AviationWeek, 21 May 2012
http://www.aviationweek.com/Article.aspx?id=/article-xml/AW_05_21_2012_p25-458597.xml&p=1
Piece by piece, parts of the puzzle that may conceivably drive down costs to as low as $300,000 per launch, are falling into place, according to hypersonic researchers at Boeing. Building on these pieces, the company has unveiled a small launch vehicle (SLV) concept aimed at the smallsat market, and it could be in service as early as 2020.
