tonytech2,
NACA Langley investigated the movable horizontal stabilizer in 1942/3.
See this link
Fact Sheets : Curtiss XP-42 : Curtiss XP-42
Later, NACA insisted that the Bell XS-1 feature a movable horizontal stabilizer.
Ciarain.
Last edited by Kieron Kirk; 7th Jan 2009 at 21:58.