mirror of
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406 lines
15 KiB
HTML
406 lines
15 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<meta
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name="description"
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content="Project Lander created a system to demonstrate a controlled propulsive landing with a solid rocket motor using a hardware in the loop simulation."
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/>
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<meta name="author" content="Anson Biggs" />
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<meta
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name="keywords"
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content="engineering, Capstone, embry-riddle, Formula, aerospace, university, PID, hardware in the loop"
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/>
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<title>LANDER - Lunar Ascent and Descent of Excavation Resources</title>
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<!-- Favicon -->
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<link
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rel="icon"
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href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>🚀</text></svg>"
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/>
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<!-- Custom CSS -->
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<link rel="stylesheet" href="css/custom.css" />
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<!-- Bootstrap CSS -->
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<link rel="stylesheet" href="css/bootstrap.min.css" />
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</head>
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<body>
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<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
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<a class="navbar-brand" href="#">LANDER</a>
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<button
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class="navbar-toggler"
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type="button"
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data-toggle="collapse"
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data-target="#navbarNavAltMarkup"
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aria-controls="navbarNavAltMarkup"
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aria-expanded="false"
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aria-label="Toggle navigation"
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>
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<span class="navbar-toggler-icon"></span>
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</button>
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<div class="collapse navbar-collapse" id="navbarNavAltMarkup">
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<div class="navbar-nav">
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<a
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class="nav-item nav-link"
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href="https://gitlab.com/lander-team/lander-cpp"
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>Embedded Code</a
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>
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<a
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href="https://gitlab.com/lander-team/lander-sim"
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class="nav-item nav-link"
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>Simulink Code</a
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>
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<div class="dropdown show">
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<a
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class="btn btn-secondary dropdown-toggle"
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href="#"
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role="button"
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id="dropdownMenuLink"
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data-toggle="dropdown"
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aria-haspopup="true"
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aria-expanded="false"
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style="margin-left: 10px"
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>
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Team Members
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</a>
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<div class="dropdown-menu" aria-labelledby="dropdownMenuLink">
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<a
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class="dropdown-item"
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href="https://projects.ansonbiggs.com/#category:Capstone"
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>Anson Biggs</a
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>
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<a
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class="dropdown-item"
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href="https://www.linkedin.com/in/michelle-passmore-080643194/"
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>Michelle Passmore</a
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>
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<a
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class="dropdown-item"
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href="https://www.linkedin.com/in/brendan-mcgeeney/"
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>Brendan McGeeney</a
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>
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<a
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class="dropdown-item"
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href="https://www.linkedin.com/in/matthew-robinaugh/"
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>Matthew Robinaugh</a
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>
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<a
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class="dropdown-item"
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href="https://www.linkedin.com/in/joshua-ku-5962a3171/"
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>Joshua Ku</a
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>
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<a
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class="dropdown-item"
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href="https://www.linkedin.com/in/brian-wahlstrom-3b6207149/"
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>Brian Wahlstrom</a
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>
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<a
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class="dropdown-item"
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href="https://www.linkedin.com/in/thigpenmav"
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>Maverick Thigpen</a
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>
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</div>
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</div>
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</div>
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</div>
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</nav>
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<header class="text-center">
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<div class="container">
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<img src="img/logo.png" class="img-fluid" alt="LANDER Team Logo" />
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</div>
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<a class="scroll" href="#scroll"
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><img src="img/chevrons-down.svg" style="width: 75px"
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/></a>
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</header>
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<section>
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<section id="scroll">
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<div class="container">
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<div class="row align-items-center">
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<div class="col-lg-8 order-lg-1">
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<div>
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<h2 class="display-4">About LANDER</h2>
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<p>
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As interest in colonizing the Moon increases, developing a
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sustainable method of transporting equipment and resources to
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and from the lunar surface will be necessary. LANDER’s
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approach to this problem is a system that uses one thruster
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capable of vectoring thrust to control vehicle attitude and
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perform propulsive landings with minimal fuel use. The key to
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the design challenge is creating a suitable test environment
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for a system that can simulate variables such as lunar gravity
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and a lack of atmosphere while on Earth. Project LANDER
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endeavored to provide a potential solution by designing a
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complex simulation utilizing live data from a
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hardware-in-the-loop system. Unfortunately, due to an
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abbreviated timetable and low-quality components, LANDER did
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not meet all its requirements for a successful Operational
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Demonstration. However, LANDER was a proof-of-concept system,
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and the team hopes to lay the foundation for future
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development in this area.
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</p>
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</div>
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</div>
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<div class="col-lg-4 order-lg-2">
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<div class="p-5">
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<model-viewer
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style="height: 400px"
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alt="LANDER Thrust Vector Control Model"
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src="img/tvc.glb"
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ar
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ar-modes="webxr scene-viewer quick-look"
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shadow-intensity="5"
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camera-controls
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></model-viewer>
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</div>
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</div>
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</div>
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</div>
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</section>
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<hr />
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<section>
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<div class="container">
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<div class="row align-items-center">
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<div class="col-lg-4 order-lg-1">
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<div>
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<h2 class="display-4">Test Stand Setup</h2>
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<p>
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The fully assembled system and the system's CAD can be seen in
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the following figure. LANDER consists of 5 subsystems, Control
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Software, Avionics, Control Mechanisms, Structure, and Test
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Stand. These subsystems all come together to produce a test
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stand capable of simulating a vehicle landing on the lunar
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surface. The test stand involves a complex
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hardware-in-the-loop computer simulation running on a
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microcontroller.
