"Iain Young" wrote in message
...
According to the launch schedule at:

http://www.spaceflightnow.com/tracking/index.html the first flight
of the Delta-IV Heavy has slipped to "Mid October".

I went surfing to see if I could find out any details on why the
flight slipped, but couldn't find much. I did find a "Delta-IV Heavy
First Flight" page at:

http://www.boeing.com/defense-space/...y/sitemap.html

One of the PDFs linked from this site is this little gem:


http://www.boeing.com/defense-space/...th_options.pdf


Some really good info.
Thank you very much.

If Boeing follows through on this there is no need for any Shuttle derived
or clean sheet approach Heavy lift.

Simply put, the RS-68B is indeed an upgraded version of the RS68,
with the RS-68 Regen being a RS-68 with a regenerative nozzle.

'Dens' was indeed Cryo Propellant Densification. Al-li is
Aliminium Lithium Lightweight material.

One thing I did find interesting is that Boeing are at least looking
at upto 6.5M payload fairings with pad mods.

Killer Size.
Combined with Bigelow's inflatables it allows very big structures.
Based on that 9 meter payload fairings could be possible on the next
generation version.

The RS-800 seems to be a paper engine at present (Althugh, I guess they
know how powerfull they want/need it to be)

I am guessing just based on model number 800,000 pounds of thrust at sea
level.


The AUS referenced would appear to be a similar spec to the MB-60,
which according to
http://www.boeing.com/defense-space/...opul/mb60.html
should be avaliable 'now'.

It is very hard based on my experience to find any good info on when it will
actually launch.