GLIDER GL-1 WING STRUCTURE ANALYSIS

• Main Author: Tanoyo, Kalvin
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/62095
• Institution: Institut Teknologi Bandung

In developing an Indonesian National Glider which is called GL-1, internal structure analysis is required. Study about the structure of the wing had never been done before. This report will discuss a study about glider GL-1 wing structure strength and deflection and the effect to its control mechanism based on regulations. The first step is to do a literature study about analyses which had been done before. Next, a study about the regulation, which is CS-22, must be done. Also, a study about manufacture processes has to be done to confirm that the structure design could be manufactured. After acquiring GL-1 wing structure configuration, analytic calculations will be done. The first thing to do is to calculate the wing structure weight distribution. Based on the result of load distribution, stresses received by the wing structure are calculated. The calculation results are compared with the material strength to ensure its safety. After that, a calculation to predict the wing spar deflection and its effect on control mechanism such as flap, airbrake, and aileron will be done. Calculation result, based on one of material strength properties, have shown that the wing spar structure could withstand any tensile load applied to the structure, but it could not withstand compressive load because the compressive stress has passed material compressive strength. A few options such as studying the effect of upper and lower spar cap thickness and limiting the load factor have been considered. But they still could not prevent failure. The deflection calculation has shown that at maximum load factor, the wing tip will deflect upward 0.64 m. The results are also compared with visual observation of some glider documentation, resulting in similar deflection characteristic between GL-1 and compared glider.