Aeronautics and astronautics – Aircraft structure
Patent
1981-08-31
1989-05-09
Barefoot, Galen
Aeronautics and astronautics
Aircraft structure
188268, 244119, 181208, 181290, B64C 106
Patent
active
048282022
ABSTRACT:
A method and apparatus for damping the vibration of a reinforced skin structure (e.g., the fuselage of an aircraft) over a wide frequency range (wideband) in order to reduce the vibration and transmitted noise, and improve the sonic fatigue life, of the structure is disclosed. Wide range damping is accomplished by viscoelastically attaching constraining elements, which can be continuous or segmented, to the skin and to the reinforcing members that support the skin. The viscoelastic attachment between the constraining elements and the reinforcing members directly damp the vibrations of the reinforcing members; and, the viscoelastic attachment between the constraining elements and the skin directly damp the vibrations of the skin. Further, the regions of the constraining elements extending between the regions viscoelastically attached to the reinforcing members and to the skin forms a coupling that allows the skin viscoelastic attachment to indirectly damp the vibrations of the reinforcing member and vice versa. Resonant vibrations due to skin bending, torsional and extensional modes (both cylindrical and panel) and reinforcing member bending, torsional, extensional and tuning fork modes, are all damped.
REFERENCES:
patent: 2097597 (1937-11-01), Pavlecka
patent: 2233960 (1941-03-01), Woods
patent: 2233969 (1941-03-01), Woods
patent: 2304718 (1942-12-01), Swarl
patent: 2412838 (1946-12-01), Shores
patent: 2427853 (1947-09-01), Goodlett
patent: 2819032 (1958-01-01), Detrie et al.
patent: 2877970 (1959-03-01), Albertine et al.
patent: 3020986 (1962-02-01), Kirk et al.
patent: 3029910 (1962-04-01), Kirk et al.
patent: 3029914 (1962-04-01), Macomber
patent: 3058704 (1962-10-01), Bergstedt
patent: 3071217 (1963-01-01), Gould
patent: 3078969 (1963-02-01), Campbell et al.
patent: 3078971 (1963-02-01), Wallerstein, Jr.
patent: 3079277 (1963-02-01), Painter
patent: 3080022 (1963-03-01), Mote
patent: 3087571 (1963-02-01), Kerwin, Jr.
patent: 3087573, Ross
patent: 3087574 (1963-04-01), Watters
patent: 3088561 (1963-05-01), Ruzicka
patent: 3101744 (1963-08-01), Warnaka
patent: 3127213 (1964-03-01), Klaasen
patent: 3142610 (1964-07-01), Lowe
patent: 3159249 (1964-12-01), Lazan
patent: 3160549 (1964-12-01), Caldwell et al.
patent: 3262521 (1966-07-01), Warnaka
patent: 3314502 (1967-04-01), Thorn
patent: 3327812 (1967-06-01), Lazan
patent: 3386527 (1968-06-01), Daubert et al.
patent: 3401907 (1968-09-01), McDermott
patent: 3419111 (1931-12-01), Jones et al.
patent: 3467572 (1969-09-01), Ahramjian
patent: 3554855 (1971-01-01), Oberst et al.
patent: 3601228 (1971-08-01), Nashif
patent: 3605953 (1971-09-01), Caldwell et al.
patent: 3817356 (1974-06-01), Dahlquist
patent: 3827530 (1974-08-01), Heath
patent: 3842945 (1974-10-01), Potter
patent: 3872950 (1975-03-01), Ashfield
patent: 3904553 (1976-02-01), Hawkins
patent: 3976269 (1976-08-01), Sen Gupta
patent: 4012549 (1977-03-01), Slysh
patent: 4014148 (1977-03-01), Harter
patent: 4096307 (1978-06-01), Lagowski
patent: 4097193 (1978-06-01), Brunsch et al.
patent: 4230293 (1980-10-01), Hamm et al.
patent: 4313524 (1982-02-01), Rose
Jacobs Loyd D.
SenGupta Gautam
Spain Byron R.
Barefoot Galen
The Boeing Company
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