AIR TEASER
PUBLISHER Innovative Designs & Publishing, Inc. 3245 Freemansburg Avenue, Palmer, PA 18045-7118 Tel: 800-730-5904 or 610-923-0380 Fax: 610-923-0390 • Email: Art@FluidPowerJournal.com www.FluidPowerJournal.com Founders: Paul and Lisa Prass Associate Publisher: Bob McKinney Editor: Michael Degan Technical Editor: Dan Helgerson, CFPAI/AJPP, CFPS, CFPECS, CFPSD, CFPMT, CFPCC - CFPSOS LLC Director of Creative Services: Erica Montes Account Executive: Norma Abrunzo Accounting: Donna Bachman, Sarah Varano Circulation Manager: Andrea Karges
New Problem:
Calculate Diameters of Load-Holding Cylinders By Ernie Parker, CFPAI, CFPSD, CFPS, CFPMM, CFPMT, CFPMIP, CFPMMH, CFPMIH, CFPE
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CALCULATE THE REQIRED diameter and standard diameter needed for the cylinders to hold the load shown below.
INTERNATIONAL FLUID POWER SOCIETY 1930 East Marlton Pike, Suite A-2, Cherry Hill, NJ 08003-2141 Tel: 856-489-8983 • Fax: 856-424-9248 Email: AskUs@ifps.org • Web: www.ifps.org 2021 BOARD OF DIRECTORS President: Rocky Phoenix, CFPMMH - Open Loop Energy, Inc. Immediate Past President: Jeff Kenney, CFPMHM, CFPIHM, CFPMHT - Dover Hydraulics South First Vice President: Denis Poirier, Jr., CFPAI/AJPP, CFPHS, CFPIHM, CFPCC - Eaton Corporation Treasurer: Jeff Hodges, CFPAI/AJPP, CFPMHM - Altec Industries, Inc. Vice President Certification: James O’Halek, CFPAI/AJPP, CFPMIP, CMPMM - The Boeing Company Vice President Marketing: Scott Sardina, PE, CFPAI, CFPHS Waterclock Engineering Vice President Education: Randy Bobbitt, CFPAI, CFPHS Danfoss Power Solutions Vice President Membership: John Bibaeff, PE, CFPAI, CFPE, CFPS DIRECTORS-AT-LARGE Chauntelle Baughman, CFPHS - OneHydraulics, Inc. Stephen Blazer, CFPE, CFPS, CFPMHM, CFPIHT, CFPMHT Altec Industries, Inc. Randy Bobbitt, CFPAI, CFPHS - Danfoss Power Solutions Steve Bogush, CFPAI/AJPP, CFPHS, CFPIHM - Poclain Hydraulics Cary Boozer, PE, CFPE - Motion Industries, Inc. Lisa DeBenedetto, CFPS - GS Global Resources Daniel Fernandes, CFPECS, CFPS - Sun Hydraulics Brandon Gustafson, PE, CFPE, CFPS, CFPIHT, CFPMHM - Graco, Inc. Garrett Hoisington, CFPAI/AJPP, CFPS, CFPMHM Open Loop Energy Brian Kenoyer, CFPHS - Five Landis Corp. Jon Rhodes, CFPAI, CFPS, CFPECS - CFC Industrial Training Mohaned Shahin, CFPS - Parker Hannifin Randy Smith, CFPHS - Northrop Grumman Corp. EXECUTIVE DIRECTOR (EX-OFFICIO) Donna Pollander, ACA HONORARY DIRECTORS (EX-OFFICIO) Paul Prass, Fluid Power Journal Liz Rehfus, CFPE, CFPS Robert Sheaf, CFPAI/AJPP, CFC Industrial Training IFPS STAFF Executive Director: Donna Pollander, ACA Communications Director: Adele Kayser Technical Director: Thomas Blansett, CFPS, CFPAI Assistant Director: Stephanie Coleman Certification Coordinator: Kyle Pollander Bookkeeper: Diane McMahon Administrative Assistant: Beth Borodziuk
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The solution will be published in the February 2022 issue of Fluid Power Journal.
Solution to the June 2021 problem:
Find the Cylinder Rod
We need to find a solution where the resistance would produce a pressure of 1 psi for each hp. 60 mph = 88 feet / sec. 1 hp = ? lbs. of pull x 88 / 550 1 hp = 6.25 lbs. of pull 3” diameter cylinder = 7.068 sq. in. Since 1 hp = 1 psi, then 6.25 lbs. requires 6.25 sq. in (effective rod-end area) 7.068 – 6.25 = .818 sq. in. of rod A = D² x .7854 Working backward, rod diameter = 1. inches. Visit www.fluidpowerjournal.com/air-teaser to view previous problems.
NOVEMBER/DECEMBER 2021
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