Air cannon Definition and 20 Threads

I was checking bait cannons and potato guns on the internet because they are fun. Maybe one day I'll build my own. First of all, these cannons use multiple sources of energy (combustion using hair spray, dry ice, etc.). I'll just consider compressed air cannons because I think they are the most...

Summary: what is the equation for a pumkin's acceleration when the air pressure in not constant. My Daughter and I are going to Pumpkin chunkin for the first time. I would like to get two orange shirts and scribble: what part of this don't you understand: (DifEq?) acceleration of a pumpkin...

I am working on an Air Blast Cannon for work and am having trouble finding the proper formulas to calibrate it. This Cannon needs to have a barrel with about a 4 inch bore. It will only be used to generate high speed air blasts, so it will not have a projectile. Are there any formulas or online...

The butterfly valve I have is controlled by sending voltages to it. It accepts 0-10V and maps a specific voltage to a specific position from completely closed (zero degrees) to completely closed (90 degrees). To clarify/reiterate it is not controlled by a servo motor. I am using this valve to...

Morning all, I am working on a Air Cannon Project and have hit a stumbling block. I am trying to work out what tank pressure and volume I would need to project a 1.4kg mass to 83m/s when it leaves the barrel. The barrel the mass will travel down is 4 meters long and 6inch in diameter, would...

Hey guys building an air cannon for class that shoots a wad of paper from a normal sheet of 8.5/11 paper will be dry. Question is... Is Psi more important or CFM with this light weight projectile? Plan on building from PVC, can do 100psi easy. Plan on using a diaphragm valve with a solenoid for...

We are building an air cannon that shoots a wad of paper. I know the volume of the tank, the pressure of the tank, the size of the barrel, and the weight of the object. I need to know how to solve for initial velocity given this information. I will use the Vi to find the estimated distance...

Greetings all. My son has asked me to help him build a small air cannon. He is very interested in the sciences, especially physics, and always wants to know as much as possible about things of that nature. The cannon we are building has the following specifications: It will be made out of sch...

I left my Air cannon outside during the winter. I was wondering if it is still safe to use or if the cold might have left it unsafe. The air tank is made of 2 PVC caps attatched to a PVC T pipe, in between there is ABC pipe spacers... The center of the T pipe is connected to a valve, which...

ok I am doing a project where i shoot a baseball from an air cannon. i am trying to solve for the muzzle velocity of what i should get at certain pressures. also i used the cross sectional area of the baseball, is that what i should use? when i solved for the force i used the force acting on the...

Physics air cannon project task: Extinguish candles on tables using a vortex ring launcher/ air cannon rules: No dimension over .305 m cannon is placed 1-6 m from target *no foreign objects may be used to help it fire 6 candle targets at increments of 1 meter distancing away...

Hi everyone, I am new here at Physics Forums and this is my first post. Earlier this evening, my dad and I were trying to figure out the initial velocity of our projectiles. We were successful in calculating the initial velocity in a vacuum, but we are perplexed as to how to calculate the...

Physics: Vortex air ring shooter? Using air only & a PUSH or a PULL with a 32 GALLON bin how do i make a vortex ring that travels Furthest? - Whats better than a regular plastic trash Bag? - Use a bungee cord? - How big does the hole in the 32 Gallon Bin have to be in order to shoot...

Hey I am new here and I've got a small physics problem for you guys (and any gals out there). I am making an air cannon for use in scenario paintball. The way its set up now is with a small expansion chamber that holds very high pressure air. I am wondering if i can use a much larger...

Homework Statement Hey guys, I'm currently working on an air cannon for my physics assignment. We are attempting to determine the effects of chamber pressure, barrel length and the depth of the projectile into the barrel on the muzzle velocity of the fired object. Now I'm not asking for a...

Homework Statement 1.75 J is required to fire a spherical pellet of radius 8.75 mm at a maximum velocity of 100 m/s Find appropriate values for the inital pressure and volume and final pressure and volume Homework Equations Adiabatic Expansion P_{1}V_{1}^{\gamma}=P_{2}V_{2}^{\gamma}...

I am a high school physics student and am building an air cannon to study projectile motion for our end-of-year project. I am trying to figure out what air pressure I need to propel a 1 lb projectile 100 ft/s. Here's what I have so far. Let me know if I'm right or wrong. Thanks...

Pressure in an air cannon-- ODE Homework Statement Okay, I'm designing an air cannon, and need to calculate the muzzle velocity. The only propelling force is the one caused by the pressure of the compressed air. Homework Equations I've been working with Boyle's law: P_0 V_0 = P_1 V_1...

I have built a pneumatic tennis ball lancher (with compressed air). I need to develop theory (i.e. equations and formula) to determine the velocity as the ball leaves the barrel. I have the projectile motion after the ball leaves the barrel down pretty well. I'm having issues acounting for...

A pumpkin of mass 5kg is shot out of an air cannon at an elevation angle of 45 degrees with an initial velocity of 54m/s. It lands 142 m away. Assuming the force due to air resistance was F=-kmv, find the value of k. I need some help with this problem. I'm not quite sure how to put in the...