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Quoting A342 ( Reply 10 ): That seems to be nothing more than an artist's impression. Well, obviously nobody has built it...what would there be other than an artist's impression? Quoting A342 ( Reply 10 ): IMO nobody would seriously suggest 747-derived fuselages. Somebody *did* suggest it...I really have no idea on how serious they were, though. I think it was a thought experiment on "what would it look like if we wanted to...

The j/s was probably quicker and easier or more expensive than the D/H. Thanks for your help I'm sure they appreciated it.

DocLighting, Unfortunately I can't tell you any other name. I used this term when describing to foreign doctors. Pseudo erosion means that it is not a wound, which would be erosion, but a condition, the nature of which is such that the cells normally found inside the womb are also found in cervix. So, basically the inner part of the womb is "prolonged" to the cervix, that is. I studied FAA Medical Certificate Class 1...

Quoting Mir ( Reply 22 ): Quoting CosmicCruiser (Reply 18): Not sure I follow you on that but you do need clearance to cross any runway in the US. You don't need specific clearance - a simple taxi clearance without a mention of a hold-short is enough. In other words, clearance to cross is assumed unless stated otherwise. That's not the case in some other countries, where a hold short is assumed unless stated otherwise. -Mir Bad...

Quoting FLY2HMO ( Reply 43 ): Listening to my scanner often while pretending to read back and flying to busy places really made me good at radio calls. Heck, many times (specially out by SoCal) I was the one that had to jump in for my instructor falling behind on the radios. My check pilots always complimented on my calls as well. Sounds exactly like my story   Jimbo

Quoting Keta ( Reply 4 ): If the need is for oversize cargo, blimps could play a role rather than huge planes... Also, blimp/helo hybrids. Use rotors to lift more than just the blimp can carry.

I'd go as far as to say probably not in my lifetime. Then again, I'm barely over a 1/4 century old... with the way population is growing worldwide the need for a uber-duper-super-jumbo just might come sooner than we think.

Quoting Longitude ( Reply 21 ): Do they contradict figures we mentioned at the beginning of this thread? I'm not sure, but I think they contradict the way we usually measure those values. I don't have any sources measuring the radiation exposure in Röntgens. The figures you provided seem high given the usual measures, unless they're only measuring cosmic radiation exposure at both ground levels and at altitude, and ignoring...

Quoting Longitude ( Reply 10 ): why the radiation doses are less on the Equator The Earth's magnetic field captures radiation from space and diverts it towards the poles. Think about how your compass works: somewhat imaginary "lines of magnetic flux" emanate out of the Earth at the north pole and point towards the south pole. The magnetic needle in the compass aligns itself with these lines so it always points towards the north...

Here's a report you can download (pdf) with a long list of references that cover the whole topic of atmospheric ionizing radiation with the various health implications. http://hdl.handle.net/2060/20030014808 from the NASA reports server. Overview of Atmospheric Ionizing Radiation (AIR) Research: SST - Present by Wilson, J. W.; Goldhagen, P.; Rafnsson, V.; Clem, J. M.; DeAngelis, G.; Friedberg, W. World Space Congress 2002, FROM, 10-19...