Testing
The Yak-25-I was given callsign "yellow 15", and had a number "2" painted on the airbrake rudder. It was flown in factory testing by Anokhin between 31 October 1947 and 3 July 1948.
Flight tests followed quickly, and showed that the Yak-25 was easy to fly, and had exceptional performance and maneuverability for a straight-wing aircraft. Unfortunately it soon became clear that the laminar flow section used for the tail unit was totally unsuitable, with extremely severe buffeting setting in at 500 km/h (310 mph). Test pilot L.L. Selyakov reporting that the buffeting was so bad that he was thrown about the cockpit, banging his head on the canopy, and the needles fell off all the flight instruments. To cure the buffeting the tail unit was replaced with one using a NACA 004 aerofoil section. Worse yet, both of its rivals, the Lavochkin La-15 and rival swept-wing MiG-15 had superior performance. The Mig-15 was selected for mass production. Yakovlev was never again to build a single-engine fighter superior to the rival aircraft coming from Mikoyan, though neither was Lavochkin. Development was halted, but two of the prototypes were used for test and development purposes.
Surprisingly, the Yak-25 never received an ASCC reporting name or USAF type number despite being known to the west at the time.
Read more about this topic: Yakovlev Yak-25 (1947)
Famous quotes containing the word testing:
“Now I see that going out into the testing ground of men it is the tongue and not the deed that wins the day.”
—Sophocles (497–406/5 B.C.)
“Is this testing whether I’m a replicant or a lesbian, Mr. Deckard?”
—David Webb Peoples, U.S. screenwriter, and Ridley Scott. Rachel, Blade Runner, being tested to determine if she is human or machine (1982)
“Today so much rebellion is aimless and demoralizing precisely because children have no values to challenge. Teenage rebellion is a testing process in which young people try out various values in order to make them their own. But during those years of trial, error, embarrassment, a child needs family standards to fall back on, reliable habits of thought and feeling that provide security and protection.”
—Neil Kurshan (20th century)