.E mixing tank problem

    Hello, Having trouble with one quirk to this mixing tank problem: All large mixing tank initially holds 300 gallons of water, with 50 lbs of salt already in it (initial value problem). A brine solution of 2 lb/gal is pumped in at 3 gallons per minute. The water is pumped out at the faster...
  41. M

    Water flowing out of a conical tank

    For this problem, it reminds me of related rates problems, except I'm not given a constraint such as dr/dt = something at r = something. I tried using partial derivatives to solve it, but I'm not seeing a way to get rid of the r terms, or its derivative
  42. M

    Filling up a tank with a liquid that has an insoluble, inert gas insid

    Homework Statement Homework Equations The Attempt at a Solution The attempt at the solution has been attached, I'm up to part C on this though, so I haven't attempted d or f. I'll get to those as soon as part c is clear as well as A and B. I don't understand how doing a gas phase mass...
  43. O

    DE word problem: fluid in a tank

    Homework Statement Consider a tank used in certain hydrodynamic experiments. After one experiment the tank contains 200 L of a dye solution with a concentration of 1 g/L. To prepare for the next experiment, the tank is to be rinsed with fresh water flowing in at a rate of 2 L / min. The...
  44. alane1994

    MHB Finding Salt Concentration in a Tank with Limited Capacity

    A tank with a capacity of 500 gal originally contains 200 gal of water with 100 lb of salt in solution. Water containing 1lb of salt per gallon is entering at a rat of 3 gal/min, and the mixture is allowed to flow out of the tank at a rate of 2 gal/min. Find the amount of salt in the tank...
  45. T

    Internal energy when filling an evacuated tank

    This is the example 2.12 from "Introduction to Chemical Engineering Thermodynamics", 6th. ed, by Smith, Van Ness & Abbott: "An evacuated tank is filled with gas from a constant-pressure line. What is the relation between the enthalpy of the gas in the entrance line and the internal energy of...
  46. MarkFL

    MHB Find Work to Empty Conical Frustum Tank - Juan's Question at Yahoo Answers

    Here is the question: I have posted a link there to this topic so the OP can see my work.
  47. siddharth23

    Time required to fill a vacuum tank with water?

    I have a 6500 litre or 6.5 m^3 tank. A vacuum pump (40000 litres per minute) creates a 90 % vacuum inside the tank. The vacuum is used to suck in water. The climb the water has to make is 6m. How much time will it take to fill the tank, given that the pump is kept on all the while...
  48. D

    Fluids Problem - Atmospheric Tank Pressure Vent

    Homework Statement Theres a atmospheric tank with a goose neck vent on the top and also an inlet pipe [a diameter 2 inch schedule 40] on the top. There is a compressed air line [from a 50 psi compressor] going into the inlet. The pressure inside the tank should not be above 2 psi. Size the...
  49. A

    Tank flooding time for a compartment

    Hi can someone please help me I have been asked to calculate how long it would take to flood a compartment taking into account: Back pressure due to the air inside the tank being compressed. This will happen as the tank floods until the point when air pressure inside the tank is the same as...
  50. F

    Analyzing Tank Breakage at 10m: Calculating Pressure and Tension | Forum Post

    Hello people, This is my first forum post, so i hope I'm posting my problem in the right area. I have been looking trough books, internet and forum posts but i could not find anything helpful. Homework Statement A circular tank holds a liquid with a density of 13000 kg/m3. The tank has...
Back
Top