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Glider

Glider

By Otto Lilienthal

HIGHLIGHTS
  • Easy to 3D print
  • Requires paper to cover the wing
  • Requires tube for the body
OVERVIEW

Simple glider design, which handles all the structural constraints. You are expected to handle the aerodynamics and stability.

You are supposed to cover the wing with paper and add the central tube ( a straw works well) and the tail.

Uses the NACA 4 digit series of profiles, so all sorts of performance table (like lift vs drag coefficients) can be easily found online.

Designed for 3D printing: uses minimal material and prints very quickly (little more than 1 hr).

DESIGN REQUIREMENTS
Machine The component will be designed to the chosen machine specifications =
Material Only the selected materials will be considered for the design =
PLA +2
Wingspan Full length from wingtip to wingtip.( A good approximation for now, not exact value) = mm
Chord Width of the wing, from leading edge to trailing edge. = mm
Body d Diameter of the tube which acts as the body for the glider = mm
Camber max First digit of a NACA 4 digit profile. Maximum camber as percentage of chord lenght =
Camber pos Second digit of a NACA 4 digit progile. Distance of maximum camber from the airfoil leading edge in tenths of chord length =
Thickness max Last two digit of a NACA 4 digit profile. Maximum thickness of the airfoil as percentage of the chord =
Alpha Angle of attack. Angle between the chord and the horizontal during levelled flight = deg

ADVANCED
Theta How much the wings are angled upward. A value of 0 means that the wing lay on the horizonal plane. = deg
Sweep How much the wings are angled backward. A value of 0 means that the wing axis is perpendicular to the glider body. = deg
Load Expected vertical load over the full wing. Typically the mass of the glider multiplied by some safety factor N
Mass Component mass will not exceed this value kg
Temp min Will work down to min temperature or lower °C
Temp max Will work up to max temperature or above it °C

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Your Glider

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.zip folder with

FILE Printing handbook .pdf A copy your design requirements .txt Bill of materials .csv 3D models approx. 250kB

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SUGGESTIONS

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Generating files

3D PRINTER SETTINGS

Nozzle d Nozzle diameter. If possible, features thickness will be chosen as a multiple of this value. = mm
Min layer t Minimum layer thickness. Smallest height which ensures good quality. = mm
Min w Minimum width which ensure a good quality print. This is the thinnest wall you can print. = mm
Min tol Minimum tolerance. The smallest value x such that a cylinder of diameter d will fit in a hole of diameter d+x. = mm
Pip tol Print-in-place tolerance: defined as Minimum tolerance, but with the cylinder printed inside the hole. = mm
Printer bed size x Size of the printing bed = mm
Printer bed size y Size of the printing bed, perpendicular to x = mm
Printer max h Maximum height for a printed part = mm
Max bridge Max length for a bridge = mm
Max overhang Max overhang angle, measured from the vertical (90 deg is horizontal). = deg
Francesco

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