Title of the Report
A. Partner, B. Partner, and C. Partner
Abstract
The report abstract is a short summary of the report. It is usually one paragraph (100-200 words) and should include about one or two sentences on each of the following main points:
1. Purpose of the experiment 2. Key results 3. Major points of discussion 4. Main conclusions
Tip: It may be helpful if you complete the other sections of the report before writing the abstract. You can basically draw these four main points from them.
example: In this experiment a very important physical effect was studied by measuring the dependence of a quantity V of the quantity X for two different sample temperatures. The experimental measurements confirmed the quadratic dependence V = kX2 predicted by Someone’s first law. The value of the mystery parameter k = 15.4 ± 0.5 s was extracted from the fit. This value is not consistent with the theoretically predicted ktheory = 17.34 s. This discrepancy is attributed to low efficiency of the V -detector.
1. Introduction
This section is also often referred to as the purpose or plan. It includes two main categories:
Purpose: It usually is expressed in one or two sen- tences that include the main method used for accomplish- ing the purpose of the experiment.
Ex: The purpose of the experiment was to determine the mass of an ion using the mass spectrometer.
Background and theory: related to the experiment. This includes explanations of theories, methods or equa- tions used, etc.; for the example above, you might want to explain the theory behind mass spectrometer and a short description about the process and setup you used in the experiment. It is important to remember that report needs to be as straightforward as possible. You should comprise only as much information as needed for the reader to un- derstand the purpose and methods. Your should also pro-
vide additional information such as a hypothesis (what is expected to happen in the experiment based on the theory) or safety information. The main focus of the introduction mainly focuses on supporting the reader to understand the purpose, methods, and reasons for these particular meth- ods.Purpose of the experiment
Example:
Calculation of the pressure coefficient Cp
From the lectures notes, Cp can be obtained by the eq. (1)
− Cp = P − P∞
1 2 ∗ ρ ∗ U2∞
(1)
Where P and P∞ are respectively the local pressure and the atmosphere pressure far away. U∞ is the wind velocity
Preprint submitted to supervisor September 9, 2019
of the wind tunnel.
Calculation of the lift coefficient CL
First, the expression for the pressure force acting nor- mal to the chord line is given in the lecture notes as eq.(2),
Cn = ∮ Cp(−n̂ ∗ ŷ)dl, (2)
with Cp the coefficient of lift and n̂ the unit normal vector pointing out of the surface, ŷ is the unit vector in the direction normal to the chord line. dl is the length of an infinitesimal line element. Similarly, the axial component can be express as eq.(3)
Ca = ∮ Cp(−n̂ ∗ x̂)dl, (3)
2. Method
This is a short (half a page or so) passage in your report which should include the experimental process exactly as it was done in the laboratory. The procedure should be written in paragraph form. You should not copy the lab manual. It is possible that the experiment you have done has slightly difference procedures than in the manual. You should not include any results (things happened during the procedure). A good rule of thumb for complete but brief experimental procedures is to provide enough information so that the reader of your report would be able to repeat the experiment.
A first offset measurement was taken with the pressure scanner, sample at 800 Hz for 10 seconds , while matlab was taking an offset measurement. After the offset measur- ment done , the wind tunnel VFD RPM was set to reach the target U∞ within ±0.5m/s. For each of the following α= [-8 -6 -4 -2 0 2 4 6 7 8 9 10 11 12 13 14 16 18], the same procedure was repeated :
The turntable was set to the right angle of attack (as shown in fig.(1)). Then the dynamic pressure and the tem- perature were taken (1000 Hz for 30 seconds for pressure, and 14 Hz for 10 seconds for the temperature).
While Matlab was taking the data , the pressure scan- ner was run to take measurement at 800 Hz for 60 seconds. After changing the angle, a break of 5 seconds was taken in order to fully settle the flow into a steady state before taking the next set of measurements.
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