Module 7.5 Flashcards
What must you never do to engineering drawings?
Never make notes or print on them unless authorised
What are the 3 types of working drawings?
-Detail
-Assembly
-Installation
What is a detail drawing?
Displays how to manufacture the part
What is an assembly drawing?
A drawing of how to assemble a multiple piece item, it references part number
What is an installation drawing?
Shows you how to install the sub assembly onto the aircraft
How is an installation drawing named?
By the final operation performed by the installation
What are the 4 types of sectional drawings?
-revolved section drawings
-removed section drawings
-complete section drawings
-half section drawings
Why would a revolved or removed section drawing be used?
When only the shape of a port needs to be shown
What is the main difference between removed and revolved section drawings?
The location of the drawing
What can half sectoral drawings be used for?
-view of both internal and external of a part
-upper half typically internal
What is an exploded view drawing?
Shows every point in their relative places just expanded outwards
What are block diagrams used for?
To aid troubleshooting in complex electrical and electronic systems
What do individual blocks represent in a block diagram?
Several components
What are the two types of flowchart?
-troubleshooting
-logic
What are logic flowcharts used for?
Analysing digitally controlled components
What do schematic drawings show?
Where objects are in relation to each other and flow direction if applicable
What are schematic drawings ideal for?
Troubleshooting
What is used to show components in electronic schematic drawings? And what do the drawings show?
-symbols represent components
-only show function and flow NOT placement
How are components represented in a pictorial diagram?
With pictures of the actual components
What do schematic diagrams give?
A complete overview of an aircraft system
What are schematic diagrams used for?
To initiate fault diagnosis
What are the 6 possible views that an object can be drawn in with orthographic?
-front
-rear
-top
-bottom
-left side
-right side
In first angle what does each view represent?
To remote view from the adjacent view
What does each view in 3rd angle represent?
Side of the object that is nearest to it in adjacent view
What are the 4 steps to creating a sketch?
-block in
-add details
-darken views
-add dimensions
Basic shapes can be drawn with templates or by freehand when would templates be recommended?
-complicated
-freehand
What must repair sketches provide?
All necessary info to manufacture or repair the part
What angle are isometric drawings drawn at?what about oblique?
ISO 30 degrees to drawing plane
OBLIQUE 45 degrees to drawing plane
What can be said about the actual angles and dimensions in a perspective drawing?
They are inaccurate
How are different materials represented?
Material symbols
How can surface texture be represented?
-micrometers
-roughness
If the roughness is between limits how is surface texture represented?
Max and min
What is the no surface finish symbol?
Circle and tick
What are the 3 types of hole?
-plain drilled
-reamed
-threaded
What are the 3 types of recessed holes?
-counterbored
-spot face
-countersunk
What info is displayed in the tittle block?
-drawing number
-name of part or assembly
-scale
-date
-name of firm
-name of drafter,checker and approver
Where is the title block typically found?
Bottom right corner
What must always be checked? (Prior to use)
Make sure it’s the most recent revision
Where would all parts be displayed that are required for the task?
Bill of materials
Electronic schematic drawing symbology provides what?
Most detail and info about
What are the common terms computer graphics?
-Computer Aided Design (CAD)
-Computer Aided Design & Drafting
-Computer Aided Manufacture (CAM)
-Computer Aided Engineering
What is microfiche and microfilm?
Analogue storage system using film reels
What does 85mm film provide?
A better image
What is microfiche?
Card with pages
When taking a picture of some damage what should be done?
Place a reference object
-rule
-coin
Etc
What is the ATA spec 100?
Standardised chapter system
What are the chapters divided into?
-sections
-subsections
-subjects
ISO is the largest developer of what?
Global standards
What is the longest standard?
AN airforce/navy
What does ISO produce?
-set of manufacturer standards
-trade fair and easier
-provide government with base for HS and environmental legislation
-safeguard consumers
In MS fittings what does cross referencing allow?
Subbing of MS hardware for AN hardware
What is the NAS based on?
On the approval of military hardware
What standards does the BSI control?
British Standards
What do block diagrams provide?
A general overview of part of or a whole system
What do simplified schematic diagrams provide?
Simplified view of functions, components and interfaces.They show more detail than block diagrams
What do system schematic diagrams show?
Sufficient depth and detail for fault isolation to LRU level
What info does a wiring diagram provide?
-Detailed wiring of a system
-size of wire
-type of terminals
-connectivity of other systems
How do wiring diagrams identify each component?
-part number
-serial number
Where would wiring diagrams be found?
In the amm and fim
How do all diagrams show the aircraft?
Power off post flight condition
What is the SWPM and the ESPM
-Standard Wiring Practices Manual (Boeing)
-Electrical Wiring Practices Manual (Airbus)
Both contain info on how to carry out tests
What does the WDM do on Boeing aircraft?
Wiring diagram manual, organise diagrams,drawing and lists
When is a home diagram assigned?
Any wire termination used for 3 or more wires shown on 3 or more wiring diagrams
When releasing a pneumatic system what should be done?
Pressure first
What is most important in the AV bay?
Ventilation for heat dissipation and to stop condensation
What type of fluid has the best holdover time?
Type 4
What is the purpose of anti-ice code?
Communication between anti-ice team and flight crew
True or false “type 3 is a compromise between type 1 and type 2”?
True
Type 2 can be used on large aircraft due to what?
Flows air over 100 knots
When should a water test/check be done,
Every time
What are type 1 fluids used for?
De-icing limited anti-ice effects
What is the purpose of bonding?
To keep same potential so no sparks occur
Grounding points can also be used for what?
Bonding the truck to the aircraft
What is the difference between parking and storage?
Parking keeps aircraft in a service ready state, storage requires a return to service
What colour is jet A fuel?
Colorless fuel
Where should protection devices be installed?
Inlets,outlets,sensors
Extended parking periods how should the fuel tanks be?
Full
Where will the plumber Bob/ attitude monitor be?
Right wheel well
How many personnel are required in the cockpit when towing?
2, one for brakes and one to observe hazards
What does leaving the aircraft in a straight prevent?
Side ways loads
What does the sheer pin do in a row bar?
Breaks under excessive forces
What does a wiring show?
Size of wire and terminal type
Structures are what groups?
51to 57
How is a centre line shown?
Short and long dashes
Dimension line is shown how?
Solid line
Phantom lines are indicated how?
One long two short shashes
What does a tick with a circle inside mean?
No surface finish
First angle what side is being drawn?
Remote view
Third angle what side is being drawn?
Near view
What can replace a block diagram?
Pictorial diagram
Difference between assembly and exploded view?
Assembly drawing shows how the parts are assembled.
However, exploded view shows all parts and relative position but expanded (3D drawing) afterwards.
