WO1999010237A3 - System and method for increasing the durability of a sapphire window in high stress environments - Google Patents

System and method for increasing the durability of a sapphire window in high stress environments Download PDF

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Publication number
WO1999010237A3
WO1999010237A3 PCT/US1998/017072 US9817072W WO9910237A3 WO 1999010237 A3 WO1999010237 A3 WO 1999010237A3 US 9817072 W US9817072 W US 9817072W WO 9910237 A3 WO9910237 A3 WO 9910237A3
Authority
WO
WIPO (PCT)
Prior art keywords
plane
dome
planes
positive
missile
Prior art date
Application number
PCT/US1998/017072
Other languages
French (fr)
Other versions
WO1999010237A2 (en
Inventor
James H Gottlieb
Original Assignee
Raytheon Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/914,842 external-priority patent/US6123026A/en
Application filed by Raytheon Co filed Critical Raytheon Co
Priority to JP11514374A priority Critical patent/JP2001502045A/en
Priority to CA002267562A priority patent/CA2267562A1/en
Priority to AU16979/99A priority patent/AU1697999A/en
Publication of WO1999010237A2 publication Critical patent/WO1999010237A2/en
Publication of WO1999010237A3 publication Critical patent/WO1999010237A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
    • B64G1/00—Cosmonautic vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/38—Range-increasing arrangements
    • F42B10/42—Streamlined projectiles
    • F42B10/46—Streamlined nose cones; Windshields; Radomes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
    • B64G1/00—Cosmonautic vehicles
    • B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
    • B64G1/24—Guiding or controlling apparatus, e.g. for attitude control
    • B64G1/36—Guiding or controlling apparatus, e.g. for attitude control using sensors, e.g. sun-sensors, horizon sensors

Abstract

A dome assembly (50) adapted for use with a missile (32) having a longitudinal axis (42) parallel to a thrust vector thereof. The inventive dome (50) includes a sapphire crystal (30) having a crystallographic structure that includes positive n-planes (12), positive r-planes (14) and a c-plane (16). A surface around a missile sensor provides a place for mounting the crystal (30, 50) such that one of said positive r-planes faces leeward with respect to wind flow (36) that impinges on said missile (32) during missile flight. The projection of one of the positive r-plane normals onto the wind flow vector (36) points aft. By design at nominal conditions, an r-plane (14) is approximately bisected by a plane formed by the normal of the c-plane (16) and a wind flow vector (36). In the illustrative embodiment, the dome assembly (50) includes an x-ray device for locating the r-planes within the sensor dome (50). A turntable (not shown) orients the sensor dome (50) so that a first r-plane (14) faces leeward of impinging air flow (36). An r-plane normal (38) of a second r-plane forms an angle of approximately 60 degrees with respect to impinging airflow (36). The turntable includes a motor (not shown) for strategically orienting the lattice planes (12, 14, 16) of the dome (50) so as to maximize the strength of the dome (50) with respect to applied stresses.
PCT/US1998/017072 1997-08-19 1998-08-17 System and method for increasing the durability of a sapphire window in high stress environments WO1999010237A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP11514374A JP2001502045A (en) 1997-08-19 1998-08-17 Systems and methods for increasing the durability of sapphire windows in high stress environments
CA002267562A CA2267562A1 (en) 1997-08-19 1998-08-17 System and method for increasing the durability of a sapphire window in high stress environments
AU16979/99A AU1697999A (en) 1997-08-19 1998-08-17 System and method for increasing the durability of a sapphire window in high stress environments

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/914,842 US6123026A (en) 1996-11-12 1997-08-19 System and method for increasing the durability of a sapphire window in high stress environments
US08/914,842 1997-08-19

Publications (2)

Publication Number Publication Date
WO1999010237A2 WO1999010237A2 (en) 1999-03-04
WO1999010237A3 true WO1999010237A3 (en) 1999-05-27

Family

ID=25434843

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/017072 WO1999010237A2 (en) 1997-08-19 1998-08-17 System and method for increasing the durability of a sapphire window in high stress environments

Country Status (6)

Country Link
JP (1) JP2001502045A (en)
KR (1) KR100381686B1 (en)
AU (1) AU1697999A (en)
CA (1) CA2267562A1 (en)
TW (1) TW432197B (en)
WO (1) WO1999010237A2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080534A (en) * 1977-01-28 1978-03-21 Bell Telephone Laboratories, Incorporated Infrared detection and transmission apparatus
WO1992001091A1 (en) * 1990-07-10 1992-01-23 Saphikon, Inc. Apparatus for growing hollow crystalline bodies from the melt
EP0509394A1 (en) * 1991-04-13 1992-10-21 Bodenseewerk Gerätetechnik GmbH Seeker head cover for guided missile
EP0529963A2 (en) * 1991-08-22 1993-03-03 Texas Instruments Incorporated Crystal growth process for large area GaAs and infrared window/dome made therefrom
US5206083A (en) * 1989-09-18 1993-04-27 Cornell Research Foundation, Inc. Diamond and diamond-like films and coatings prepared by deposition on substrate that contain a dispersion of diamond particles
US5425983A (en) * 1992-08-10 1995-06-20 Santa Barbara Research Center Infrared window protected by multilayer antireflective coating

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3052096A (en) 1958-09-08 1962-09-04 Vladimir H Pavlecka Gas turbine power plant having centripetal flow compressors and centrifugal flow turbines
JPH03177800A (en) * 1989-12-05 1991-08-01 Sumitomo Electric Ind Ltd Pyramid dome for infrared sensor
JPH04151500A (en) * 1990-10-16 1992-05-25 Mitsubishi Heavy Ind Ltd Protection device for infrared ray transmitting window of high-speed flying item
JP2713242B2 (en) * 1995-05-31 1998-02-16 日本電気株式会社 Dome for flying objects

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080534A (en) * 1977-01-28 1978-03-21 Bell Telephone Laboratories, Incorporated Infrared detection and transmission apparatus
US5206083A (en) * 1989-09-18 1993-04-27 Cornell Research Foundation, Inc. Diamond and diamond-like films and coatings prepared by deposition on substrate that contain a dispersion of diamond particles
WO1992001091A1 (en) * 1990-07-10 1992-01-23 Saphikon, Inc. Apparatus for growing hollow crystalline bodies from the melt
EP0509394A1 (en) * 1991-04-13 1992-10-21 Bodenseewerk Gerätetechnik GmbH Seeker head cover for guided missile
EP0529963A2 (en) * 1991-08-22 1993-03-03 Texas Instruments Incorporated Crystal growth process for large area GaAs and infrared window/dome made therefrom
US5425983A (en) * 1992-08-10 1995-06-20 Santa Barbara Research Center Infrared window protected by multilayer antireflective coating

Also Published As

Publication number Publication date
AU1697999A (en) 1999-03-16
WO1999010237A2 (en) 1999-03-04
JP2001502045A (en) 2001-02-13
CA2267562A1 (en) 1999-03-04
KR100381686B1 (en) 2003-04-26
KR20000068784A (en) 2000-11-25
TW432197B (en) 2001-05-01

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