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Ipsen, Inc.
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Articles About jet engine


1 It's No American Dream: Pratt & Whitney GTF Engine Now a Reality... (November/December 2011)

In the August 2008 issue of Gear Technology, we ran a story (“Gearbox Speed Reducer Helps Fan Technology for ‘Greener” Jet Fuel Efficiency’) on the then ongoing, extremely challenging and protracted development of Pratt & Whitney’s geared turbofan (GTF) jet engine.

2 Refurbishing a Ball Mill ; Bevel Gear Backlash (September 2012)

Our experts comment on reverse engineering herringbone gears and contact pattern optimization.

3 Viewpoint (November/December 1991)

Dear Editor: In Mr. Yefim Kotlyar's article "Reverse Engineering" in the July/August issue, I found an error in the formula used to calculate the ACL = Actual lead from the ASL = Assumed lead.

4 My Gear Is Bigger than Your Gear (March/April 2013)

Industry battles it out for World's Largest Gear title.

5 Going to Gear Expo (September 2013)

Like many of you in the gear industry, we’ve been working extremely hard over the past few months getting ready for Gear Expo 2013, which takes place September 17-19 in Indianapolis.

6 Super-Sized Quality Control (January/February 2014)

It's not easy being big. Maybe that's not exactly how the phrase goes, but it's applicable, particularly when discussing the quality requirements of large gears. The size alone promises unique engineering challenges. BONUS Online Exclusive: Big or Small - Inspection is Key to Success.

7 Industry News (October 2013)

The complete Industry News section from the October 2013 issue of Gear Technology.

8 Gear Fundamentals Reverse Engineering (July/August 1991)

Whether gear engineers have to replace an old gear which is worn out, find out what a gear's geometry is after heat treatment distortion, or just find out parameters of gears made by a competitor, sometimes they are challenged with a need to determine the geometry of unknown gears. Depending on the degree of accuracy required, a variety of techniques are available for determining the accuracy of an unknown gear. If a high degree of precision is important, a gear inspection device has to be used to verify the results. Frequently, several trial-and-error attempts are made before the results reach the degree of precision required.

9 Engineering Constants (July/August 1986)

Below are listed a variety of commonly used constants arranged numerically to permit ease of reference. Wherever an asterisk (*) is shown, the constant is exact as given, it being generally a mathematical constant or one fixed by definition. In cases where the first constant listed is followed by another in parenthesis, the first is the round number generally used, while the second is the more exact value.

10 Optimism in Wind Abounds (January/February 2009)

Big gears and wind turbines go together like bees and honey, peas and carrots, bread and butter and—well, you get the idea. Wind isn’t just big right now, it’s huge. The wind industry means tremendous things for the energy dependent world we live in and especially big things for gear manufacturers and other beleaguered American industries.

11 High-Tech Risks and Rewards (June 2009)

Aerospace/Defense contracts offer unique challenges for gear manufacturers.

12 What's the Right Tolerance (March/April 2006)

Charles Schultz of Brad Foote Gear Works discusses some of the finer points of engineering tolerances--and muscle cars.

13 The U.S. Needs More Engineers (March/April 2008)

State Schools Lack Funding. Who Loses? We all do.

14 Gearheads Rejoice! The Internal Combustion Engine is Back (May 2011)

The opposed-piston internal combustion engine is making a comeback.

15 ...And from the Industry (October/November 1984)

Industry News from October/November 1984 Gear Technology.