CABLE TO DIRECTOR FROM [DELETED] RE FLIGHT NUMBERS 17 AND 18 FLOWN AND BOTH WER

Created: 6/29/1962

OCR scan of the original document, errors are possible

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TORI 0 JUN 62

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EYES ONLY MR CUNNINGHAM, MR PARANGOSKI FROM COL NELSON

FLIGHTS NUMBERSNDLOWN TODAY. DOTH WERE PRIMARILY FURTHER INVESTIGATION OFUFFETT PROBLEM. FLIGHT NUtfflER

AS AS FOLLOWS I TOTAL FLIGHT TIMEi ONE HOUR FIVEAKE-OFF0 LOCAL0 POUNDS, CC AT2 PERCENT MAC, PILOT MR PARKS. TAKE-OFF IN AO WITH WATER. CLIMB IN AD TOHOUSAND FEET , CLIM3EAS FROMOHOUSAND FEET, WITH SPEED GRADUALLY REDUCING CLIMBING TOHOUSAND. NOsE WAS LOWERED TO ACCELERATE, DESCENT MADE TOHOUSAND. CLIMB AGAIN STARTEDEAS ATHOUSAND WITH LEVEL OFF ATHOUSANDEAS. DUFFETT ENCOUNTERED AT73 MACH. AT THIS POINT LETT A3 BLEW OUT, AND CONSIDERABLE COMPRESSOR STALL WAS ENCOUNTERED, DOTH THROTTLES RETARDED TO DECELLERATE, PILOT EXLIEVES BOTH ENGINES

WERE COMPRESSOR STALLING. MOV ING THROTTLES FORWARD AGAIN BROKE THE STALLS ON DOTH DURING THIS INCIDENT THE PILOT NOTED VERY GOOD REACTIONS ON PART OF STABILITY ANUMENT AT ION SYSTEM.

TOP RELEASE DATE: 7

.

IN TWO

ONE DECREE OF YAW VAS NOTED MOMENTARILY, THEN DAMPENED OUT. NO NOTICEABLE PITCH OR ROLL MOVEMENTS NOTED. DESCENT WAS MADE TO TEN THOUSAND WHERE STEP INPUTS TO ROLL PITCH AND YAW AXES WERE MADE. AUGMENTATION SYSTEM REACTIONS WERE EXCELLENT. NORMAL LANDING WAS MADE WITHOUT DRAG CHUTE,|

NOTS. PILOT NOTED THAT BEST BRAKING TECHNIQUE APPEARS TO BE

A STEADILY INCREASING APPLICATION OF BRAKING COINCIDENT WITH DECREASING

AIRSPEED. AIRCRAFT SHUT DOWN WITH NO MALFUNCTIONS TO BE CORRECTED

FOR TURNAROUND. FLIGHT NUMBER IS WAS ESSENTIALLY As FOLLOWS!

TOTAL TIMEINUTES. TAKE-OFF AT0 LOCAL0 POUNDS,

CG AT2 PERCENT MAC IN AB WITH WATIR. PILOT MR.

SHALK. CLIMB MADE TOHOUSANDEAS. DAMPERS WERE TURNED

OFF FOR SOME SUPERSONIC UNDAMPENED LATERAL AND DIRECTIONAL PULSE

CHECKS. SOME YAWING AND ROLLING MOMENT WAS NOTICEABLE, WITH

PITCH NO PROBLEM. STABILITY AUGMENTATION WAS TURNED BACK ON AND

AIRCRAFT ACCELERATEDACH. BYPASS DOORS WERE OPENED.

CLIMB MADEACH TOHOUSAND AND ACCELERATED1 MACH

WITH BY PASS DOORS REMAINING OPENED. NO BUFFETT INC OR SHAKING

WAS EVIDENT AT ALL IN THIS CONDITION. THIS VERY INTERESTING AS

IT INDICATED THAT OUR PROBLEM HAS BEEN RELATED TO PRESENT ENGINE

INSTALLATION WITH FIXED SPIKE AND PROBABLY IS NOT AN AIRFRAME EFFECT.

DESCENT WAS MADE TOHOUSAND WHERE EMERGENCY GEAR EXTENSION WAS

COMPLETED. NO RE PET TT ION OF INADVERT ANT DAMPER SHUTDOWN WAS NOTED,

NTHREE

DESCENT WAS MADE FOR LANDING. LANDING WAS NORMAL, NO CHUTE, ROLLOUT

PILOT CONCURS WITH PREVIOUS FLIGHT IN THAT BRAKINGIS BEING DEVELOPED THAT SHOULD PRECLUDE CLOW ING OF TIRES AS HAS BEEN OCCUR ING ON MANY PREVIOUS FLIGHTS. AIRCRAFT LANDED IN COMMISSION. NEXT FLIGHT TENTATIVELY SCHEDULED FOR AFTERNOONXY.

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