Saturday, December 04, 2010

OMG, a flying Pogo on a stick! (updated)




As y'all know, I like tail-sitting VTOL aircraft and in particular the Convair XFY-1 Pogo (see my flying version here).  Scott Lowther just posted about NASA LaRC's rocket-powered aerodynamic testing of the Pogo.  As noted, this was a common technique prior to the proliferation of computers and CFD.  I have photos of similar test items from NASA Wallops.

From a A new Direction - Wallops Island Flight Test Range The First Fifteen Years pp 361-362 (of the original doc, pages will vary online and in the pdf):
  • The tests were run because  it was anticipated that the Pogo would go transonic in horizontal flight.
  • Starting in June 1951, four test models were flown prior to the first flight of the airplane.
  • Deacon booster; 0.133 scale models, tested to Mach 1.2.
  • Three of four flights were successful, some with and some without the counter rotating propellers (ack, I already forget whether there were two or only one with).
  • The 2' propellers reduces static stability and free-wheeled at 10K rpm.
  • The following photo shows tech Ed Matthews and was taken on Oct. 26, 1953