Abstract
The effect of maneuver overload on a new type of the multiplanar conformal off-axis four-mirror is studied under the noninertial environment of aerospace. Two kinds of maneuvering flight, horizontal maneuvering and vertical maneuvering, are taken as examples, and the force analysis of the aircraft in the noninertial environment is considered. And the force analysis of the aircraft and the multiplanar conformal off-axis four-mirror is connected by the overload coefficient. Finally, the finite element simulation analysis of the multiplanar conformal off-axis four-mirror is carried out. The results show that the influence of maneuver overload on the multiplanar conformal off-axis four-mirror cannot be ignored. Large overload will result in large deformation of the multiplanar conformal off-axis four-mirror. The deformation is closely related to the structure of the multiplanar conformal off-axis four-mirror. Under the action of lateral force, nonuniform deformation is more likely to occur on the surface of the multiplanar conformal off-axis four-mirror.
Highlights
The large field of view and high-resolution photoelectric sighting system is the “eye” of various physical space-time sensing equipment and the core point of technological breakthroughs in the fields of national defense security, space exploration, and high and new science and technology
The use of an off-axis free-form surface is a revolutionary technology to break through the short action distance of a multiband photoelectric sighting system and realize the common caliber, light, and small size
For a new type of the multiplanar conformal off-axis four-mirror, the deformation of the multiplanar conformal off-axis four-mirror is analyzed in the noninertial environment when the aircraft is maneuvering in the horizontal plane and vertical plane, and the conclusions are obtained as follows: (1) The increase of overload will lead to the increase of mirror deformation
Summary
The large field of view and high-resolution photoelectric sighting system is the “eye” of various physical space-time sensing equipment and the core point of technological breakthroughs in the fields of national defense security, space exploration, and high and new science and technology. By using digital and classical holographic interferometry to analyze how the beam is deformed under the force and how much it can withstand, Černecký et al [20] concluded that digital holographic interferometry is more convenient, fast, and accurate than classical holographic interferometry These advanced optimization methods should be extended to the optimization design of mirrors, which will improve the quality of the optimization design of mirrors. Previous studies focused on the influence of temperature and gravity loads on the surface figure accuracy of the mirror, while there were few studies on the deformation of the mirror in the noninertial environment of aerospace during the orbit operation. Considering the force state of the aircraft in two kinds of maneuvering flights, namely, horizontal maneuvering and vertical maneuvering, in a noninertial environment, the finite element software is used to calculate, and the deformation of each mirror in different states is analyzed. The research results provide a valuable basis for the optimization of multiplanar conformal off-axis four-mirror
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