atmoshperic pressure and temperature ranges
Category: Science > Physics
Asked by: detail-ga
List Price: $10.00
02 Apr 2006 09:57 PDT
Expires: 02 May 2006 09:57 PDT
Question ID: 714638
what is the typical atmosperic range and temperature range for an airlines cargo hold to experience when flying from the USA to ASIA ? I need to define a product spec.
|There is no answer at this time.|
Re: atmoshperic pressure and temperature ranges
From: marcusl-ga on 04 Apr 2006 15:00 PDT
Cargo hold will have the same atmospheric pressure as the passenger cabin, about 75kPa, or 3/4 that of sea level. The temperatures inside the cabin hold are not controlled in most airliners. They generally have a large deal of mass in terms of the cargo being carried, this cargo is generally assumed to be around the temperature of the departing airport. It's thermal mass combined with thermal pollution from the temperature controlled sections of the plane will generally come close to cancelling the effects of the extreme cold outside the aircraft at high altitudes for anything but the longest of flights. Airlines list guidelines for shipping live animals in cargo holds based solely on the temperatures at the departure airport and the arrival airport for mostly domestic flights. Pharmaceutical companies have temperature validation procedures for their shipments. temps are checked periodically enroute and verified. Modern airliners all have temp sensors in the cargo holds, and they rarely go below freezing temperature due to the heat leak from passenger sections. Overheating will not be an issue.
If you feel that you have found inappropriate content, please let us know by emailing us at firstname.lastname@example.org with the question ID listed above. Thank you.
|Search Google Answers for|