The Origin and Distribution of Supersonic Store Interference From Measurement of Individual Forces on Several Wing-Fuselage-Store Configurations 4. - Delta-Wing Heavy-Bomber Configuration With Large Store. Mach Number, 1.61 Page: 3 of 128
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2 * * "* * *" * ** * NACA RM L551I27a
INTRODUCTION
At transonic and supersonic speeds, research on external stores and
nacelles has shown that interference between the various components may
incur large performance penalties (ref. I). However, very little force
breakdown data have been obtained from which the problem of store inter-
ferences might be understood. In order to furnish such information, a
detailed experimental investigation of store interference has been under-
taken in the Langley 4- by 4-foot supersonic pressure tunnel. Reference 2
describes in detail the investigation and presents the first phase of the
program which includes store tests made in the presence of a 450 swept
wing.
The results of store tests in the presence of a 600 delta-wing-
fuselage combination at a Mach number of 1.6 are presented herein and
include the aerodynamic characteristics of the semispan model (four com-
ponents) and the individual forces and moment (five components) on the
store. The semispan wing-fuselage model and store simulate a delta-wing
heavy-bomber configuration with a large external store (a body of revo-
lution having an equivalent frontal area of a twin-engine nacelle with
no provision for internal flow). As in reference 2, the data are pre-
sented with a somewhat limited analysis in order to expedite publication.
SYMBOLS
Drag
CDwf drag coefficient of wing-fuselage combination, Drag
wf qS
CL lift coefficient of wing-fuselage combination, Lift
W' fqS
C pitching-moment coefficient of wing-fuselage combination
about0.25, Pitching moment
about 0. 625c,
qSc
C wing bending moment of wing-fuselage combination,
wf Bending moment
qs-
2
Drag
CDs drag coefficient of store,
s QF
CD base drag coefficient of store, PB A
Bs s F
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Morris, Odell A. The Origin and Distribution of Supersonic Store Interference From Measurement of Individual Forces on Several Wing-Fuselage-Store Configurations 4. - Delta-Wing Heavy-Bomber Configuration With Large Store. Mach Number, 1.61, report, December 15, 1955; (https://digital.library.unt.edu/ark:/67531/metadc52900/m1/3/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.