Accession Number : AD0475565


Title :   STATIC STABILITY CHARACTERISTICS OF THE ALARR PAYLOAD AND THE EFFECT OF THE WAKE ON THE BALLUTE DECELERATOR CHARACTERISTICS AT TRANSONIC SPEEDS


Descriptive Note : Technical rept.


Corporate Author : ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN


Personal Author(s) : White, Warren E ; Brice, Travis R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/475565.pdf


Report Date : Dec 1965


Pagination or Media Count : 35


Abstract : Drag data were obtained at Mach numbers 0.5, 0.8, and 1.2 for the ballute decelerator in the wake of the payload of the Air Launch Air Recovery Rocket (ALARR). Two model sizes of the ALARR payload were tested at angles of attack of 0 and 20 deg placed at 2, 3, 4, 5, and 6 payload diameters forward of the decelerator. The decelerator remained at zero angle of attack. The wake influence of the larger payload reduced the drag of the decelerators, both at 0- and 20-deg angles of attack. In addition, static stability characteristics were obtained on the ALARR payload for a Mach number range from 0.5 to 1.5 and an angle-of-attack range from -4 to +22 deg. To maintain static stability the center of gravity cannot move more than 29% of the model length aft of the nose.


Descriptors :   *DROGUE PARACHUTES , *SOUNDING ROCKETS , ANGLE OF ATTACK , DRAG , EXPERIMENTAL DATA , FLOW FIELDS , MODEL TESTS , MOMENTS , PAYLOAD , PERFORMANCE(ENGINEERING) , PITCH(MOTION) , SCHLIEREN PHOTOGRAPHY , SEPARATION , STABILITY , TRANSONIC CHARACTERISTICS , WAKE , WIND TUNNEL MODELS


Subject Categories : Gliders and Parachutes
      Fluid Mechanics
      Unmanned Spacecraft


Distribution Statement : APPROVED FOR PUBLIC RELEASE