Ch 5 - Cargo Loading And Limitations Flashcards Preview

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Flashcards in Ch 5 - Cargo Loading And Limitations Deck (12):
1

Cargo Loading Methods

- Unit loading Devices (ULD)
- Containers
- Pallets

- Loose load (individual bits of cargo restrained by nets)

2

ULDs

- Containers
- Pallets
(Number of standard sizes for both of them so they are compatible across different aircrafts)

Carried:
- Lower Decks (pax flights)
- Main and lower decks (cargo)

3

Pallets

Sheets of aluminium with rims (for nets and straps to be secured to) to secure pallets to the floor

Usually transported on roller floors within tracks:

- Roller Balls (entry)
- Motorised

4

Securing Load

Locked in tracks with latches

Or tie down points - secured over the manoeuvring envelope of the aircraft

5

Bulk Cargo

- Loaded individually
- Secured using nets and floor mounted barriers

6

Mass Limitations

Limited by:
- Max. Structural mass of aircraft
- Max. area load of cargo floor
- Max. Load linearly by a given length of cargo hold floor

7

Maximum Mass

- Given in aircraft flight manual
- Operations manual if more limiting

Limits may also be printed on compartment wall

Along with dimensions of cargo zone

8

Area Load Limit

Max load that can be placed in a given area of a compartment floor

Contact with the floor will alter this significantly

Cargo may be within 1 load limit in one orientation

Always given in LxWxH

- Always go for minimising Load intensity on the floor

Area Load = Mass / Area (normally largest side)

9

Load Limit Aids

Load Spreaders
Pallets
Break load down (smaller pieces)

10

Linear Load Limit

Mass of Item / Longest Dimension

Governed by number + spacing of supporting frames and the distance from the structural bulk heads

Long item placed lengthwise will be in contact with more supporting frames

- Can't change orientation of ULDs
- Individual items can be maximised

11

Maximum Allowable Cargo Mass

Lowest of:
- Total mass in a section / cargo compartment
- Area Load
- Linear Load

12

Load Spreaders

Spread the weight across more frames, increasing the area load and support