Design process lab 03
Lab 03: Creative Design Thinking
For Lab 3 –Creative Design Thinking, the team members brainstormed on designs of how the AEV should be constructed. Each team members sketched their own ideas for the design of the AEV. This is to accumulate as many ideas as the members had. Each design must consider the components provided and must be aligned to the operational requirements given on the Mission Concept Review (MCR).
After about 15 minutes, the team presented each sketch and ideas behind it to the team. Many
concepts were considered like the aerodynamic factor and the stability of the AEV while moving. The final features would be decided from the four sketches. Team members need to provide a final design for the AEV. The AEV would be assembled referring to the final design.
Results & Analysis
In Zam’s sketch of AEV model, he maintained the side wing structure of the AEV sample model—which locates the motor—because of the aspect of stability. As the rail provided is not just a straight-line rail, the stability of the AEV can be gained through the deployment of the ‘wing’. He also suggested that the deployment front and back wing as in Formula 1 is not necessarily going to increase the speed of the AEV because the AEV is moving forward and backward.
In Affiq’s sketch of AEV model, it focused more on simplicity and efficiency. The model sketched has its sided-trapezoids to reduce air resistance and a rectangular-shaped base to increase space for battery and Arduino. The battery placed at the front of the AEV to maintain its stability. Using few items will make the team to have a light AEV as it might move faster, even with a low power setting. The propeller and motors were located at the side of the AEV also to increase the stability especially when it’s turning. Affiq used to brainstorm ideas by collaborating the focus (simplicity and efficiency) with designs on the internet.
In Haiqal’s design of AEV model, the structure is provoked by the design of a bulldozer. He used the design to maintain the center of gravity of the AEV model and to make it stabilize. Since the AEV will move forward and backward, he used the motor and propeller at the front and the back of the model to gain the stability when it moved at a certain angle at the track. The weight of the design is in average weight to help it to move faster and gain the inertia after the power has been turned off so that less amount energy is used. The special implantation of the ‘bulldozer’ is to get the magnet and decrease the amount of distance traveled by the model, thus will increase the efficiency of the model. The battery is placed at the bottom of the rectangle to reduce the air resistance and give the propeller more air to help the model move.
Akmal’s sketch of AEV model is inspired by the look of bird and airplane. The components of the AEV is believed to mainly focus on giving thrust to the AEV. The fillet made at the front of the model is to
reduce the weight of the AEV itself and at the same time giving aerodynamics looks which are mainly for reducing drag force. The two trapezoids that stand on both side of the AEV made it function like airplane wings and they focus on giving stability to the AEV when taking the rail corner. The 1.5″ x 3″ rectangle placed at the at the rear will made the AEV model look like an airplane with an anhedral wings. This is believed to improve maneuverability to the AEV. The main objective of making this design is to give the AEV model more efficient and to counteract the weight of the wheels and the Arduino themselves which have forced us to supply more power to the model. The design might have its downside on stability and need to be taken into consideration.
The team concept sketch was done by taking the ideas from all the individual sketches. After having discussion among team members, the final concept sketch is going to be simple .and focus on maneuverability in which both aspects were influenced by all team members’ individual sketches. In term of simplicity, team members decided to not add or do any modification to the components given so to know the performance of a simple model. Mission Concept Review focus on energy management in which in this first final concept design focus on giving the AEV model less weight and making it more efficient by adding anhedral wings (down stroke look-alike wings). The anhedral wings deployed on both sides are believed to adds power to maneuverability of the AEV. In term of stability, the weight of the battery that is placed on the front has already stabilize the weight of the Arduino placed near rear end. The final concept sketch is reasonable in term of cost as it does not require any aftermarket features. As it is the first final design, team members decided to focus on only one aspect. Addition and modification will be considered on the next design class in which performance of the AEV has been noted.