Two rocket nozzles, two stages in the construction of the same engine model: The engine on the left has the cooling tubes drilled through the throat; the one on the right has had the turbopump feed and combustion chamber welded on. Once I realized it's all straight holes, the whole thing was quite obvious to me - ingenious, certainly! but also clearly understandable.

The Museum office and mailing address is:
Ira G. Ross / Niagara Aerospace Museum
2221 Niagara Falls Blvd. Suite 7
Niagara Falls, New York 14304-1696
716-297-1324 - Phone
716-297-1366 - Fax

Web: http://wnyaerospace.org/
E-mail: info@wnyaerospace.org