This simulation plan aims to explain and document all steps to be taken in the simulation
analysis of the Fokker-100 case. This case is the scenario in which the aircraft touches the
ground during landing, introducing loads on the landing gear. The landing gear consists of
2 rear gears around mid-span and one in the front. Furthermore, the pilot uses the rudder
which induces a lateral force on the tail.
As stated in the assignment, it is required to find the maximum normal stress and location
of this in the fuselage, the maximum shear stress and its location in the fuselage, and the
flow in the frames that introduce the loads from the landing gears into the
The ratios of specific heats, γ = (CP/CV), for three gases (air, argon and carbon dioxide) were calculated by measuring the oscillations of different masses in various apparatus. The experiments followed Rüchardt's and Rinkel's methods; a 100ml glass gas syringe was additionally used to extend the investigation as well as a technique to elimination of friction. The approaches and results were compared; the most accurate method (Rüchardt's method alongside compensation for friction) yielded:
Air, γ = 1.358 ± 0.0038
Argon, γ = 1.6597 ± 0.0009
Carbon dioxide, γ = 1.2996 ± 0.0087
These differ from the literature value by 3.0%, 0.6% and 1.5% respectively. The reasons for these apparent discrepancies are discussed.