Wednesday                                                                                                   03/11/2021

Lab was attended by Korosh, Amy, Sebastian and Raihan. New technique that was practice last week was utilized to manufacture the wing for this week’s plan. Spar was done by Amy and Korosh using the white foil sheets with each having a thickness of 3mm (measuring three locations and averaging the values). They were cut into rectangular shapes with length values of 75 and 38 cm and the width of 3 cm. The spar was divided into three parts for the ease of manufacturing as demonstrated in the sketch below.

There are 6 layers of the white foils stacked up together which sums up to a total thickness of 1.8 cm to form the required shape of the AG35-r aerofoil. After gluing all the 6 layers to one another for each of the three sections of the spar, all the three parts were glued and taped together. Sebastian and Raihan work on the Aerofoil, and they have used two separated sheets of the white foil each sized 50 * 75 cm rectangular shape. A half cut was made at the cord length from the top of the sheet in this case at 19 cm using a cutter blade and multiple other partial cuts using a ruler in order to avoid full separation of the material. The spar was places 5 cm from the leading edge and glued to the aerofoils one at the time the final wing had the dimensions demonstrated in the sketch below with full length or spam of 152 cm and a width or cord length of 28 cm.

Photos for the day:

Thursday                                                                                                       04/11/2021

Lab was attended by all the members of the group. The wing’s Ailerons were cut out by Amy and Korosh The fuselage and tail were assembled by Tania, Mojahed, Raihan and Sebastian. Consequently, the whole plane was assembled and prepared for testing. Extra weights ( A sum of 300 g) were added to the front of the plan to bring the centre of the gravity forward. And the tail was given a negative angle of attack to balance the moment of the plane. Flat plate was used as tail and had 12 cm width and 46 cm of length with the rudder being 21 cm tall and 13 cm long. The test flight was not successful, and the plane rolled towards left immediately after hand lunch part of the fuselage was broken. Mojahed suggested a new way of manufacturing that part of the tail which should be experimented next week.

A structural load test was performed on the wing to simulate the wing loading during the flight. Wing was clamped down to the table at half spam and the loads were applied to them at the end the wing. The deflection was measured using a ruler and the load was increased by 100 g each time until the wing failed.

Photos of the day: