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Ed Berray

In Uncategorized on May 6, 2020 by nicholasandrewray

Ed Berray copy

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„Lillflygarn“ – Online Livingroom Contest

In Uncategorized on May 6, 2020 by nicholasandrewray

Click here to download a PDF of the plan.

Click here to download a PDF of the plan.

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NON-HELICAL PITCH PROP BLOCK IN FUSION 360 by David Campbell

In Uncategorized on May 6, 2020 by nicholasandrewray

NON-HELICAL PITCH PROP BLOCK IN FUSION 360 by David Campbell

1) https://www.autodesk.com/products/fusion-360/free-trial Download and register as an enthusiast/hobbyist.  This makes the license free.

2) Open Fusion 360. Put in Design Mode, File new (From Design), click on origin to show origin and 3Dview planes (Fig 1).

Fig 1

3) Hover your cursor over the 3D gui and click on the house. The view will change to isometric and full screen.

4) To make a 3″ x 10″ Block with Treger Angles at each station along the block I took the angles from the Prop blocks website. You can modify them by using the prop pitch calculator at the link below. http://n-lemma.com/indoorrc/propcalc.htm For this block we will need 14 construction planes along the same axis. (Fig 2)(Chart 1) https://www.youtube.com/watch?v=jmgnFFewwT4

Fig 2

chart-1

5) Using the plane you select for your first sketch(YZ) click on Construct/Offset plane/enter (-1″) for the distance and click enter. This will create an offset plane 1″ away from the origin plane you clicked first. Repeat for the first 6 inches and then use .5 inches for the rest of the construction planes.

6) Click on the vertical plane of the origin (XZ) Click on Create sketch, draw a line along the center lines of each construction plane as shown in (Fig 3).

Fig 2

7) Click on Construct/Offset Plan/ Create /Create sketch, draw centerline from center point of plane into the upper right quadrant for 1.5 inches at the angle noted on the chart (Chart 1) Plane 1/Inch 1/Local Pitch 26/Upper Right Quad 13.59Deg.

8) Sketch a mirror line from the center point of the plane into the Lower Right Quad at the angle shown in (Chart 1).

9) Mirror the first line using the second line as the mirror line. This will create an equal line (1.5″) into the Lower Left Quad. You could also just sketch the line using the center point of the plane and the angle from the (Chart 1) below for Lower Left Quad. This is the second face showing in (Fig 3). The first is a rectangle at 0 inches. The dimensions of the upper edge is 3″.

10) Sketch a line from each end to a point normal to the bottom of your block. Connect the two lines. If you have sketched each line on the same sketch plane all end points of each line are connected to the connecting lines you should have created a face. It should light up when you click on it. This is your uncambered airfoil shape. If you want a camber add an arc instead of a line.

11) Repeat for all planes in chart below. (Chart 1) The drawing should look similar to (Fig 4) . The distance between each line and a smooth arc of the endpoints on each end of the lines.

Fig 4

12) Start at one end and slowly click each face, wait until the computer has completed its tasks and click the next face. Continue until each face has been selected then click on OK. When you have all the faces lit as below in (Fig 5), you can loft each section to the next. Again be careful to allow the computer to complete each loft prior to selecting the next face.

Fig 5

13) You should see a screen like Fig 6. Hide the sketches and construction planes and you should see Fig 7. https://www.youtube.com/watch?v=XkKTXKp-ziI&t=334s I added a radius to the upper edge but its up to you.

Fig 6

Fig 7

14) Click on File/3DPrint , select the model,and unclick send to 3D Print Utility. Click on OK. You should get a model like the one (Fig 8)(tesselated with triangles)

Fig 8

Save it as an STL file, send to a printing service or print on your personal printer

Fig 9

I got lots of help from John Kagan and others for which I am very grateful. There are many different ways to draw the blocks but this one is I think the easiest to explain.
If there are any questions or concerns post the on Facebook

Read More »

NON-HELICAL PITCH PROP BLOCK IN FUSION 360 by David Campbell

1) https://www.autodesk.com/products/fusion-360/free-trial Download and register as an enthusiast/hobbyist.  This makes the license free.

