Project formula-e
The project aimed to design an electric race car integrating electrical, mechanical and aerodynamic systems.
the process
A low drag coefficient and high downforce design was used to minimize power consumption while maintaining adequate downforce for stability at high speeds. We utilized CFD tools to refine the car's aerodynamics, focusing on the smooth curvature of the bodywork and the optimization of front and rear wing angles. This was all coordinated with my team of engineers, who designed the chassis and monocoque.
Top speed 69.98 kmph
Acceleration 5.61m/s^2
drag coeff.
0.64
the Final report
This document contains the parts lists (BOM) , manufacturing methods, performance numbers, circuitry, steering, and a simple aerodynamic analysis of the formula-e electric race car.
Project cessna
Super
Before we delve into the intricacies of this project, it's essential to trace its origins. Around the age of 12, my fascination with aviation ignited through RC airplanes. These miniature aircraft offered me a tangible glimpse into the world of flight, providing an experience akin to piloting a real plane. It was during this period that I embarked on what I would now call project “Super Cessna." This endeavor symbolized my early leaps to innovate and explore the possibilities of aerospace engineering.
Aerial footage: Early flights of project “Super Cessna”
The RC Cessna became my experimental aircraft, sparking my first engineering endeavor. It began with a simple GoPro mounted underneath, but the aerospace engineer in me wanted more. I designed a custom payload drop system using a rubber band and servo mechanism, allowing precise aerial delivery. For visual flair, I added streamers, enhancing both aesthetics and performance. After a short flight and rough landing, I quickly learned the impact of drag and weight on flight dynamics. This journey of exploration began around age 12, fueling my passion for aviation.
Restoring the
The mission was to get this airframe flight-ready. A gift from one of my father’s longtime friends, the plane had most of the monokote installed but was otherwise incomplete. With only the airframe and a few parts, I had to figure out the rest. This video guide proved invaluable, offering close-up views of the airplane, which I followed to mount up all the necessary components.
The MOJO 40 is a 3D acrobatic radio controlled airplane. It has a thick symmetrical wing design which enables it to fly inverted and produce lift during various acrobatic maneuvers
Mounting the glow/nitro motor on the balsa wood airframe was a critical first step in the rebuild of the MOJO. The motor was seized up, likely due to prolonged storage or residue buildup from previous use. I had to ensure the motor and all the the moving components were well lubricated and functional before securing it to the airframe. This task required precision to ensure the motor was aligned correctly for optimal performance and stability during flight.
Screwing in the servos for the ailerons.
After securing the motor, the next step in the process was mounting the servos, and carving a hole in the mail carbon fiber fuselage spar to route cables for the rudder and elevator servos. The servos are are used for moving the control surfaces, such as the ailerons, elevator, and rudder. This was shortly followed by gluing in the servo horns, attaching the linkages and even mounting the throttle valve servo.
Modifying the fuselage spar
Wing-mounted aileron servo
Wing hatch to house electronics
One of the final steps was to patch up a few ripped sections of monokote with a new patch using a simple cloth iron.
After completing the final checks and ensuring the mixes in my transmitter were working perfectly, the MOJO 3D was all set for its maiden flight. However, there was one small oversight—I forgot to buy new glow plugs for the engine. These tiny screw-in units are crucial for ignition, as they glow when a current is applied. Unfortunately, I didn’t account for the old ones being in bad condition. As a result, the plane stayed on the ground that day. While I ended up flying a different airplane, the MOJO is still waiting for its first flight, but I’m excited to see it in action soon!