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Question regarding transport of goods using aircraft.
20
votes
Accepted
Are there items bigger than an aircraft section transported by air today?
When you are not restricted by the size of a cargo hold, your cargo can become much bigger. See below how a Mil-26 lifts the fuselage and wing root of a Tu-134. …
10
votes
Accepted
Can fuel sloshing in the tanks cause a stall?
The answer is no, but some shifting of the center of gravity (c.g.) due to attitude is unavoidable.
Tanks are subdivided so the c.g. shift within a single tank is small. You can notice the sloshing a …
19
votes
Do any aircraft carry boats?
The Fernic T-9 of 1929 was prepared for an Atlantic crossing and as a precaution had removable upper engine nacelles which could double as a life raft, including an outboard engine.
A less planned …
7
votes
How many active large commercial airplanes are there?
There are a few airplanes which start their life as cargo aircraft, but most are converted from old passenger aircraft. … Also, cargo aircraft should be more numerous; again my utilization is on the high side, I guess. But I would be surprised if there are more than maybe 800 big cargo jets in operation worldwide. …
12
votes
Do Cargo flights carry anyone other than the crew?
It has a large cargo door at the rear fuselage for loading freight containers.
Humanitarian relief flights have an obligation to carry journalists along if they wish. …
96
votes
Accepted
Why do aircraft models end their life as freighters?
Passenger operations are overwhelmingly scheduled whereas cargo is on demand and thus less easy to plan. The upside: A cargo plane crew will fly quite diverse routes. … Cargo operators have no such incentive to prefer the newest airplanes; they profit from the need of passenger airlines to sell their older hardware off. …
13
votes
Accepted
Why do cargo aircraft still have floors?
Because most cargo aircraft are derived from passenger aircraft. All dedicated cargo designs have no extra floor: They carry the payload on the fuselage bottom structure. … The C-5 and C-17 are dedicated military cargo designs and their round bottom is not only for aerodynamics, but also to fair the structure needed for carrying the cargo floor bending moments. …
5
votes
Top loading an Aircraft vs bottom Loading
If the load is meant to be released during flight, hanging it below the airplane is much preferred to ease separation. Bombs, fuel tanks and missiles are almost always mounted below, with the notable …
29
votes
Why are there no cargo aircraft with "flying wing" design?
Cargo aircraft (outside the military) almost always started life as passenger aircraft. The ratio of active large cargo aircraft to passenger aircraft is in the single percentages. … Especially for cargo, large flying wings have been proposed which store their cargo in containers along the wingspan - hence their name: Spanloaders. Below is an artist impression from the 1970s. …
3
votes
Why are aircraft not equipped with nose cargo doors when being converted from passenger to c...
In cases where a conventional airframe needed wide open access to its cargo hold, the tail would be made removable. …