Приложения разработчика 76239apps в Android Market

Reynolds Number Calculator (v. 1.1.1)

76239apps опубликовал приложение 2012-01-11
(обновлено 2014-01-24)

This app provides a quick and easy way to calculate Reynolds Number.  The user only needs to enter in the fluid properties, characteristic length, and fluid velocity.  Density and dynamic viscosity calculators are given for air and water.  A hydraulic diameter calculator is also included for problems involving internal flow in rectangular ducts.

What is Reynolds Number?
The Reynolds number is a dimensionless number used to describe flow conditions in Newtonian Fluids.  It is a ratio of inertial forces to viscous forces in the fluid.  If the flow is internal, the Reynolds Number can tell you if the fluid flow is Turbulent, Laminar, or Transitional.  This number is commonly used in a variety of engineering scenarios.

Currently Supported Units
Density:  kg/m^3, lbm/ft^3, lbm/in^3
Dynamic Viscosity:  Pa*s (kg/m-s), centipoise, lbm/s-ft
Length/Diameter:  m, cm, ft, in
Fluid Velocity:  m/s, cm/s, ft/s, in/s

Ballistic Energy Calculator (v. 1.0)

76239apps опубликовал приложение 2011-12-24
(обновлено 2011-12-24)

This application calculates the kinetic energy for rifles, handguns, and shotguns.  Any caliber can be used as long as the muzzle velocity and bullet mass (weight) are known.  The Ballistic Energy Calculator is especially useful for comparing hunting rounds and comparing personal defense rounds.  In general, the more kinetic energy a bullet has, the more energy will be released into your target.

This app gives a choice of two unit systems, US Customary and SI (metric).  The US Customary option allows velocity input in terms of feet per second (ft/s) and bullet mass input in terms of grains (gr).  Kinetic energy is calculated in foot pounds (ft/lbf).  The SI (metric) option allows velocity input in terms of meters per second (m/s) and bullet mass in terms of grams (g).  Kinetic energy is calculated in joules (j).

Threading Tools (v. 1.1)

76239apps опубликовал приложение 2011-12-15
(обновлено 2011-12-15)

This application gives six sets of drill & tap tables, one table for each series.  This includes: United National Coarse, United National Fine, National Pipe Tapered, National Pipe Straight, Metric Coarse, and Metric Fine.  This app eliminates the need to look up tap drill sizes in your machinist handbook.  Decimal equivalents of fractional and letter drill sizes are also given.