Stress-free dome mount missile design

Details Stress-free dome mount missile design Stress-free dome mount missile design

1996-04-08

1998-12-29

Grant, William

Aeronautics and astronautics

Aircraft structure

Fuselage and body construction

244 316, 2441293, 244131, 102293, B64C 114, B64D 4708

Patent

active

058531491

ABSTRACT:
A missile having an improved dome mounting arrangement, and a method for mounting a sapphire dome to a titanium missile turret that provides for minimum surface deformation and environmental sealing of the dome. A sealing material such as silicone rubber compound that is capable of enduring high temperatures attained during high speed missile flight is employed. The missile has a body with a nose and the dome mounting arrangement is attached to the nose. The dome mounting arrangement comprises a turret secured to the nose, the dome, and a retainer ring attached to the turret for securing the dome to the turret. An annular gap is formed between an outer surface of the dome and an inner surface of the retainer ring. The silicone rubber compound is disposed in the annular gap and cured to seal the dome. A plurality of shims may be disposed between the dome and the turret in a radial gap formed therebetween. A plurality of shims may also be disposed between the dome and the retaining ring around the periphery of the dome during assembly, so that the dome rotates freely after shimming. This ensures that the dome is stress-free during and after curing of the silicone rubber compound. The shims are removed after the silicone rubber compound no longer flows. The silicone rubber compound is cured for high temperature performance by curing for four hours, minimum, at room temperature, and then curing for two hours, minimum, at 160.degree..+-.10.degree. F., and then curing at 260.degree..+-.10.degree. F. for 30 minutes, minimum, and then curing them at 360.degree..+-.10.degree. F. for 30 minutes, minimum. Finally, the compound is cured at 400.degree..+-.10.degree. F. for 30 minutes, minimum, and then cooled to room temperature.

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patent: 4011819 (1977-03-01), Kessler
patent: 5129990 (1992-07-01), Binnie, Jr. et al.
patent: 5404814 (1995-04-01), Fisch et al.

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