What is Tank: Definition and 734 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. W

    Potential Energy, Tank on Hill, water power generator downhill.

    Homework Statement Homework Equations KE=(0.5)mv^2 PE=mgh The Attempt at a Solution a.) The tanks volume is 20m^3. I then multiply that by the density to get the mass of the water, which is 20,000 kg. Apply that into PE=mgh for gravitational potention...
  2. M

    Engineering Why is the LC Oscillator Circuit Called a TANK Circuit?

    Why the LC oscillator ckt. is also known as a TANK ckt.?
  3. S

    Work needed to pump water out of spherical tank

    Homework Statement A spherical tank is full of water. If radius r = 3m and height h = 1.5m, find the work W required to pump the water out of the spout. (Use 9.8 for g and 3.14 \pi)Homework Equations Work is the integral from a to b of f(x)dx. The Attempt at a Solution Volume= area *...
  4. N

    Work required to fill a conical tank

    A right circular conical tank of height 3 feet and radius 1 foot at the top is filled with water to a height of 2 feet. Find the work required to pump all the water up and over the top of the tank. similar triangles : x=y/3 water 62.5 lb/ft^3 ?? am i setting this up right
  5. S

    [Thermodynamics I] Adding heat to a closed, rigid tank

    Homework Statement A closed, rigid tank contains 2kg of water initially at 80 degrees C and a quality of .6. Heat transfer occurs until the tank contains only saturated vapor at a higher pressure. Kinetic and potential energy effects are negligible. For the water as the system, determine...
  6. G

    When will the tank be half empty?

    Water leaks from a vertical cylindrical tank through a small hole in its base at a rate proportional to the square root of the volume remaining. The tank initially contains 175L and 15L leak out during the first day. When will the tank be half enpty? How much water will remain in the tank...
  7. G

    Ideal Gas Law and a helium tank

    Homework Statement Helium in a steel tank is at 250kPa, 300K with a volume of .1m^3. It is used to fill a balloon. When the pressure drops to 150kPa, the flow of helium stops by itself. If all the helium is still at 300k, how big balloon is produced? Homework Equations I used the ideal...
  8. D

    Tank Drainage Work Calculation

    Firstly, I'd like to quickly note that this isn't a homework problem, but rather a problem that I'm about to make up. I've done Calc IV already but recently my friend asked me for help on a problem involving the drainage of a tank and I got a little stuck in thought. I'd like to re-educate...
  9. M

    What are the dimensiosn of tank in meters

    Homework Statement A cubic tank holds 1,000.0 kg of water. What are the dimensiosn of tank i meters. Homework Equations n/a The Attempt at a Solution ok so its a cube therefore its six sides. do you use the lateral? ahh i am so lost... i am sorry the profesor gave us...
  10. M

    Pressure inside a tank of heavy water

    Homework Statement If the pressure inside a tank of heavy water is raised by 1 atmosphere, what happens to the tank? Homework Equations The Attempt at a Solution Not sure where to start.
  11. J

    Pressure in a certain tank is 55.8 Pa

    I am trying to figure if there is anything wrong with this statement. The pressure in a certain tank is 55.8 Pa (abs) 55.8 Pa is about .008 Psi...and the gage pressure would be -100.9 kpa... ...I wouldn't think this condition would be possible
  12. K

    Will heating a closed tank of water cause bubbles to form?

    If I heat up a tank with water while it is completely closed, will the water then form bubbles while it heats up above 100 °C? I know the pressure will increase so I think the bubbles won't form, but I'm not sure. But for the pressure to increase we need gas, so I would say that the gas...
  13. I

    How Does Q Factor Influence Gain in a Parallel LC Circuit?

    I would like to know somethings about the Q and its relation to gain in a parallel LC circuit. From what I know by tuning the Q to be high you can get a lot of gain at resonant frequency. Also to tune for Q the inductance has to be decreased and the capacitance has to be increased. Is this...
  14. G

    Designing a Solar Water Heater System for 4500 Gal Tank

    The problem is designing a solar water heater system to keep a 4500 gal tank of water at 140F during the day. The tank in question has the following properties: 5000gal Volume 4500gal water It loses about 1.8 degrees F/hr if not heated. I first need to figure out amount of energy...
  15. B

    Tank position problem based upon sound of fire

    Homework Statement An approaching tank fires at you and you hear the sound 3 seconds after the muzzle flash. Ten seconds later the same tank fires again and you hear the sound 2 seconds after the flash. The temperature is 100 degrees Celsius. How fast is the tank going? How long until he...
  16. I

    Building a Tank Circuit: Ground Connection Needed

    I'm building a tank circuit and I need to know if a ground connection is needed.
  17. U

    Pressure in a Rectangular Tank

    1. A rectangular tank 2.0 m by 2.0 m by 3.5 m high contains gasoline, with a density of 0.68E3 kg/m3, to a depth of 2.5 m. What is the gauge pressure anywhere 1.2 m below the surface of the gasoline? 2. P=Ps + Pl Pl=density (g) (h) 3. I'm sure this is an easy problem, but I...
  18. N

