Quote:
Originally Posted by Revi16
Isn't your last photo the V1? If so, that's probably where they learned that they needed a stall strip.
|
Bingo! Of-course. Yes it is.
Photos of the V2, all later pre-production aircraft, and all production aircraft have the stall strip installed.
The book with the stall strip photo is the Monogram Monarch 2 [1983/1997] (Smith, Creek and Hitchcock.)
The [2006] Smith, Creek (with Roletschek) book notes that the stall strip was first test flown on 19 Dec 43 (Flight 24) with Quenzler at the controls.
Karl-Heinz Regnat's [2003] book states:
"Dieterle reported that the aircraft's (V1) stalling characteristics were unpredictable, with no warning of an impending stall." After the stall strips were installed everything got better.
The Ta-152H had 3-degrees of washout to address this problem. (Essentially, the wing was twisted. At the wing root the center of the leading edge was 3-degrees above the airflow, but at the wing tips the center of the leading edge was 0-degrees to the airflow. As a result, at any angle of attack, the wing root would stall before the wing tips.) The impressive wing span and high aspect ratio of the wings demanded this ingenious and elegant solution.
Bronc