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An Overview of
The Student Satellite Project
The Student Satellite Project (SSP) at the
University of Arizona was initiated on November 7, 1996, by Department
of Physics Professor K.C. Hsieh and Aerospace and Mechanical
Engineering Professors Wayne Chen and Ernie Fasse. The initiators felt
that the University of Arizona had all the right ingredients to
support such an endeavor including a strong research program in
space-related sciences and the engineering resources to make it
happen.
Shortly after this genesis, a group of faculty met to discuss how to
cradle the development of a satellite project, which would quickly
become student-driven and designed. It was decided that an
announcement of opportunity (AO) similar to an AO in a traditional
spacecraft mission would be issued on February 5, 1997, and students
would be invited to propose how they would utilize such an
opportunity.
In order to provide some design constraint for this process, and also
to ensure the best possibility of success for the eventual mission,
the launch opportunity of the Small Shuttle Payloads Project Office
Hitchhiker Ejection System (HES) was chosen from the outset. The HES
is an emerging capability on the Space Shuttle for ejecting a payload
from a Get Away Special (GAS) canister, placing it into an orbit
similar to the Space Shuttle's. Utilization of the HES has several
advantages. One of the primary reasons for choosing it was for its
resultant "standard" orbit of 28.5 degrees to 57 degrees
inclination and an orbital altitude ranging from 185km to 400km. Also,
with the upcoming construction of the International Space Station (ISS),
there are currently 34 Shuttle missions between December 1998 and
January 2003 to the ISS orbit of 407km and 51.6( inclination. The
availability of launch opportunities coupled with the HES design
constraints mandated by NASA provided for a nice set of constraints
for designing a spacecraft mission. Some might be quick to point out
the disadvantages of HES, however, which include the 1-year orbital
lifetime, and the requirement to design for launch from a man-rated
vehicle.
With these constraints in mind, over 80 volunteer student respondents
were assembled into 7 teams, comprising 6 design subsystems: Science,
Mechanical Structures and Analysis (MSA), Power Generation and
Distribution (PGD), Data and Command Handling (DCH), Guidance
Navigation and Control (GNC) and Tracking Telemetry and Command (TTC).
The student teams were tasked with finding a faculty advisor and
submitting a "Letter of Intent to Propose" one month later.
Full proposals would follow on April 14, 1997. An Evaluation and
Selection Panel (ESP) was assembled from distinguished individuals of
the University and local industry to evaluate the proposals. They
announced the selected proposal ideas on April 28th, and the Student
Satellite Project was formally organized on May 8, 1997.
Since then the student teams have enthusiastically pushed the project ahead. The designs of the
(now) 7 subsystems have progressed and matured both as independent units and as part of an
overall, coherent system. The progress of these designs was validated on November 22, 1997 at a
Conceptual Design Review
before the members of the ESP, and now advances towards a Preliminary Design Review in early
1999. Student involvement in the project has continued at a high level of approximately 60 to 85
students - even during the summer - as eager recruits have replaced the graduating members of
SSP, and students have defended graduate theses and conducted "capstone" senior design
projects within the context of their involvement in the project.
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