What is Tank: Definition and 733 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.

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  1. Esref AHMETOGLU

    HVAC Pressure tank bladder replacement

    How did you find PF?: by searching If I have an old 5000 lt pressure tank and as I see it needs a change of its membrane (Bludder) what is the recommendation that must be followed and also what is the volume ratio between the membrane before using and after testing or working situations
  2. G

    Acceleration of a tank leaking water

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  3. S

    Improving heat transfer in domestic hot water tank?

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  4. L

    Calculating flow rate when emptying liquid from a closed-top tank

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  5. Edm

    B Air tank PSI and cubic feet calculation help please

    If I have a air tank that is 1 cubic feet with the pressure gauge at 0 and I pump in air to 5000 psi how many cubic feet of a 100 psi would be in that tank? Any help would be appreciated
  6. C

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  7. S

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  8. G

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  9. M

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  10. S

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  11. J

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  12. T

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  13. imagine2014

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  14. D

    Will my fish tank stand hold the weight?

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  15. Distern

    I Collision when a falling tank impacts the surface of a lake

    I'm writing a paper on the movie realism of the A-team movie. The basic situation is that the guys are falling inside a tank with terminal velocity into a lake. I'm stumped on how to calculate the force that is created on impact, though I imagined it being done with some kind of pulse equation...
  16. Manshah

    Time to Empty a Tank with Water Flowing at 2h kg/s

    a tank is filled with water up to its brim a hole was made at the bottom of tank find time taken to empty tank if water flows at rate of 2h kg/s where h is height of liquid column and is equal to 20m radius is equal to h/2 [Moderator's note: moved from a technical forum.]
  17. A

    A Calculating the heat loss of an open water tank (aquarium)

    Hi, I have been calculating a series of hypothesis for some aquariums/tanks situations, using heat transfer equations (conduction, convection, radiation, evaporation) Typically we have aquariums that run at higher temperatures than the surroundings in winter and lower temperature than the...
  18. M

    Engineering Thermodynamics: Determine pressure in the tank of a manometer

    I was watching a YT video getting prepared for class this coming semester, and in the video, this diagram of a manometer was drawn (see image at end of message). The professor stated that the pressure in the tank (Pt) is = to the pressure at point A. Following this, he said that technically...
  19. S

    I Water Tank Overflow Air Piston concept/question

    I am trying to determine the minimum piston weight/force that would be required to push the air from the air tank into the top of the supply tank, filling up the supply tank and purging the discarded water thru the outlet supply pipe. We can assume no friction loss and sufficient air in the air...
  20. F

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  21. marcelo

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  22. C

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  23. Nauticale

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  24. Amir Sedieqy

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  25. T

    How to determine the tank volume and power requirement?

    Hello everyone. I have to determine the tank volume and power requirement of a tank. The teacher has done it the following way, however, I don't understand the process.
  26. A

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    I know that this should be a very simple problem, but I don't understand how to solve it without knowing the height at which the tank is separated from the rocket. I will be very grateful for any hint.
  27. H

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  28. S

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  29. S

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    Hi there, I'm doing a past exam paper Q and i'd like some help. Assumptions are: The velocity in the tank is negligible and the hydrostatic head is 4m. Pressure in the vessel: Gauge pressure 1 bar g = 10^5 Pa 0.2 bar g = 20,000 Pa Hydrostatic Pressure: (4)(9.81)(978) = 38,376.72 Pa Absolute...
  30. Chestermiller

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    I found this interesting thermodynamics problem on another site. I thought PF members might find it challenging to attack. I'm not asking for help since I've already solved it. So pease feel free to present your entire solution if you desire. Chet
  31. Jason-Li

    Comp Sci Seeking Guidance on Working Through Tank Problem with Multiple Tanks

    Hello all I come to again seeking guidance... There is another thread but he seems to have pulled formulas from somewhere other than our learning materials to reach the conclusions. Looking at this question and I can't figure out where to start really, the examples in out learning materials...
  32. seeker11

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    PROBLEM: A 120 gallon tank (26" diameter, 60" height) containing 40 Gallons of water is heated up until the tank ruptures from overpressure at 125 PSI (maximum tank rating). How to calculate the initial escaped steam velocity at the ruptured tank, assuming the gash is 2 feet long in the...
  33. cwill53

