Aeronautics and astronautics – Spacecraft – Spacecraft formation – orbit – or interplanetary path
Patent
1996-02-06
1998-02-10
Mojica, Virna Lissi
Aeronautics and astronautics
Spacecraft
Spacecraft formation, orbit, or interplanetary path
2441294, 2441295, 250214PR, B64G 100
Patent
active
057160309
ABSTRACT:
A spacecraft telescope door (10) adapted for use with remote sensing devices requiring optical and infrared calibration. The door (10) includes a first calibration surface (24) disposed on a first panel (14) for providing a radiant temperature reference for infrared calibrations. A second calibration surface (26) is disposed on a second panel (12) for providing an absolute radiance reference for optical calibrations. A panel hinge (16) controls the relative position of the panels (12,14) with respect to each other, and an aperture hinge (20) controls the relative position of the panels with respect to the aperture (28). In a specific embodiment, the first surface (24) is painted with chemglaze Z306, a highly emissive paint with a low reflectance for facilitating infrared calibration. The second surface (26) is painted with YB71, a diffuse reflective paint for facilitating optical calibration. In the illustrative embodiment, the panel hinge (16) and the aperture hinge (20) are motorized for controlling the relative orientation of the panels (12,14) and the aperture (28). By controlling the orientation of the panels (12,14) and the aperture (28), the first surface (24) and the second surface (26) may be accurately positioned for infrared and optical calibrations respectively. In addition, the panels (12,14) may be positioned so as to protect the diffuse second surface (26) from ultraviolet degradation, as most white diffuse paints degrade with prolonged exposure to ultraviolet light. In addition, the first panel (24) may contain heaters and temperature sensors (25) for control of the radiant temperature.
REFERENCES:
patent: 3768754 (1973-10-01), Janes
patent: 4669685 (1987-06-01), Dalby
patent: 4753465 (1988-06-01), Dalby
Huse George R.
LaFiandra Carlo F.
Rappoport William M.
Zalewski Edward F.
Denson-Low W. K.
Hughes Aircraft Company
Mojica Virna Lissi
Schubert W. C.
LandOfFree
Aperture door and calibration source for spacecraft remote sensi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aperture door and calibration source for spacecraft remote sensi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aperture door and calibration source for spacecraft remote sensi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2071208