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Pressurizing/Temperature Controlling Cargo A/C  
User currently offlineAirplanenut From United States of America, joined Sep 2001, 658 posts, RR: 0
Posted (7 years 3 months 2 weeks 1 day 16 hours ago) and read 2065 times:

Hi,

I was wondering if anyone knew whether cargo aircraft are pressurized or temperature controlled outside the cockpit. It seems like it would be costly to pressurized the cargo, but at the same time, if an animal is being shipped, it might appreciate the oxygen.

Thanks,

Jeremy


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9 replies: All unread, jump to last
 
User currently offlineFI642 From Monaco, joined Mar 2005, 1079 posts, RR: 2
Reply 1, posted (7 years 3 months 2 weeks 1 day 16 hours ago) and read 2066 times:

Pressurized and temperature controlled. Most Freighters are converted passenger aircraft.


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User currently offlineAirplanenut From United States of America, joined Sep 2001, 658 posts, RR: 0
Reply 2, posted (7 years 3 months 2 weeks 1 day 16 hours ago) and read 2036 times:

What about aircraft that have always been dedicated freighters, such as the 744F or 752PF? Same systems?


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User currently offlinePanHAM From Germany, joined May 2005, 9446 posts, RR: 30
Reply 3, posted (7 years 3 months 2 weeks 1 day 16 hours ago) and read 2023 times:

Of course. The differnence between and pax and a cargo airliner are the freight door and the strenghtened floor.

Not only might the animals shipped "appreciate" the oxygen, the crew who might need to go and inspect the cargo section does as well. Not speaking of horse grooms who usually travel with their valuable freight. Besides, there is delicate freight which requires to be shipped in a pressurized environment.

The 747 freighters have seats in the bubble and Cargolux did even sell these at times to freight forwarders and good customers.



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User currently offlineAirplanenut From United States of America, joined Sep 2001, 658 posts, RR: 0
Reply 4, posted (7 years 3 months 2 weeks 1 day 15 hours ago) and read 2013 times:

Thanks for the info  Smile


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User currently offlineAA737-823 From United States of America, joined Mar 2000, 5849 posts, RR: 11
Reply 5, posted (7 years 3 months 2 weeks 1 day 15 hours ago) and read 1997 times:

Yes, they're fully pressurized and heated, as people have said above.
What people have NOT pointed out yet is that you can't pressurize the cockpit without also pressurizing the rest of the aircraft- it would blow apart. Now, you can set the back of the plane (or lower decks as on my 747 freighters) for a far cooler temperature if you like, but you typically run all packs in flight. Unless one goes INOP on you, then you MEL it to home base and call it a day!


User currently offlineAcey559 From United States of America, joined Jan 2007, 1535 posts, RR: 2
Reply 6, posted (7 years 3 months 2 weeks 1 day 15 hours ago) and read 1983 times:

I was watching an aviation DVD of Atlas Air and they were talking about how they sometimes have flowers and need to have the temperature very low, almost like a refrigerator. I'm sure there are other reasons requiring hot or cold temps, like vaccinations, etc.

User currently offlineSDF880 From United States of America, joined Apr 2007, 130 posts, RR: 0
Reply 7, posted (7 years 3 months 2 weeks 1 day 15 hours ago) and read 1961 times:

Some of our classic 747's have one of the three air conditioning packs deactivated. No problem as the plane can still operate OK on 2. Cost saving measure I guess.

SDF880

[Edited 2007-06-20 19:08:18]

User currently offlineTod From Denmark, joined Aug 2004, 1727 posts, RR: 3
Reply 8, posted (7 years 3 months 2 weeks 1 day 14 hours ago) and read 1951 times:

Quoting Airplanenut (Reply 2):
What about aircraft that have always been dedicated freighters, such as the 744F or 752PF? Same systems?

The air distribution and temp control systems on 747F models is a simplified version of the pax models.

Additional forward lower deck bleed air heating is added to compensate for the reduced heat coming from the e/e bay cooling system.

The lav is vented directly overboard instead of being ducted to the outflow valves near the back of the plane.

The supplemental air system that pumps recycled air into the main mix manifolds is deleted.

Tod


User currently offlinePanHAM From Germany, joined May 2005, 9446 posts, RR: 30
Reply 9, posted (7 years 3 months 2 weeks 1 day 14 hours ago) and read 1930 times:

Quoting Acey559 (Reply 6):
have the temperature very low, almost like a refrigerator. I'm sure there are other reasons requiring hot or cold temps, like vaccinations, et

That is usually such small quantities, its packed in dry ice. Alternately it goes into temperature controlled containers. Like other cargoes as well.

Having a full load of flowers indeed asks for lower temperature in the cabin.



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