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Anson Biggs 2021-12-07 19:13:08 -07:00
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css/custom.css
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margin-top: 5vh;
}
@media (max-width: 992px) {
/* @media (max-width: 992px) {
.p-5 {
padding: 3rem;
padding-bottom: 1rem;
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div.col-lg-6 {
text-align: center;
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a {
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index.html
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@ -80,7 +80,7 @@
</nav>
<header class="text-center">
<div class="container">
<img src="img/logo.png" class="img-fluid" alt="LANDER Logo" />
<img src="img/logo.png" class="img-fluid" alt="LANDER Team Logo" />
</div>
<a class="scroll" href="#scroll"
><img src="img/chevrons-down.svg" style="width: 75px"
@ -96,20 +96,21 @@
<p>
As interest in colonizing the Moon increases, developing a
sustainable method of transporting equipment and resources to
and from the lunar surface will be necessary. LANDER's
and from the lunar surface will be necessary. LANDER’s
approach to this problem is a system that uses one thruster
capable of vectoring thrust to control vehicle attitude and
perform propulsive landings with minimal fuel use. However,
key to the design challenge is creating a suitable test
environment for such a system that can simulate variables,
such as lunar gravity and a lack of atmosphere. Project LANDER
perform propulsive landings with minimal fuel use. The key to
the design challenge is creating a suitable test environment
for a system that can simulate variables such as lunar gravity
and a lack of atmosphere while on Earth. Project LANDER
endeavored to provide a potential solution by designing a
complex simulation utilizing live data. Due to an abbreviated
timetable and low-quality components, LANDER did not meet all
of its requirements for the Thrust Vector Control Test and
Operational Demonstration. However, while LANDER was a
proof–of-concept system, the team hopes to lay the foundation
for future development in this area.
complex simulation utilizing live data from a
hardware-in-the-loop system. Unfortunately, due to an
abbreviated timetable and low-quality components, LANDER did
not meet all its requirements for a successful Operational
Demonstration. However, LANDER was a proof-of-concept system,
and the team hopes to lay the foundation for future
development in this area.
</p>
</div>
</div>
@ -137,13 +138,13 @@
<div>
<h2 class="display-4">Test Stand Setup</h2>
<p>
The fully assembled system and the CAD of the system can be
seen on the figure to the right. LANDER consists of 5
subsystems, Control Software, Avionics, Control Mechanisms,
Structure, and Test Stand. These subsysems all come together
to produce a test stand capable of simulating a vehicle
landing on the lunar surface. The test stand involves a
complex hardware in the loop computer simulation running on a
The fully assembled system and the system's CAD can be seen in
the following figure. LANDER consists of 5 subsystems, Control
Software, Avionics, Control Mechanisms, Structure, and Test
Stand. These subsystems all come together to produce a test
stand capable of simulating a vehicle landing on the lunar
surface. The test stand involves a complex
hardware-in-the-loop computer simulation running on a
microcontroller.
</p>
</div>
@ -153,7 +154,7 @@
<img
class="img-fluid"
src="img/assemblyCAD.png"
alt="Picture of people gathered at an SAE International Event"
alt="Picture of the assembled test stand vehicle next to the CAD of the vehicle."
/>
</div>
</div>
@ -175,12 +176,11 @@
title="proportional–integral–derivative controller is a control loop mechanism for driving an error in state (vehicle deflection) to zero."
>PID</abbr
>
which gives commands to the simulated vehicle; the commands
are then translated back into hardware as TVC commands. The
physical vehicle encompasses the avionics, TVC, and load
cells. The physical vehicle receives commands from the
simulated vehicle and returns, calculated thrust data back to
the control software.
that gives the simulated vehicle commands; the commands are
then rendered into hardware as TVC commands. The physical
vehicle encompasses the avionics, TVC, and load cells. The
physical vehicle receives commands from the simulated vehicle
and returns calculated thrust data to the control software.
</p>
</div>
</div>
@ -189,7 +189,7 @@
<img
class="img-fluid"
src="img/conops.png"
alt="Picture of people gathered at an SAE International Event"
alt="Concept of Operations for the LANDER software and hardware control loop."
/>
</div>
</div>
@ -205,18 +205,21 @@
<h2 class="display-4">Operational Demonstration Results</h2>
<p>
The experimental thrust curve shows that the four load cells
managed to match the thrust curve for the
matched the thrust curve for the
<a href="https://www.thrustcurve.org/motors/Estes/F15/"
>Estes F15</a
>
within 6.2 Newton Seconds or 13.2% of expected. Due to
multiple changes in project and scope LANDER initially chose
very cheap load cells since the test stand demonstration was
originally mean't to be a verification for much larger goals.
Acquiring usable data from the load cells ended up taking much
more time and resources than the team initially expected, but
thanks to proper risk mitigation the team was able to overcome
the challenge and find a real solution.
within 6.2 Newton Seconds or 13.2% of expected. Unfortunately,
due to multiple changes in project and scope, LANDER initially
chose very cheap load cells since the test stand demonstration
originally only served as verification for much more extensive
goals, such as an actual propulsive landing. Therefore,
acquiring usable data from the load cells took much more time
and resources than the team initially expected. This time sink
could have easily been mitigated if the team had spent more
money on load cells to handle the new mission profile.
However, the team overcame the challenge thanks to proper risk
mitigation.
</p>
</div>
</div>
@ -291,9 +294,10 @@
<h1 class="display-4">Final Report</h1>
<p class="lead">
At the conclusion and verification of the Operational
Demonstration LANDER has compiled a Final Report for the project.
Demonstration, LANDER has compiled a Final Report for the project.
The Final Report compiles two semesters of work into one succinct
document that highlights all of the findings from the project.
Open FinalReport.pdf
</p>
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