2) Open Fusion 360. Put in Design Mode, File new (From Design), click on origin to show origin and 3Dview planes (Fig 1).

Fig 1

3) Hover your cursor over the 3D gui and click on the house. The view will change to isometric and full screen.

4) To make a 3″ x 10″ Block with Treger Angles at each station along the block I took the angles from the Prop blocks website. You can modify them by using the prop pitch calculator at the link below. http://n-lemma.com/indoorrc/propcalc.htm For this block we will need 14 construction planes along the same axis. (Fig 2)(Chart 1) https://www.youtube.com/watch?v=jmgnFFewwT4

Fig 2

chart-1

5) Using the plane you select for your first sketch(YZ) click on Construct/Offset plane/enter (-1″) for the distance and click enter. This will create an offset plane 1″ away from the origin plane you clicked first. Repeat for the first 6 inches and then use .5 inches for the rest of the construction planes.

6) Click on the vertical plane of the origin (XZ) Click on Create sketch, draw a line along the center lines of each construction plane as shown in (Fig 3).

Fig 2

7) Click on Construct/Offset Plan/ Create /Create sketch, draw centerline from center point of plane into the upper right quadrant for 1.5 inches at the angle noted on the chart (Chart 1) Plane 1/Inch 1/Local Pitch 26/Upper Right Quad 13.59Deg.

8) Sketch a mirror line from the center point of the plane into the Lower Right Quad at the angle shown in (Chart 1).

9) Mirror the first line using the second line as the mirror line. This will create an equal line (1.5″) into the Lower Left Quad. You could also just sketch the line using the center point of the plane and the angle from the (Chart 1) below for Lower Left Quad. This is the second face showing in (Fig 3). The first is a rectangle at 0 inches. The dimensions of the upper edge is 3″.

10) Sketch a line from each end to a point normal to the bottom of your block. Connect the two lines. If you have sketched each line on the same sketch plane all end points of each line are connected to the connecting lines you should have created a face. It should light up when you click on it. This is your uncambered airfoil shape. If you want a camber add an arc instead of a line.

11) Repeat for all planes in chart below. (Chart 1) The drawing should look similar to (Fig 4) . The distance between each line and a smooth arc of the endpoints on each end of the lines.

Fig 4

12) Start at one end and slowly click each face, wait until the computer has completed its tasks and click the next face. Continue until each face has been selected then click on OK. When you have all the faces lit as below in (Fig 5), you can loft each section to the next. Again be careful to allow the computer to complete each loft prior to selecting the next face.

Fig 5

13) You should see a screen like Fig 6. Hide the sketches and construction planes and you should see Fig 7. https://www.youtube.com/watch?v=XkKTXKp-ziI&t=334s I added a radius to the upper edge but its up to you.

Fig 6

Fig 7

14) Click on File/3DPrint , select the model,and unclick send to 3D Print Utility. Click on OK. You should get a model like the one (Fig 8)(tesselated with triangles)

Fig 8

Save it as an STL file, send to a printing service or print on your personal printer

Fig 9

I got lots of help from John Kagan and others for which I am very grateful. There are many different ways to draw the blocks but this one is I think the easiest to explain.
If there are any questions or concerns post the on Facebook

Read More »

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1936 Indoor Records

In Uncategorized on May 1, 2020 by nicholasandrewray

Click here to download a PDF of the record sheet.

