Zero-Lift Drag of the Chance Vought Regulus II Missile at Mach Numbers Between 0.8 and 2.2 as Determined From the Flight Tests of Two 0.12-Scale Models: TED No. NACA AD 398 Page: 2 of 17
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NASA Technical bra
NACA RM SL54H02 3 1176 01438 6230
NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS
RESEARCH MEMORANDUM
for the
Bureau of Aeronautics, Department of the Navy
ZERO-LIFT DRAG OF THE CHANCE VOUGHT REGULUS II MISSILE AT
MACH NUMBERS BETWEEN 0.8 AND 2.2 AS DETERMINED FROM THE
FLIGHT TESTS OF TWO 0.12-SCALE MODELS
TED NO. NACA AD 398
By James D. Church
SUMMARY
Two noninstrumented 0.12-scale models (with internal flow) of the
Chance Vought Regulus II missile were flight tested to investigate drag
characteristics of the missile for a range of Mach numbers from 0.8
to 2.2. Measured total-drag-coefficient data were reduced to external-
drag-coefficient data by using qualitative estimates of internal and
base-drag coefficients. Both the total drag as measured on the two
models, the external drag of the present tests, and some unpublished
preliminary wind-tunnel test data show that differences in the drag
level occurred for a range of supersonic Mach numbers between 1.3
and 2.0. These differences in the drag, believed to be caused by the
additive drag characteristics of the inlet, leave the exact drag level
of the configuration investigated in question.
INTRODUCTION
At the request of the Bureau of Aeronautics, Department of the
Navy, the National Advisory Committee for Aeronautics has made an
investigation of the drag characteristics near zero lift of the Chance
Vought Regulus II missile (XRSSM-N-9). This drag investigation utilized
two 0.12-scale rocket-boosted models, which were flown in the speed
range proposed for the full-scale missile. These flight tests were
conducted at the Langley Pilotless Aircraft Research Station at Wallops
Island, Va.
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Church, James D. Zero-Lift Drag of the Chance Vought Regulus II Missile at Mach Numbers Between 0.8 and 2.2 as Determined From the Flight Tests of Two 0.12-Scale Models: TED No. NACA AD 398, report, July 27, 1954; (https://digital.library.unt.edu/ark:/67531/metadc60679/m1/2/: accessed March 28, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.