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</p>
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</div>
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</div>
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<div class="col-lg-8 order-lg-2">
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<div class="p-5">
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<img
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class="img-fluid"
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src="img/assemblyCAD.png"
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alt="Picture of the assembled test stand vehicle next to the CAD of the vehicle."
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/>
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</div>
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</div>
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</div>
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</div>
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</section>
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<hr />
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<section>
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<div class="container">
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<div class="row align-items-center">
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<div class="col-lg-6 order-lg-2">
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<div>
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<h2 class="display-4">Software Concept of Operations</h2>
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<p>
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The simulated vehicle comprises a feedback loop where the
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rocket motor causing forces on load cells translates to forces
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in the simulation. The control system utilizes a
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<abbr
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title="proportional–integral–derivative controller is a control loop mechanism for driving an error in state (vehicle deflection) to zero."
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>PID</abbr
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>
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that gives the simulated vehicle commands; the commands are
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then rendered into hardware as TVC commands. The physical
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vehicle encompasses the avionics, TVC, and load cells. The
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physical vehicle receives commands from the simulated vehicle
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and returns calculated thrust data to the control software.
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</p>
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</div>
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</div>
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<div class="col-lg-6 order-lg-1">
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<div class="p-1">
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<img
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class="img-fluid"
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src="img/conops.svg"
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alt="Concept of Operations for the LANDER software and hardware control loop."
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/>
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</div>
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</div>
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</div>
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</div>
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</section>
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<hr />
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<section>
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<div class="container">
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<div class="row align-items-center">
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<div class="col-xl-4">
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<div>
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<h2 class="display-4">Operational Demonstration Results</h2>
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<p>
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The experimental thrust curve shows that the four load cells
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matched the thrust curve for the
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<a href="https://www.thrustcurve.org/motors/Estes/F15/"
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>Estes F15</a
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>
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within 6.2 Newton Seconds or 13.2% of expected. Unfortunately,
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due to multiple changes in project and scope, LANDER initially
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chose very cheap load cells since the test stand demonstration
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originally only served as verification for much more extensive
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goals, such as an actual propulsive landing. Therefore,
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acquiring usable data from the load cells took much more time
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and resources than the team initially expected. This time sink
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could have easily been mitigated if the team had spent more
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money on load cells to handle the new mission profile.
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However, the team overcame the challenge thanks to proper risk
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mitigation.
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</p>
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</div>
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</div>
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<div class="col-xl-8">
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<div class="p-1">
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<embed
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type="text/html"
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src="helpers/opdem.html"
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width="100%"
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style="min-height: 50vh; max-height: 80vh"
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/>
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</div>
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</div>
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</div>
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</div>
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</section>
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<hr />
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<section>
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<div class="container">
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<h2 class="display-4">Videos of the Operational Demonstration</h2>
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<p style="font-style: italic">The Grand Finale</p>
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<div class="row align-items-center">
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<div class="col-lg-7 order-xl-2">
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<div class="p-1">
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<div
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style="
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position: relative;
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padding-bottom: calc(56.25% + 44px);
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"
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>
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<iframe
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src="https://gfycat.com/ifr/LinearYellowBarebirdbat"
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frameborder="0"
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scrolling="no"
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width="100%"
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height="100%"
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style="position: absolute; top: 0; left: 0"
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allowfullscreen
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></iframe>
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</div>
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</div>
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</div>
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<div class="col-lg-5 order-xl-1">
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<div>
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<div
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style="
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position: relative;
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padding-bottom: calc(108.6% + 44px);
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"
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>
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<iframe
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src="https://gfycat.com/ifr/ScornfulDefinitiveFairyfly"
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frameborder="0"
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scrolling="no"
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width="100%"
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height="100%"
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style="position: absolute; top: 0; left: 0"
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allowfullscreen
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></iframe>
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</div>
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</div>
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</div>
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</div>
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</div>
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</section>
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</section>
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<hr style="padding: 50px" />
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<section>
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<div class="container">
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<div class="row align-items-center">
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<div class="jumbotron">
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<h1 class="display-4">Final Report</h1>
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<p class="lead">
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At the conclusion and verification of the Operational
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Demonstration, LANDER has compiled a Final Report for the project.
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The Final Report compiles two semesters of work into one succinct
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document that highlights all of the findings from the project.
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Open FinalReport.pdf
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</p>
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<!-- Button trigger modal -->
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<button
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type="button"
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class="btn btn-primary btn-lg"
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onclick="window.location.href='FinalReport.pdf';"
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>
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Open FinalReport.pdf
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</button>
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<!-- <hr class="my-4" />
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<h2>Donations less than $500</h2>
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<p>
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Cash donations smaller than $500 are made easy using the gofundme
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link below. If you wish to donate something other than money
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please reach out to us using the form below.
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</p>
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<a
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class="btn btn-primary btn-lg"
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style="background-color: #00b964; border-color: #00b964;"
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href="https://www.gofundme.com/f/embryriddle-aeronautical-university-fsae-team"
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role="button"
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>gofundme</a
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>
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<hr class="my-4" />
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<h2>Donations greater than $500</h2>
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<p>
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Large donations must be made through the via Embry-Riddle using
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the link below.
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</p>-->
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</div>
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</div>
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</div>
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</section>
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<!-- Footer -->
|
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<footer>
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<div>
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<p style="font-size: 10em">🌑</p>
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<p
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style="
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font-weight: light;
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font-size: 1em;
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color: white;
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font-style: italic;
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"
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>
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ad astra per alas porci
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</p>
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<p style="font-size: 0.5em; margin-top: 150px">🐖</p>
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</div>
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</footer>
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