"Robert Clark" wrote in message
...
On Apr 19, 4:33 am, Robert Clark wrote:
This site is an informative compendium of articles related to space
flight, and particularly space tourism:

SPACE FUTURE.http://www.spacefuture.com/home.shtml

Here's an article re-printed on the site on commercial orbital and
suborbital flights:

New Commercial Opportunities in Space.
D M Ashford
The Aeronautical Journal, February 2007.
"Of aeroplanes that have actually flown, and with the possible
exception of SpaceShipOne, the one most suitable for providing the
basis of a space tourism industry is perhaps the Saunders Roe SR.53
rocket fighter that first flew in 1957. This is probably the most
practical rocket-powered aeroplane yet built.
If it had entered service, the RAF would soon have had a mature
rocketplane with long life and rapid turnaround. With straight-forward
development, the SR.53 could have had sub-orbital performance. Indeed,
when it was cancelled as a fighter in 1958, Saunders Roe did propose a
space research
variant(17)."http://www.spacefuture.com/archive/new_opportunities_in_commercial_sp...

Note that that the example of the Saunders Roe SR.53 shows that an
aircraft can successfully operate with both rocket and jet engines.



More on the Saunders-Roe SR.53:

Saunders-Roe SR.53.
http://en.wikipedia.org/wiki/Saunders-Roe_SR.53


Bob Clark
====================================
Note that the example of the 1940s German V1 shows that an
aircraft can successfully operate with both rocket and jet engines.
http://www.battlefield-site.co.uk/V1cutaway.gif
Big hairy deal.