Recent content by Dieseltwitch

In fact in a movie, i think it was air force one or something... they show an apu( aux power unit) that pops out with a turbine on it, when the aircraft has a loss of power for some reason.

Because most of those book don't take into account air resistance. or at least how it pulls it down to Earth over time. most of the books your talking about only use it to see how a bullet slows down over time but doesn't put it in with the angle calculation. shooting in the north has little to...

two words... air resistance A projectile travailing at 45 deg will lose more velocity over less ground covered then a projectile at 30 deg

http://www.grc.nasa.gov/WWW/K-12/airplane/drageq.html"

At the risk of sounding like a moron... HUH?

Ok so i have looked and looked for a simple way to under stand how to find drag using the coefficient of drag. the formula i found is off of NASA website and it reads Drag = Coefficient * [ (Density * Velocity ^2)* .5 ] * reference area here is my question what units do i use. When i...

Think i figured it out. Ok so here is what i did... (CHECK ME and let me know if i messed it up) First i needed to find the force on my car. being that the force changes dynamically with the speed of the car. I ran the car up to 85 mph and pushed in the clutch. Then I let it fall from 85...

Power and Tq Needed to keep a car rolling at speed Ok so I am working on a personal project to formulate hybrid systems for a given car. Before i can do any of the electrical math however i need to find how much power and tq it takes to no only get the car moving but keep it moving (flat & any...

I also found this. a Bolt Strengh Calculator but you need to know every thing to use this http://www.norbar.com/torquetensioncalculator.php

if your looking for what caps the ram then you need to look at the tensile strength of a bolt, this is calculated buy knowing a number of things about the bolts them self; 1. Bolt Shank Dia. 2. Tread Type (fine/ course) 4. Bolt Material 5. Heat Treatment Used know how much pressure you going...

Posted this in another post but the idea is the same new here but what about treating it like a round mag lev. buy using a center core of iron or some other metal. and and outer layer of what ever material. you could suspend the tire and also rotate it buy means of manipulation of the magnetic...

new here but what about treating it like a round mag lev. buy using a center core of iron or some other metal. you could suspend the tire and also rotate it buy means of manipulation of the magnetic field, Near Zero Friction, No Drive to wheel traction issues and very quick response!