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  34. H

    Solving an Electrical Engineering Challenge with a Tank of Electrolyte Liquid

    So I am working on a project where I have a tank, which has a volume of electrolyte liquid inside it. This is coupled to a battery which charges it, and gives it energy. I will have a copperband arround it, so i can measure a potential voltage from the electrical field. So what I need to...
  35. E

    Solar radiation on a horizontal tank

    Hello everyone, I'm looking to estimate the variation of degassing on a horizontal tank of VC (vinyl chloride) due to solar radiation. The feed flow is continuous but the outlet is batch flow. So there is a lot of variation of liquid level in the tank (constant pressure). To avoid a lot of...
  36. emzy168

    Engineering SOS: Problem Solving Help - Tank Drainage

    Is it just 0? Confused with this question!
  37. S

    How much can a stainless steel tank rust inside?

    There is a lot of rusts in my water supply. I am suspecting the inside of my stainless steel pressure water tank is rusting. But can the stainless steel pressure tank rust inside? When i put magnet it doesn't stick to it. I plan to replace it with very expensive Aquaflow pressure tank because...
  38. jaychay

    Related rates calculus problem about a water tank

    Summary:: Consider the rectangular water tank, at the base the length is the same for 200 cm. There are 100 holes for water to come out which each hole have the same flow rate. Find the amount of water that come out in each hole by using differential when we know that there is an error in the...
  39. jaychay

    MHB Related rates calculus problem about water tank

    Consider the rectangular water tank, at the base the length is the same for 200 cm. There are 100 holes for water to come out which each hole have the same flow rate. Find the amount of water that come out in each hole by using differential when we know that there is an error in the measurement...
  40. K

    How does an LPG tank gauge work?

    Hi I have read that the propane gas tank gauges that rely on pressure are useless because as you use the tank part of the liquid propane turns to gas raising the pressure again inside the tank. What id like to know is then how do these gauges work? And also I would like more detail on how...
  41. B

    Simulate the temperature inside an aquarium tank

    there's a website to size an aquarium heater or chiller. This is just for learning purposes (not for fish) but I have modified these parameters from default to perform a load calculation on a 100 gallon glass tank... For the tank temperature range I set to be between 150-160 degree F. and a...
  42. siddharth23

    Air surge tank calculations

    I am going to be working on some calculations for an air surge tank to minimize fluctuations downstream of the tank in an engin'e intake syste, Any suggestions/sources where I could study for this? Thank you!
  43. A

    Hydrostatic Pressure in Freefalling Water Tank: Comparing Point A and B

    tank with water is pushed from construction into freefall, A is at 0.1m depth B is at 10m depth (so manometer will show aprox 1bar of hydrostartic pressure when tank is at rest on construction) from 0-5sec tank is accelrating,after 5sec tank is falling with constant speed..1)is hydrostatic...
  44. G

    Vacuum Tank Query (Aluminium, Carbon Fibre, etc, Composition)

    Hi, I'm hoping this will be a fairly easy question for someone on here to answer. If I wanted to make a (small?) vacuum tank (basically a hollow cylinder capped with two similarly hollow hemispheres - like so: (===)), how thick would the walls of the tank need to be for it to withstand the...
  45. M

    Water in a tank being driven up and down

    Hi PF! Suppose I have a square tank of water. If I drive the tank of water such that it's height as a function of time is ##h(t) = \cos(t)##, ignoring gravity, is this the same thing as saying the tank is holding still but the pressure field is changing as ##p(t)=\cos(t)##?
  46. Shubol3D

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  47. L

    Can Ultrasonic Sensors Accurately Measure Gas Tank Levels?

    Hi Folks, I am exploring using Ultrasonic for LGP tank level measurement. I went through lots of readings, in particular use of SRF02 sensor. But, It's not conclusive. Anyone has been exposed to solving such problem? If yes, kindly share return on your experience. Appreciate!
  48. V

    B Ripple Tank Refraction: Frequency Effect on Angle & Speed?

    Consider water waves refraction in a ripple tank. What happen if we increased the ripple frequency. I mean the refraction angle would change or not? Also, propagation speed will change or not? I had seen a photograph in PSSC Physics. According to that, the refraction angle was reducing if we...
  49. T

    Velocity equation for a cyclindrical tank and long pipe

    I was not really sure as to whether to ask this question here or the h/w forum as its something I am personally trying to understand. However, I shall let the admin decided. The question comes from a book called : . The specific question I have an issue with is not the question itself but the...
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