CABLE TO DIRECTOR FROM [DELETED] RE THE PRIMARY OBJECTIVE WAS TO INVESTIGATE TA

Created: 6/27/1962

OCR scan of the original document, errors are possible

actwii, ) MJI

TORi 7 JUN 62

NO NJTE ACTION

EYES ONLY KR KIEFER, COL BEERLI, AND MR PARANG OS KY

FLICRTIRBORNE TODAY JUNEDT, THE FLIGHT LASTEDINUTES, THE PRIMARY OBJECTIVE HAS TO INVESTIGATE TAD-VIBRATIONEAS0 FEET, THE INSIDE OF BOTH VERTICAL TAILS AND THE TOP SURFACES OF THE NACELLES HAVE BEEN TUFTED AND

MOVIES ARE BEING TAKEN DURING FLIGHT TO DETERMINE IF AND WHEN SEPARATION OCCURS AND ITS APPARENT COURSES.

TAKE OFF WAS MADE ON A3 AND WATER0 POUNDS ANDEET OF RUNWAY, THE AIRCRAFT WAS CLIMBED0 FEETEVEL FLIGHT RUN WAS MADEEAS. THIS WAS FOLLOWEDEVEL FLIGHT RUNEAS0 FEETEAS0 FEET. THERE WERE NO NOTICEABLE EFFECTS ON THE TAIL. THE AIRCRAFT WAS THEN CLIMBED0 FEETEAS. NO EFFECTS WERE NOTICED0 FEET AND M.AS REACHED AT WHICH TIME THE AIRCRAFT STARTED TO VIBRATE. THE VIBRATION INCREAS-

FOR RELEASE DATE: 7

SECRET

g r

in 4two

ed in intensity as the aircraft climbed0 and reached the aircraft was then decelerated and several sAS gain checks were run, however, the air was so rough it was felt to de fruitless to continue flying so the flight was terminated.

the main thing learned to date is that the problem is associated directly with mach number and islutter problem* we will keep you informed As more info becomes available0

flights scheduled fordt juneor further inves-

of this problem. theill be at

for flushing and crew briefing

nd xt well then return to castle afb until the week of july 9th, during which it will be availableefueling sorties with

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