An interesting response

[Ronn! Blankenship]

At 05:34 PM Monday 5/5/2008, Dan M wrote:



>The more substantial point involves the maximum speed achieved by piloted
>planes over about the last 60 years.
>
>1947    312
>1968    925
>1990    1000
>2008    1000



There is obviously some additional modifier missing here, since even 
if the X-15 is disqualified since it used a rocket engine rather than 
an air-breathing engine, the SR-71 is still considered a jet aircraft 
(even if it uses exotic fuel) and is piloted 
(<http://en.wikipedia.org/wiki/Eldon_W._Joersz>).


. . . ronn!  :)