M. A. Farsi; N. Ariaii-Far; R. Kalantari-Nezhad; M. Bahrami
Volume 3, Issue 1 , July 2010, , Pages 15-23
Abstract
Separation system is one of the main sub-systems in every space device and missile. This system is used to separate active and inactive sections in a missile. The separation process should be done accurately. A separation system explained in this paper was designed and produced based on mission, rocket ...
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Separation system is one of the main sub-systems in every space device and missile. This system is used to separate active and inactive sections in a missile. The separation process should be done accurately. A separation system explained in this paper was designed and produced based on mission, rocket configuration and manufacturability. This system uses explosive bolts and spring mechanism. This separates accurately payload from motor in a sounding rocket. Aerodynamic forces were used to determine structure strength. This structure designed based on at least weight and drag force. Several tests were done to evaluate this system performance. The tests results confirm this
system capability.
M. Tahaye Abadi; H. Kashani; N. Ariaeifar
Volume 2, Issue 1 , April 2009, , Pages 25-34
Abstract
The paper presents a kinematical model for a random positioning system which simulates microgravity conditions on the ground. The random positioning system contains two frames, with an experiment platform. The frames are rotated around two perpendicular axes by a random angular velocity that it causes ...
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The paper presents a kinematical model for a random positioning system which simulates microgravity conditions on the ground. The random positioning system contains two frames, with an experiment platform. The frames are rotated around two perpendicular axes by a random angular velocity that it causes continuous changes in the orientation of experimental sample relative to the gravity’s vector. The angular velocity between random values is changed based on specific function in order to limit the generated spurious acceleration below a preselected threshold. The kinematical model yields criteria to evaluate the microgravity conditions on ground base. Such criteria are defined based on the mean values of acceleration and gravity components which are sensed by the rotating experimental sample.