    Bernoulli's equation and a water tank

    Homework Statement A water tank of height h has a small hole at height y. The water is replenished to keep h from changing. The water squirting from the hole has range x. The range approaches zero as y goes to 0 because the water squirts right onto the table. The range also approaches zero as...
  19. 1

    Solving Force on Water Tank Bottom on Mars

    Homework Statement You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, where the acceleration due to gravity is 3.71 meters per second per second. The pressure at the surface of the water will be 145 kPa , and the depth of the water will be 14.2m...
  20. C

    Radiation from an ideal LC tank circuit

    Consider an ideal LC tank circuit with some initial conditions such that oscillations take place. I am trying to find the amount of power radiated per cycle due to the accelerating charges (I realize that this should come out to be a very small value). Setup and solve the relevant differential...
  21. S

    Calculating Work for Buried Gas Tank

    Homework Statement A cylindrical gasoline tank with radius 4ft and length 15 ft is buried under a service station. The top of the tank is 10ft underground. Find the amount of work needed to pump all the gasoline in the tank to a nozzle 3 ft above the ground. Gasoline weighs 42lb/ft^3...
  22. B

    Optimization question - water in a conical tank

    Homework Statement A water tank is in the shape of an inverted conical cone with top radius of 20m and depth of 15m. Water is flowing into the tank at a rate of 0.1m^3/min. (a) How fast is the depth of water in the tank increasing when the depth is 5m? Water is now leaking from the...
  23. M

    Heat Transfer Calculation for Vapor Flow in a Cylinder-Piston System

    Homework Statement A tank A is connected to a cylinder/piston as shown. The tank has a volume of 100 L and contains saturated vapor R-134a at 30˚C. When the valve is cracked open, the vapor slowly flows into the cylinder B. The piston requires a pressure of 200 kPa in the cylinder to raise...
  24. S

    Thermodynamics: Addition of saturated steam to closed tank

    Homework Statement A well-insulated closed tank is of volume 70 m^3. Initially, it contains 25000 kg of water distributed between liquid and vapor phases at 30 deg C. Saturated steam at 11 bar is admitted to the tank until pressure reaches 7 bar. What mass of steam is added? Homework...
  25. T

    Water Flow Rate From A Tap Attached 2 A Tank

    Hi guys. Can u pls hlp me out. Let's say I have a 400 liter cylindrical tank with a tap at the botom. how do I calculate the rate at which the water flows from the tap and how far the water mite go? thanx in advance
  26. T

    Does Pressure Equalize in Double Wall Steel Tanks with a Leak?

    I have a double wall steel tank system, where the inner sealed tank is 300 gallons and the outer sealed tank is 600 gallons. If the inner tank holds 68 psig and begins to leak and the pressure goes out into the outer tank also, is it still 68 psig? If not, is it directly proportional, such...
  27. A

    How to calculate rate of tank pressure change

    Hello everyone, I'm new to the forum and after doing a basic search I wasn't able to find anything that would help me with a particular problem. I'm taking an online Aerodynamics course with Embry-Riddle and I can't figure out how to solve the following: Homework Statement If air is...
  28. H

    Mass of Oxygen Withdrawn from Tank at 28.0 atm

    The pressure gauge on a tank registers the gauge pressure, which is the difference between the interior and exterior pressure. When the tank is full of oxygen (O2), it contains 15.0 kg of the gas at a gauge pressure of 41.0 atm. Determine the mass of oxygen that has been withdrawn from the tank...
  29. Y

    Bernoulli's Equation and A Water Tank w/ Small Outlet

    Homework Statement A large storage tank (diameter 10m) is filled 10m deep with water (density= 1000 kg/m^3, viscosity= 1.0x10^-3 Pa*s). The outlet at the bottom consists of 2 pipes, as shown. The large pipe has a diameter d2= 0.1m, and the smaller have a diameter d3= 0.05m and length of 20m. A...
  30. T

    Graphical way of sizing a storage tank

    The attachment shows an example from a book on how to size a hot water storage tank (for tap water). During the 24h period a total of 55 kWh is used. The red curve shows the variation in usage along the period. The slope of the green lines is determined by the heat source's power, in this case...
  31. D

    Pumping a Cylindrical Storage Tank (different variables)

    Homework Statement A cylindrical storage tank 8 feet in diameter and 20 feet long is lying horizontally on the ground. The tank is full of olive oil whose weight density is 57 lb/ft^3. How much work does it take to pump the olive oil to a level of 6 feet above the top of the tank? Almost...
  32. M

    Pressure: A Water Tank on Mars

    Homework Statement You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, where the acceleration due to gravity is 3.71 meters per second per second. The pressure at the surface of the water will be 140 kPa, and the depth of the water will be 13.8...
  33. O

    Volume of liquid flowing into a tank

    [SOLVED] Volume of liquid flowing into a tank A tank in the shape of an inverted cone has liquid flowing into it at constant rate. If the rate at which the water rises in the tank is 3x10^-2 m s^-1 when the liquid is at a depth of 2 m, calculate the volume of liquid flowing into the tank at...
  34. A

    Automatic Marking System for tank target

    I am in the process of developing an automatic marking system for range practice by the tanks. I wish to utilize sensors to check the hits or misses on a 6ftX6ft target (in the shape of paper/cloth on square metal frame). The sensor should be capable of detecting rounds hitting the target at...
  35. R

    Work to Pump Water Out of Tank: Find W w/ 62.5 lb/ft3

    Homework Statement A tank is full of water. Find the work W required to pump the water out of the spout. Use the fact that water weighs 62.5 lb/ft3. a = 5 b = 9 c = 12 The Attempt at a Solution So for this one, you have to set up a formula for a rectangular box of water. The...
  36. H

    How Does Bernoulli's Equation Determine the Discharge Rate from a Tank?

