Airships Module

Directory List

AirshipGUI Analysis Control
Demos/Control Demos/Simulation Mass
Modeling Simulation


AirshipGUI

High-level airship design tool.

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Analysis

Plot a 3D layout of an airship model, including hull, fins, and gondola
Plot the airship aero coefficients across angle of attack and sideslip
Plot a 3D airship hull, fins, gondola, and show internal ballonets
Examine the open-loop root locus across altitude, velocity, pitch
Evaluate the maximum velocity and thrust for the airship
Compute the trim controls for an airship at a range of flight conditions
Compute the aerodynamic force and torque for an airship
Generate linear models of an airship at a range of flight conditions.
Obtain the linear model of an airship at a particular flight condition.
Find the latitude and longitude of a major U.S. city.
Compute horizontal wind variance with latitude and longitude.
Compute horizontal wind variance with latitude, longitude, and altitude.

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Control

Autopilot for an airship.
Controlled airship simulation with autopilot and feedback control.
Compute a linearized model of an airship at a given flight condition.
Compute the stability and control derivatives for an airship model.
vCompute the airship state vector as an acstate object from a model data
Extract the long. and lat.-dir. statespace models for an airship
Compute the trim controls for an airship at a given flight condition.
The lateral-directional control laws for an airship.
The longitudinal control laws for an airship.

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Demos/Control

Demonstrate feedback control of an airship.
Compare linear and non-linear simulations of an airship.

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Demos/Simulation

Demonstrate the AirshipAero function.
Simulate the airship dynamic model.
Fly an Airship.

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Mass

Estimate the precent rate of change of mass per minute across altitude
Initialize and update the airship mass model as it changes with alt.
Generate a distributed mass model for an axisymmetric airship.
Integrate the mass properties of multiple components into a single body

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Modeling

Generate the added mass for various geometric shapes. At this point
Compute the x-location of the center of volume of an airship hull.
Load the approximate aerodynamic coefficients for an airship.
Compute the approximate drag on an airship.
Compute the main geometric properties of an airship hull.
Compute the added mass/inertia factors for an airship hull.
Compute the geometric integrals for a double-ellipsoid airship hull.
Determine the x-location of the payload that provides long. balance.
Build the aerodynamic model of an airship.
The drag coefficient of airship as a function of angle of attack.
The lift coefficient of an airship envelope.
The moment coefficient of an airship envelope. dK is a column vector.
Create a 3-D image of an airship hull.
Compute the hull and fin efficiency factors for an airship.
Compute the fin reference area, hull projection, mean chord and width.
Compute the surface area and center of mass of an airship gondola.
Compute volume, surf area, centroid and specific MOI of half-ellipsoid
Airship Model #1
Airship Model #2
Airship Model #2
Airship Model #4
Airship Model approximating the size and weight of the Goodyear Blimp
Evaluates the required solar cell coverage for a particular airship
Determine the mass available for airship structure and systems.

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Simulation

Aerodynamic forces and moments for an airship. All terms in body frame.
Initialize an aircraft data structure and state for airship simulation
Airship propeller model.
Sensor model for airship.
Simulate an airship in flight
GUI for setting up airship simulations

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