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Brand: 3dprcfun
£2.55

Inclusive All Taxes

Description

Airy-71

a lightweight 3D printable rubber-band engine model / sailplane

 

User Guide

Figure 1: 3D-printed Airy-71 with rubber-band engine

 

Parameter

Airy-71

Wingspan:

706 mm

Length:

499 mm

Wing airfoil:

S4083

Weight (engine / sailplane):

80 / 70 g

Wing area:

6.2 dm2

Wing load (engine / sailplane):

12.9 / 11.3 g/dm2

 

Available here: https://cults3d.com/en/users/3dprcfun/
                              https://rc3dmarket.com/3dprcfun

Content

Content 2

What you get 2

3D print files. 2

What you need. 4

3D printer specification. 4

Required materials. 5

Assembly. 5

Main video assembly guide. 5

Pre-flight setting & check. 5

What you get

This is a thoroughly designed 3D printable lightweight rubber-band engine plane. I spent considerable amount of time with prototype testing and refinement to improve printability, flight characteristics, and rigidity. The latter is essential since harder landings are impossible to avoid. 

Flexibility was a further design parameter. The Airy-71 can be used as rubber-band engine model and sailplane. Changing between these two modes of operation is possible within seconds. 

Most components are designed for printing with Light Weight PLA. The propeller and some other small parts are printed in PLA to withstand stronger forces and to obtain the desired center of gravity position.

 

Flight video

 

3D print files

The package includes a complete set of STL files, a set of PrusaSlicer project files, and the hereof generated gcode. PrusaSlicer is a powerful open-source software that can be used for free. The project files were created with version 2.7.1 and contain all detailed print settings required to optimally print each airplane part.

STL

STL stands for Standard Tessellation Language, a file format that describes the surface geometry of a three-dimensional object. High resolution STL files are included for all printable parts.

Project files

Multiple STL files can be combined into a single project file (3mf) and "print job” (gcode). Specific slicer settings can be applied to e.g., increase the stability of a certain part area or improve the printability of an area with large overhang angle.
The package includes 2 project files with full access to all component-specific slicer settings. All project files can be easily modified with the graphical user interface of PrusaSlicer to comply with your 3D printer in terms of print volume, parameters, and print material.

Gcode

For the PLA project file and each LW-PLA printable part, gcode files are provided to minimize your preparation time. Please note that these gcode files were generated for the Prusa i3 MK3S. For many 3D printers and filaments, the gcode should just work fine. If you experience issues with the print quality, just modify the slicer parameters in the project file to create the optimal gcode for your printer.

 

Figure 2 depicts an exploded view of the Airy-71 and provides an overview of all 3D printable parts. The color code of the index numbers shows to which project file the part belongs.

Figure 2: Exploded view with labeled parts

 

Project (.3mf)

STL name

Index

Weight

Comment

LW-PLA

weight: 66g

 

wing-2-l

wing-1-l

wing-1-r

wing-2-r

horistab-front

horistab-back

fuselage-1

fuselage-2

fuselage-3

 

00

01

02

03

04

05

06

07

08

 

8.9 g

10.2 g

10.2 g

8.9 g

1.8 g

1.8 g

14.4 g

6.1 g

3.4 g

 

extrusion mult.: 0.45; nozzle temp.: 250°C extrusion mult.: 0.45; nozzle temp.: 250°C extrusion mult.: 0.45; nozzle temp.: 250°C extrusion mult.: 0.45; nozzle temp.: 250°C extrusion mult.: 0.35; nozzle temp.: 250°C extrusion mult.: 0.35; nozzle temp.: 250°C extrusion mult.: 0.45; nozzle temp.: 240°C

extrusion mult.: 0.40; nozzle temp.: 250°C

extrusion mult.: 0.35; nozzle temp.: 250°C

PLA

time: 3h 52m, weight: 23g

 

rod (2x)

wing-connector-f.

wing-connector-b.

rubber-end-holder

fuselage-connector

propeller

locking-ring

spinner

nose-part1

nose-part2

 

10

11

12

13

14

15

16

17

18

19

 

1.0 g

0.6 g

0.2 g

0.6 g

2.3 g

9.1 g

0.4 g

1.0 g

2.0 g

6.5 g

 

 

 

 

 

 

 

 

 

connector for sailplane (no drilling)

sailplane fuselage nose

Note: If you want to use a different slicer software, please make sure to check and reapply all part-dependent print settings provided in the PrusaSlicer project files. Otherwise, some parts may not print as desired.

Ein Bild, das Werkzeug, Messer, Kunst, Design enthält. Automatisch generierte Beschreibungs

Figure 3: All print parts fresh from the printer before post-processing.

What you need

3D printer specification

All STL files have been successfully tested with my Prusa i3 MK3S.

3D print volume

 

Minimum requirement for single STL file (ensures printability of all plane parts): X=145mm; Y=145mm; Z=180mm.
Requirement for provided gcode: X
200mm; Y 200mm; Z 180mm.

Nozzle diameter

0.4mm

Filament support

PLA / LW-PLA

Required materials

Almost all plane parts are printable except for the rubber bands and some metal parts.

Filament

Light-Weight PLA: ~70g (e.g., 3DLabPrint PolyLight 1.0)

PLA: ~25g (e.g., Overture PLA Professional)

Spring steel wires

Ø 1.5mm, 100mm (to connect propeller with rubber band)

Metal washer

2 small metal washers: inner Ø ≈ 1.5-2mm, outer Ø 5-6mm, thickness ≈ 0.3-0.8mm

Metal spring

Metal spring from a ballpen

Rubber band

Rubber band for the engine e.g., Flight-Depot Sport Gummi 4.8 X 2000mm

Rubber bands to attach the wing to the fuselage.

Basic tools

Cutter knife, file, pliers, drilling machine and drill Ø 1.6mm

CA glue

Medium viscosity e.g., Hobbyking Super Glue CA (50g / 1.7oz) Medium

CA accelerator

Recommended e.g., Hobbyking Insta-Set CA Accelerator 2. Oz

 

Assembly

Main video assembly guide

This Airy-7 assembly guide provides all required hints for a successful assembly of the Pilatus B4.

Chapters:

            00:00  >   Intro
00:26  >  
Wing
03:45  >  
Fuselage
07:34  >   Glider nose & rubber engine

Pre-flight setting & check

Figure 4: Center of gravity (CoG)

Video

Shop Policies

Delivery Policy

Digital files for own printing will be made available for download (no shipping costs).


Printed parts:

Germany:
- Shipping fee: EUR 7.- including insurance and tracking.
- Expected delivery time: 2-5 days.

European Union (except Germany):
- Shipping fee Option 1: EUR 10.50 no insurance, no tracking. No reimbursement from DHL or the seller in the unlikely event that the goods get damaged or lost during delivery.
- Shipping fee Option 2: EUR 16.50 including insurance and tracking.
- Expected delivery time: 5-10 days.

Please step into contact with me for delivery to other parts of the world.


Contact: 3dprcfun@gmx.net


Refund Policy

30 days return for physical products (printed parts). Buyer pays return shipping.

Offer to Buyer

For our next generation of aerospace engineers :-)

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