Reference no: EM131274010
Design Assignment - Overview and Explanation
Individually, or in groups of no more than three students, you are to design a radiator for a deep-space spacecraft that satisfies the customer design requirements listed below. For the radiator to be feasible, it must meet the requirements. The radiator is a component of an active cooling system that employs an anhydrous ammonia pumped fluid loop to remove thermal energy from the spacecraft and transport it to the radiator inlet. After flowing through the radiator, the cooled ammonia returns to the spacecraft and the cycle repeats. Also provided below is a list of customer "desirements" giving additional attributes (somewhat more vague) that are highly desirable, but not mandatory. The best design will meet all of the requirements and address all of the desirements that do not put unacceptable burden on the design. (The degree of unacceptability is dependent on the overall design solution and will vary depending on the design solution chosen.)
Engineering design is inherently a creative process where several unknowns exist and can be traded against each other to achieve an acceptable solution to the problem. Designers need to understand customer needs to arrive at acceptable solutions. Designers should work with customers to define clear, concise, and complete requirements sets at the beginning of a project, but designers must also expect to encounter additional questions that need to be coordinated with the customer to ensure the customer's needs and objectives are met by the design solution. This means communication between the design team and the customer is essential throughout the process but especially during the early phases of design. For the class design project, the instructor will serve as the customer. Any questions you have about the applicability or interpretation of requirements should be directed to the instructor in writing (preferably by e-mail).
As noted in the course syllabus, work on the design project will be performed outside of class time. It is expected that the student(s) will use thermal design concepts, analyses and tools introduced and developed in the course, but additional research and study of material outside the normal Heat Transfer Course scope will be required to create an outstanding design solution. The integration and use of other mechanical engineering concepts, analyses and tools (e.g., fluid-flow analyses, structural analyses, materials evaluations, etc.) are strongly encouraged to make the design project the most beneficial to the student's learning experience. (Try applying what you've learned in other courses. You should have fun with this!)
Reporting
The design solution must be communicated to the customer in both a written report and an oral presentation. The written report is due Friday, December 5th at the beginning of class. The oral presentations will be given to the class on Monday and Wednesday, December 7th and 9th. (Presentation order will be determined at a later date.) The report outline is as follows:
Title Page
Executive Summary (one page maximum) Table of Contents
Design problem statement
- Include design requirements Detailed design documentation including:
- Description of the design concept and configuration
- Results of analyses and trade studies
- Drawings
- A detailed parts list (identify material and mass of each part) Conclusions
References Appendices (if needed)
The oral presentation should be a five-minute summary of the design concept description and your conclusions.
Customer Design Requirements
Ammonia flow rate into radiator: 0.05 kg/s Ammonia inlet temperature: 12.7 ºC Ammonia inlet pressure: 2.0 MPa Ammonia exit temperature: -40 ºC
Presents only controllable safety hazards during build, assembly, and processing
Customer Design "Desirements"
Minimized mass Minimized stowed volume
Maximized manufacturability Minimized cost
Minimized time to delivery
10-year or greater operational life
0.2 MPa maximum NH3 pressure drop (inlet-to-outlet)
Making use of an appropriate ad-as model
: You have been appointed economic advisor to the policy makers of your country. Your task is to devise and implement measures that will reduce structural unemployment and alleviate poverty in your country. Critically discuss the two measures and il..
|
Who want more protection of species
: This environmental controversy focuses on species biodiversity and The Endangered Species Act of 1973. Many issues are being debated between those who want more protection of species and those who are looking out for commercial interests.
|
Ethical challenges in the global business environment
: Go to "SEC Enforcement Actions: FCPA Cases" found at http://www.sec.gov/spotlight/fcpa/fcpa-cases.shtml. Select a case, and provide brief description of the case you have chosen. Discuss two strategies the company could have used to avoid the situ..
|
Firms pursue vertical integration strategies
: All of the following are reasons that firms pursue vertical integration strategies except:
|
Design concept description and your conclusions
: MCE 324 Heat Xfer Section 2, Fall 2016 - The oral presentation should be a five-minute summary of the design concept description and your conclusions - Customer Design "Desirements"
|
Principles of economic-price elasticity of demand
: One common good that consumers see elasticity in prices is gas. In looking at gas, we see it is a good that many people use. Do you find the increase in the cost of gas will increase the cost of other goods? answer and give and example.
|
What exactly are situational effects on consumer behavior
: Provide at least three examples of ways in which situational effects influence your own consumer behavior. That is, provide at least one example of how situations influence brand preference, one example of how situations stimulate purchases, and o..
|
Write a business letter to jin ree at chung iron works
: Write a business letter to Jin Ree at Chung Iron Works , 2255 NW Yeon Avenue in Portland, OR 97210.
|
Explain a swot analysis with a minimum of three elements
: It's important for the marketing manager to understand the competitive environment within the industry in which they operate. Compile a detailed competitive analysis looking at the top three or four competitors and differentiating each against you..
|