A b s t r a c t | i Cessna 172 Wind Tunnel Test Imperial College London Department of Aeronautics Sergiu Petre Iliev 2 March 2013 First Year Laboratory Lab Supervisor: Mr. Ben Clapperton Personal Tutor: Dr. Vito L. Tagarielli Abstract The experiment was performed in the Donald Campbell Wind Tunnel Laboratory on the 26 th of February, under the supervision of Mr Ben Clapperton with the objective of determining the lift and drag coefficients of a Cessna 172 airplane at various angles of attack (AOA) and two air speeds. After the analysis of data gathered from the test, the Reynolds numbers have been determined and various plots have been created to show the evolution of lift and drag with change of AOA. The effects of induced drag have been observed visually and found numerically, also the stall speed of the real plane has been estimated. Following a comparison with the actual value of 26m/s (Lab Handout, 2012) the impact of wind tunnel blockage effects could be observed.