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### What's New!

Fan And Ventilation Requirements Procedure , Equations and Calculator

This webpage describes basic methods of selecting typical ventilation and cooling products based on their use and provides and example calculation and calculator.

Fan Laws and Performance Formulae

The following Formulae can be applied to any fan provided the diameter does not change. If the diameter does not change the fans must be geometrically similar. The units of density, fan rotational speed and diameter are not important as long as both are the same.

Model T Ignition Coil Part III

Knowledgeable Model T owners are aware that many different variations of the Ford/K-W ignition coils exists. Indeed, there may be no other Model T part for which so many different examples can be found. So many changes were made to these coil units that it is difficult to list them all, let alone find examples of each. Fortunately, it is now possible to roughly date particular Model T coils.

Model T Ignition Coil Part II

The Ford and K-W Ignition Company Story. In 1907 the K-W Ignition Company of Cleveland, Ohio had attempted to persuade the Ford Motor Company to adopt their magneto for the Ford Models N, R and S. Although K-W’s attempt was unsuccessful, it appears that Joseph A. Williams, president of K-W, continued to look for opportunities to hitch K-W Ignition Company’s wagon to Ford Motor’s rising star.

Model T Ignition Coil Part I

What could be more characteristic of a Model T Ford than a box containing four vibrator ignition coils on the dash? Coils that always sound like a nest full of angry bees. Coils that sometimes will reward the Model T driver with a “free start” if when the engine was turned off, one of the pistons stopped just after top-dead center on the compression stroke.

Average Wind Velocities

Average wind velocities at selected locations within the continental United States.

Metric and American Gear Equivalents Table 2

Metric and American Gear Equivalents Table 2 for sizes 7.2571 to 203.2"

Metric and American Gear Equivalents Table

The preferred standard gears of the metric system are not interchangeable with the preferred diametral-pitch sizes. The Table below lists commonly used pitches and modules of both systems.

Aerodynamics of Wind Turbines

The force of the wind can be very strong, as can be seen after the passage of a hurricane or a typhoon. Historically, people have harnessed this force peacefully, its most important usage probably being the propulsion of ships using sails before the invention of the steam engine and the internal combustion engine.

Inelastic Analysis of Geometrically Exact Rods

In this work a formulation for rod structures able to consider coupled geometric and constitutive sources of nonlinearity in both the static and the dynamic range is developed. Additionally, it is extended for allowing the inclusion of passive energy dissipating elements as a special rod element and geometric irregularities as a full three-dimensional body connected to the framed structure by means of a two-scale model.

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Metallic Materials and Elements for Aerospace Vehicle Structures

This is a source of design allowables, which are those strength properties of metallic materials and elements (primarily fasteners) that are widely used in the design of aerospace structures.

Steel Pipe Clamps Stress and Friction Capacity Analysis

Pipe clamps are often seen as simple elements used for the connection and fixation of pipes and support elements. In case of existing piping, especially in nuclear facilities welding to existing piping is often not acceptable or extremely costly. Friction based supports could offer an alternative approach if their design is proven and the occurring loads can be transferred without sliding or clamp failure.

Calculus Applications and Basics

The right way to begin a calculus book is with calculus. This chapter will jump directly into the two problems that the subject was invented to solve. You will see what the questions are, and you will see an important part of the answer.

Calculus for Engineers

The calculus course is a critical course for science, technology, engineering, and math majors. This course sets the stage for many majors and is where students see the beauty of mathematics, encouraging them to take upper-level math courses.

Manufacturers New Orders

Manufacturers New Orders: Nondefense Capital Goods Excluding Aircraft Source: U.S. Census Units: Millions of Dollars, Seasonally Adjusted Frequency: Monthly

Manufacturers' New Orders: Durable Goods

Manufacturers' New Orders: Durable Goods Source: U.S. Census Units: Millions of Dollars , Seasonally Adjusted Frequency: Monthly

All Employees Manufacturing

Source: U.S. Bureau of Labor Statistics Units: Thousands of Persons, Not Seasonally Adjusted Frequency: Monthly The series comes from the 'Current Employment Statistics (Establishment Survey).'

Engineering Services: Producer Price Index

Graph of current engineering services price index. Source: U.S. Bureau of Labor Statistics, Units: Thousands of Persons, Not Seasonally Adjusted

HVAC Air Conditioning Engineering

Air conditioning (of which refrigeration is an inseparable part) has its origins in the fundamental work on thermodynamics which was done by Boyle, Carnot and others in the seventeenth and eighteenth centuries, but air conditioning as a science applied to practical engineering owes much to the ideas and work of Carrier, in the United States of America, at the beginning of this century.

Fundamentals of Aerospace Engineering

Fundamentals of Aerospace Engineering covers an undergraduate, introductory course to aeronautical engineering and aims at combining theory and practice to provide a comprehensive, thorough introduction to the fascinating, yet complex discipline of aerospace engineering.