Piper Saratoga Lab Report

Coefficient of lift. To achieve the overall result of the lift to drag ratio of the Piper Saratoga, first it is necessary to calculate the coefficient of lift 〖(C〗_L). To begin this process, the total weight of the aircraft needs to be calculated. With the passengers loaded and the remaining fuel on board, the Piper Saratoga weighed 3,311 pounds. Next, the non-standard density of the air at 5,000 MSL feet must be calculated. In order to do this, non-standard pressure at 5,000 feet MSL must first be calculated. Within the equation is standard day pressure at sea level (2116.2 psf), symbolized by P_0, the standard lapse rate (-.00356(°R)/ft), symbolized by a_0, standard day temperature at sea level (519°R) symbolized by T_0, gravity (-32.2 ft/s), symbolized by g, and the gas constant (1716(ft^2)/(S^2×°R)), symbolized by IR. When calculated, the pressure at 5,000 feet MSL is 1,760.63 psf.
To calculate this, the outside air temperature at 5,000 feet must be converted to Rankin from Fahrenheit. Therefore, 52°F+460=512°R. Within the equation is non-standard pressure at 5,000 feet MSL (1,760.63 psf), symbolized by P, divided by the gas constant (1716(ft^2)/(S^2×°R)), symbolized by IR multiplied by the outside air temperature (512°R). When calculated the density (ρ) at 5,000 feet MSL is .00200 sl/(ft^3