Stepper Motor Theory of Operation Stepper motors provide a means for precise positioning and speed control without the use of feedback sensors. The basic operation of a stepper motor allows the shaft to move a precise number of degrees each time a pulse of electricity is sent to the motor. Since the shaft of the motor moves only the number of degrees that it was designed for when each pulse is delivered, you can control the pulses that are sent and control the positioning and speed. The rotor of
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LOGISTIC AND TRANSPORTATION MANAGEMENT MKT 681 Research paper On Submitted to: Prof. Dr. Md. Habibur Rahman Dean, BBA Program School of Business & Economics United International University Submitted By: Laskar Md. Muid 112 113 004 (group leader) Samsul Arefin 112 112 058 Tulloh Nasreen 112 112 062 Munia Alam 112 111 004 Mohammad Rezwan Khalked 112 113 017
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wide-body airliners and a single class service on the smaller aircraft. The Maslin Executive Class cabin on its Airbus A310s is set up in a 2-3-2 configuration while the setup on the Douglas DC-10-30s is a more roomy 2-2-2 configuration. The economy class cabins are set up in a typical 2-5-2 configuration. The Douglas DC-10-30s are equipped with a projector in each cabin while the Airbus A310s have monitors that drop down from the ceiling below the luggage racks in the center of the aircraft. Promotional
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2013 Lockheed TriStar Case Study Group 6 Leon Krolikowski Sitaram Koppaka Brian Manning Tushar Mahajan Ryan Maggiorini Nicholas Manning UNIVERSITY OF MASSACHUSSETS SUMMER 2013 SCH MGMT 640 PROFESSOR RAJ GUPTA Table of Contents Executive Summary 2 Introduction/Motivation 3 Data Analysis and Results 4 Conclusion 8 Appendix 9 References 10 Executive Summary Lockheed’s L-1011 Tri Star Airbus program was a long-term, capital-intensive endeavor projected to strongly
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L1011 Tristar Project Recommendation In 1967, Lockheed Corp., the American aerospace company that monopolized the military market for aircrafts, set out to compete in the commercial sector by replacing the Boeing 747 and the McDonnell Douglas DC-10. Lockheed invested tremendous resources into the Tristar thereby jeopardizing the entire corporation’s well-being on this singular project. Tristar distinguished itself from other aircrafts of its kind thanks to the highly-efficient, formidable Rolls-Royce
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synergy with successful jet aircraft programs with new programs that can generate very large cash flows. The Lockheed TriStar Jet is a medium-to-long range wide-body trijet airliner and was the third to enter commercial operations, after Boeing 747 and DC-10. The program faced various issues during its operation, as the utilization of only one jet engine supplier (Rolls Royce), low estimated required rate of return 10%, and a misjudge of the break-even point of 210 aircrafts, that it is going to be shown
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Cause(s) of Accident The NTSB determined the cause of the accident to be the asymmetric stall and the subsequent roll of the aircraft. This was caused by uncommanded retraction of the left wing outboard leading edge slats and the lass of stall warning and slat disagreement indication systems. This was a result of the separation of the number 1 engine and pylon assembly at the critical point during takeoff, Accident Threat Categories. (n.d.). Structural and Mechanical Factors NTSB believes that
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Radio Frequency modules signals are used in wireless remote control system for transmitting and receiving wireless logic signals to control the motors of the Spy robot control system. The three Brush DC motors and the two L298N are involved in Remote Operated Spy Robot. L298N are used to drive the Brush DC motors respectively. In this paper, Remote Operated Spy Robot is a small robot designed for spying, surveillances and inspection purposes. Index Terms-Microcontroller, L298N, spy robot I. CCD camera
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at Ermenonville (Johnston, 1976). Executive Summary In 1974, Turkish Airlines Flight 981 experienced a mid-flight cargo door failure which led to the first total loss of a wide-bodied aircraft in history. The aircraft was a McDonnell Douglas DC-10, and this tragedy was compounded by the fact that sufficient corrective action had not been taken by the manufacturer after precursory failures had occurred over the four previous years. The purpose of this report is to evaluate the ethical nature
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Conclusion 2. Case Studies a. Risk Communication During the Washington D.C. Sniper Crisis b. The Homeland Security Advisory System c. A Comparison of Leadership Between Two Outbreaks of Smallpox in the United States: New York City, 1947, and Milwaukee, 1894 3. Additional Sources of Information 4. Glossary of Terms 5. Acronyms 6. Discussion Questions a. General b. Washington, DC Sniper c. Homeland Security Advisory System d. Smallpox Outbreaks
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