Recent content by Ed Lenarduzzi

"It depends on what you hold constant and what you don't when doing the analysis." I'm not sure what you mean but the volume is not constant at all. "If you pump the air to a certain pressure, then the pressure is the pressure is the pressure." This is my point. I believe the pressure is a...

A heavier pellet that will cause the piston to bounce back will not reduce the kinetic energy transferred to the pellet. In fact the heavier pellet will extract the maximum energy (not velocity) from the system. I did say "spring force". Please excuse my lack of proper terminology. I didn't mean...

Yes the lower density of the hotter air will accelerate a little more quickly as it's weight, as well as the pellet's, must be taken into account. It doesn't explain the claim of higher pressure though.

This question came to mind after reading a recent article in 'Hard Air Magazine' entitled 'Ham Airgun Technical'. This quote is from the first paragraph. "Broadly, there are two types of airguns; springers (including gas rams), and pneumatics. The former compresses the air during the shot...

Thank you Bystander. I know about airgun energy with different bore diameters vs pressure and discharge volume. Does anyone understand the pressure/heat relationship in a sprung piston condition? Ed.

Yes compressing air increase its temperature but does that necessarily increase pressure? In an pellet gun a spring driven piston compresses the air which increases the temperature but wouldn't any increasing pressure simply retard the piston's advance? Because the chamber volume is not fixed...

Well, thank you everyone. Even though most of it is over my head I did learn somethings. I have no formal education in physics but watch every science program on cable including Brian Cox's recent series. He loves saying billionths of billionths...of a second after the start of the universe...

If the big bang through matter in every direction away from itself (the center) shouldn't there be a huge void there?

Thank you so much gentleman. Your answers confirmed what I've already been told on the Canadian Airgun Forum. http://www.airgunforum.ca/forums/topic71812.html Apparently I was wrong that a horn shaped funnel would help accelerate the air through the barrel. Ed.

I don't know if you saw the video I included in my last message but it might show a 'diverging section' not that I don't know what that means. Ed.

The air must be going faster than the speed of sound if it is driving a pellet out the muzzle at 2,031fps. https://www.youtube.com/watch?v=JWt5DnfYH3I&feature=player_embedded

I don't have a post secondary education so I don't know if I asked an impossibly difficult question. Perhaps this is the sort of question that's more easily answered by an experimentation that math.

Thank you for your concern but it's done all the time with precharged pneumatic air rifles. In fact this rifle shot a pellet near mach 2. My real question is how much faster would it have gone if the air chamber had a funnel horn before the barrel or would it have made any difference at all.

You have a cylindrical chamber with a 5cm ID and 55cc capacity filled to 4,000psi of air at 70*F and want to released the air threw a tube of .5cm ID. What's the initial velocity (in fps please) as the air leaves the chamber's end directly threw the .5cm tube? What's the initial velocity as the...

I'm insatiably curious of the working of this planet I landed on. Unfortunately I squandered my life away in a factory. Now retired I have more questions than my poor education can answer.