    Water flows steadily from an open tank as shown in the figure.The elevation of point 1 is 10.0 meters, and the elevation of points 2 and 3 is 2.00 meters. The cross-sectional area at point 2 is 0.0480 square meters; at point 3, where the water is discharged, it is 0.0160 square meters. The...
  37. S

    Total force by molasses on inside of tank

    Homework Statement On January 15, 1919, a cylindrical tank of molasses ruptured, and poured out over the streets of Boston in a 9 m deep stream. Pedestrians and horses were killed, and buildings were knocked down. Suppose the tank was 87.7 m high and 3.37 m diameter, and it was full of...
  38. C

    Scuba diver and pressure in air tank

    How would you go by solving this problem? I tried dimensional analysis but I got stuck.
  39. C

    Dynamics Question (water falling from the side of a tank)

    [SOLVED] Dynamics Question (water falling from the side of a tank) Homework Statement A large tank rests on the ground and has a water level 10 m above the ground. Water issues from a small hole in the side, 1 m below the the surface of the water. How far from the side of the tank will the...
  40. S

    Fluid flow out of a tank design

    Hi Everyone, First time posting here...pretty cool forum. Anyway, here is what I am looking at in nonspecific terms. I need to design a tank (non-specific aluminum material that is holding water at room temperature) that is approximately 2.5 feet (must be round) in diameter and 1.5 feet...
  41. R

    Pressure in a Tank: Questions & Answers

    Hi all, this will seem a very easy problem for you guys but its really a bit conufusing for me.. I work on an oil tanker and the problem is as follows. What will be the pressure on the filling line of a tank which is on deck when oil is being filled into the tank. For sake op simplicity let's...
  42. R

    Tank Level Monitor: Count 5 Seconds for Every Level Increase

    Tank Level Monitor! Hey Everybody!...i have a concern!...i need to do a circuit that moniotors me the level of a fluid in a tank...the thing is that i have the design...but i need to count 5 seconds everytime that the liquid gets to the next level...i mean... the tank is empty...you start...
  43. H

    Hydrogen tank de-pressurisation

    Hello all I wish to simulate hydrogen flow from a high pressure tank 700 bar down to 11 bar via a Pressure relief valve. In practice we notice the hydrogen tank cooling (starting from room temperatures) down drastically as well as the relief valve. My task is to simulate the cooling effect...
  44. T

    How Can Calculus Be Used to Solve a Tank Draining/Filling Problem?

    Homework Statement A tank contains 90 kg of salt and 2000 L of water. Pure water enters a tank at the rate 12 L/min. The solution is mixed and drains from the tank at the rate 6 L/min. Find the amount of salt in the tank after 1.5 hours. Homework Equations Assorted Calculus stuff...
  45. RonL

    Is it possible to safely clean an asphalt storage tank for water-based emulsion?

    I have looked everywhere i can think of trying to find information on how to clean a tank that has been used to store water based emulsion. The tank measures 10.5' X 30' and by rough calculation holds around 18,000 gallons of liquid. I took a hard chunk of the material and put a torch to it...
  46. O

    Partially Emptying a Tank Containing an Ideal Gas

    HI i need help for one of my homework problems. http://img141.imageshack.us/img141/290/sp3220080229004426gf6.gif
  47. O

    Differential Equation - Brine Solution Entering Tank

    Homework Statement A tank contains 80 gallons of pure water. A brine solution with 2 lb/gal of salt enters at 2 gal/min, and the well-stirred mixture leaves at the same rate. Find (a) the amount of salt in the tank at any time and (b) the time at which the brine leaving will contain 1 lb/gal...
  48. S

    Fill Tank in 24 mins Using Pipe A & B

    There are two pipes, Pipe A and Pipe B. Pipe A filled a tank in for minutes less than B does. If both pipes are open the tank is filled in 24 minutes. Find the time A will take if B is closed
  49. B

    Calculating Maximum Water Velocity in a Draining Tank with a Guillotine Valve

    Building an experimental washout tank for testing automotive adhesives. Need to calculate the maximum water velocity of the following set-up in the 3" pipe: Vertical 3" pipe approximately 3 meters high with a "T" located towards the bottom with a guillotine type valve attached to a...
  50. M

    Calculating the Net Downward Force on a Cylindrical Water Tank on Mars

    Homework Statement I have a cylindrical water tank of mars, where acc. due to gravity= 3.71 The pressure at the surface of the water is 110 kPa, and the depth of the water is 14.5 m The pressure of the air outside the tank is 91 kPa Find the net downward force on the tanks flat...
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