Industrial Training Week 8

Day

Date

Description

Monday

30/7/18

- Attach to AIROD Engineering Department.

- Introduce myself to all department staff.

- Learn about the current project that they working on.

  - Have a problem with the current ventilation system at the paint hangar at Hangar 71 AIROD.

  - Referring to NFPA Standard on Aircraft Hangar.

  - Paragraph 10.3.4 - Paint or other flammable or combustible liquid application equipment shall be interlocked with the ventilation system such that the loss of supply, makeup air, or exhaust fans that reduce the supply airflow to below 75 percent of design airflow will interrupt the operation of this application equipment.

Tuesday

31/7/18

- Learn about SLEP (Service Life Extension Program)

- SLEP is a modification(s) to fielded systems undertaken to extend the life of the system beyond what was previously planned.

- Identify aircraft model type for another country Maritime Patrol Aircraft operator.

- Identify for one type of aircraft only which is the CN-235 aircraft and what type of model.

Wednesday

1/8/18

- Learn about air flow design.

  - Many things need to be considered when doing air flow design.

  - Airflow rates

  - Heating and cooling loads

  - Temperature loss in duct

Thursday

2/8/18

- Discuss about the project which involves the ventilation system at paint hangar.

- The problem is the volume of air going out the ventilation not same as air going in.

- Need to refer the NFPA Standard on Aircraft Hangar.

- The solution is paint or other flammable or combustible liquid application equipment shall be interlocked with the ventilation system such that the loss of supply, makeup air, or exhaust fans that reduce the supply airflow to below 75 percent of design airflow will interrupt the operation of this application equipment.

- Need to design air flow system that satisfy the condition.

Friday

3/8/18

- Learn about air change.

- What is air change?

  - Air changes per hour, or air change rate, abbreviated ACH or ACPH, is a measure of the air volume added to or removed from a space (normally a room or house) divided by the volume of the space. If the air in the space is either uniform or perfectly mixed, air changes per hour is a measure of how many times the air within a defined space is replaced.

- Factor affecting air change.

  - Four properties of air affect the way in which it flows past an object: viscosity, density, compressibility, and temperature.

  - Viscosity is the resistance of a fluid to flow. 

  - The density and compressibility of air are important factors at high speeds. As an object travels rapidly through air, it causes air to become compressed and more dense.

  - The effects of temperature change on air flow also become important at high speeds. A regular commercial airplane, after landing, will feel cool to the touch. But the Concorde jet, which flies at twice the speed of sound, will feel hotter than boiling water.