WEEK 13

 HELLO AGAIN👋 WELCOME BACK TO OUR BLOG😀 This week we learnt about the Operating Principles and Mechanical Designs. We had some activities that we did in class, so scroll down to see our discoveries we have made on the way👇👇.

OPERATING PRINCIPLES📝: 

All device, apparatus and equipment are based on working principles that are either mechanical, electrical, chemical or magnetism. just like how the separating princes of distillation and liquid-liquid extraction(LLE) is the difference in relative volatilities and how a solute can distribute itself in a certain ratio between 2 immiscible solvents.

  • some examples that are around us are:
    brewing coffee involves the leaching of coffee solubles and the air lift pump (such as one in the coffee maker) works on the principle of buoyancy.     

We had a small activity based on what principles used in our chemical product, using paper waste as fuel, is based on? Our brainstormed ideas are down below so take a look👀👇
  • Thermal process (heat exchanger)
  • Drying and separation
  • Combustion (exothermic reaction)
  • Thermodynamics:  1st law- Energy cannot be created or destroyed, it can only be converted from one form to another.

Next we learnt about the Engineering Mechanisms😯:

This refers to the mechanism of rigid or resistant bodies, formed and connected so that they can move with definite relative motions with respect to one another. In more simple terms it is something that transforms forces and movements into desired set of output forces and movement. 

We learnt on the 6 essential mechanisms📍 in functional prototypes. All the descriptions are down below💬👇.

Actuators: Converts stored energy into motion. The stored energy are usually in the form of compressed air, electrical potential or liquid pressure. There are 3 principle types such as electrical, pneumatic and hydraulic.

Cam: Converts the rotation of a shaft into simple or complex reciprocating linear motion. They can be sliding or rotational pieces in a mechanical linkage.

Gears: Transmits torque and to adjust rotational velocity. Many different types such as spurs, helical, worm, planetary and bevel gears and more.

Lever: Transmits and amplifies force by fixing the input and output about a fulcrum or pivot point.

Ratchets: They lock in one direction, allowing the, to tighten without fear of literally "going backward". Such as cable ties.

Springs: Store and dissipates energy. Many types such as compression, extension torsion, plate, constant force and more.

ACTIVITY TIME: PING PONG LAUNCHER🔫

We had to design a ping pong launcher that can hold a minimum of 5 balls. It should be able to propel the ball with stored energy. This activity was really fun as we could design and whichever way we wanted it to be as long as we meet the minimum criterias. We had to consolidate all our information in a PowerPoint slide as well. We came up with many crazy ideas in class. The chosen idea is shown down below so enjoyyy😁👇 !! 

INTRODUCING OUR PingKAF👊!!!!!


Figure 1 : PingKAF information

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