FLUTTER TEST OF AN ARRAY OF FULL-SCALE PANELS FROM THE SATURN S-IVB STAGE AT TRANSONIC MACH NUMBERS
Technical rept. 24 Aug-6 Nov 1967
ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN
Pagination or Media Count:
Flutter characteristics of a 30-deg segment of the full-scale Saturn S-IVB stage were obtained at Mach numbers from 1.30 to 1.60 for various combinations of axial-compressive loads and panel differential pressures. Flutter was encountered in one or more panels when sufficient axial load was applied to either partially or completely buckle the panels. The flutter was amplitude limited, and no structural failures occurred on any of the panels as a result of flutter. However, the test had to be terminated when two panels in the fifth bay were statically buckled beyond their elastic limit and permanent deformation resulted. A calibration test was conducted prior to the flutter test to determine the optimum design of the fixture used to support the model. Also static-pressure and boundary-layer surveys were made on the model at tunnel conditions comparable to those of the flutter phase.
- Ground Support Systems and Facilities for Space Vehicles