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Otto Hints 2014

In Uncategorized on April 10, 2020 by nicholasandrewray

                                                                               OTTO HINTS MEMORIAL 2014 SENIORS
                                                                             WORLD CUP F1D MARCH 30-31
                                                                                    SLANIC PRAHOVA
NUME LICENTA Tara 1 2 3 4 5 6 TOTAL
1 SURANYI BELA ROMANIA 24:52 28:30 27:32 28:46 30:02 0:00 58:48
2 PETCU DANIEL ROMANIA 17:55 20:14 21:40 24:09 22:26 0:00 46:35
3 ROBERT CHAMPION FRANCE 27:12 22:27 28:59 24:28 23:55 28:42 57:41
4 LINKOSALO TAPIO FINLAND 1:43 18:58 19:20 15:46 20:56 0:00 40:16
5 DIDIER BARBERIS FRANCE 31:06 1:10 34:00 28:13 0:00 0:00 65:06
6 THIERRY MARILIER FRANCE 24:38 27:19 22:46 27:12 27:54 1:20 55:13
7 MICHEL PILLER FRANCE 0:00 0:00 0:37 7:18 6:47 4:33 14:05
8 GAHER LUDOVIC ROMANIA 14:09 15:06 26:27 27:40 32:10 0:00 59:50
9 POPA AUREL ROMANIA 33:39 33:25 34:12 34:45 13:44 35:10 69:55
10 NICOARA VASILE ROMANIA 29:39 23:21 29:45 18:04 0:00 0:00 59:24
11 POPESCU MARIAN ROMANIA 29:39 29:42 27:39 29:16 29:52 0:00 59:34
12 SUKOSD ZOLTAN HUNGARY 28:58 34:26 31:43 32:26 35:10 0:00 69:36
13 BOTOS ISTVAN HUNGARY 27:34 28:59 30:10 27:37 0:00 0:00 59:09
14 REE ANDRAS HUNGARY 30:42 30:04 29:25 27:53 0:00 0:00 60:46
15 ORSOVAI DEZSO HUNGARY 29:55 31:50 31:47 33:48 32:37 30:29 66:25
16 BRETT SANBORN USA 35:49 14:46 34:30 0:00 0:00 0:00 70:19
17 JOHN KAGAN USA 32:03 31:06 29:56 0:00 0:00 0:00 63:09
18 YUAN KANG LEE USA 34:57 0:00 0:00 0:00 0:00 0:00 34:57
19 MARK BENNS ENGLAND 0:00 0:00 26:44 28:13 0:00 0:00 54:57
20 ANTHONY HEBB ENGLAND 28:47 0:00 31:38 0:00 0:00 0:00 60:25
21 DEREK RICHARDS ENGLAND 0:00 0:00 0:00 0:00 0:00 0:00 0:00
22 MANGALEA CORNELIU ROMANIA 30:21 35:49 35:01 35:46 29:59 35:39 71:35
23 AMORARITEI DAN ROMANIA 32:31 0:00 34:16 35:51 0:00 0:00 70:07
24 SOMESAN HORATIU ROMANIA 31:37 30:27 0:00 0:00 0:00 0:00 62:04
25 LUTZ SCHRAMM GERMANY 0:00 0:00 0:00 0:00 0:00 0:00 0:00
39 MERKT THOMAS GERMANY 0:00 0:00 0:00 0:00 0:00 0:00 0:00
40 TIM HAYWARD BROWN AUSTRALIA 22:55 22:06 12:43 7:24 27:30 24:29 51:59

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2020 Indoor NATs Schedule

In Uncategorized on March 6, 2020 by nicholasandrewray

Click here to download a PDF of the schedule.

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2020 Kent State Contest

In Uncategorized on December 19, 2019 by nicholasandrewray

Kent_2020_ContestV1 copy.jpg

Click here to download a PDF of the flyer

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DESIGN OF PROPELLER BLOCKS

In Uncategorized on December 19, 2019 by nicholasandrewray

Dima 1Dima 2Dima 3Dima 4Dima 5Dima 6Dima 7Dima 8Dima 9Dima 10Dima 11Dima 12Dima 13Dima 14Dima 15Dima 16Dima 17Dima 18.jpg

Click here to download a PDF of the article

 

 

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2019 Otto Hints Memorial

In Uncategorized on December 1, 2019 by nicholasandrewray

oh2019

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Stan Chilton’s Cat II Record Mini Stick

In Uncategorized on November 6, 2019 by nicholasandrewray

The Cat II  record has since been surpassed by Rob Romash, but the plan has not been widely available. It came to INAV as part of a gift of notes and documents from his estate and his published here with his family’s permission.

 

UFO Mini Stick.jpg

Click here to download a PDF of the plan.