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UST Hospital had a surge of Covid-19 patients. Due to lack of mechanical ventilators and medical staffs pumping Bag Valve Mask (Ambu bag), Thomasian mechanical engineering students were asked to design a low-cost mechanically operated Ambu bag. The mechanism involves cam and follower (see figure below). Air Tube Ambu Bag Folower Cam DC Motor Aluminum Frame Design Parameters Follower Type Ambu Bag Diameter Follower Displacement Inhale Span (Rise) Exhale Span (Fall) Dwell Span Cam Base Radius Knife-Edge 200 mm 85% of Ambu Bag Diameter 1.75 sec 2.25 sec 4 sec 60 mm 1. What is the gear ratio needed to reduce the cam speed appropriate for the given parameters if the rated motor speed is 100 rpm? 2. Draw the profile of the cam and show the displacement diagram using: a) Uniform Velocity Motion b) Uniform Acceleration Motion c) Simple Harmonic Motion d) Cycloidal Motion

UST Hospital had a surge of Covid-19 patients. Due to lack of mechanical ventilators and medical staffs pumping Bag Valve Mask (Ambu bag), Thomasian mechanical engineering students were asked to design a low-cost mechanically operated Ambu bag. The mechanism involves cam and follower (see figure below). Air Tube Ambu Bag Folower Cam DC Motor Aluminum Frame Design Parameters Follower Type Ambu Bag Diameter Follower Displacement Inhale Span (Rise) Exhale Span (Fall) Dwell Span Cam Base Radius Knife-Edge 200 mm 85% of Ambu Bag Diameter 1.75 sec 2.25 sec 4 sec 60 mm 1. What is the gear ratio needed to reduce the cam speed appropriate for the given parameters if the rated motor speed is 100 rpm? 2. Draw the profile of the cam and show the displacement diagram using: a) Uniform Velocity Motion b) Uniform Acceleration Motion c) Simple Harmonic Motion d) Cycloidal Motion

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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UST Hospital had a surge of Covid-19 patients. Due to lack of mechanical ventilators and medical staffs pumping Bag Valve Mask (Ambu bag), Thomasian mechanical engineering students were asked to design a low-cost mechanically operated Ambu bag. The mechanism involves cam and follower (see figure below). Air Tube Ambu Bag Follower Cam DC Motor Aluminum Frame Design Parameters Knife-Edge Follower Type Ambu Bag Diameter Follower Displacement Inhale Span (Rise) Exhale Span (Fall) Dwell Span Cam Base Radius 200 mm 85% of Ambu Bag Diameter 1.75 sec 2.25 sec 4 sec 60 mm 1. What is the gear ratio needed to reduce the cam speed appropriate for the given parameters if the rated motor speed is 100 rpm? 2. Draw the profile of the cam and show the displacement diagram using: a) Uniform Velocity Motion b) Uniform Acceleration Motion c) Simple Harmonic Motion d) Cycloidal Motion
Transcribed Image Text:UST Hospital had a surge of Covid-19 patients. Due to lack of mechanical ventilators and medical staffs pumping Bag Valve Mask (Ambu bag), Thomasian mechanical engineering students were asked to design a low-cost mechanically operated Ambu bag. The mechanism involves cam and follower (see figure below). Air Tube Ambu Bag Follower Cam DC Motor Aluminum Frame Design Parameters Knife-Edge Follower Type Ambu Bag Diameter Follower Displacement Inhale Span (Rise) Exhale Span (Fall) Dwell Span Cam Base Radius 200 mm 85% of Ambu Bag Diameter 1.75 sec 2.25 sec 4 sec 60 mm 1. What is the gear ratio needed to reduce the cam speed appropriate for the given parameters if the rated motor speed is 100 rpm? 2. Draw the profile of the cam and show the displacement diagram using: a) Uniform Velocity Motion b) Uniform Acceleration Motion c) Simple Harmonic Motion d) Cycloidal Motion
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