The design report

Landing gear geometry 3.1.7
Landing gear design initiated with the decision that a quadricycle configuration would
be used for this twin fuselage design as it has been used historically with great success
for similar designs. The quadricycle design consists of 4 landing gears in total, with two
nose gears and two rear or main gears. The four wheels usually take off at the same time
with both the front gears being used to control direction of aircraft with the help of
rudders during taxi, take off and landing. Figure 4.1.501 shows the key idea of a
quadricycle configuration.
Figure 4.1.501- The quadricycle landing gear configuration
At that stage, the group thought that landing gear was a minor component and not a lot
of time was spent on it. A conventional quadricycle configuration was chosen after
discussion with the professor. This configuration was easy to design and the group
believed that it would serve its purpose.
Control surface sizing 3.1.8
The control surfaces consist of ailerons, elevator and rudder. The sizing was chosen
after suggestions from the professor that ideally all control surfaces are approximately
30% of the chord and around 30% of the span. Final control surface sizing and
calculations are shown in appendix D.