Archive for the ‘Uncategorized’ Category

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Round Valley Dome 2021 Results

In Uncategorized on May 4, 2021 by nicholasandrewray

Click here to download a PDF of the results

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15th Pikes Peak Ceiling Climb – March 21, 2021

In Uncategorized on April 19, 2021 by nicholasandrewray

15th Pikes Peak Ceiling Climb – March 21, 2021

Manitou Springs High School – Category I – Manitou Springs, Colorado

Don DeLoach, CD

Thanks to the Manitou Springs School District for allowing use of their
large gym as our “lifeboat” site for the 15th PPCC. Next year we hope to
return to the 37′ Colorado Springs Auditorium. This year the Aud. was
being used as hospital for COVID-positive homeless.

I want to first thank my very helpful friends at the CD table, Mark
Covington and Sean McEntee. Neither of these guys were PPCC contestants,
yet they selflessly devoted most of their Sunday to helping out!
Amazing, and much appreciated.

We had a great contest with some very fun flying. With 20 paid flyers
there was often periods of 10 or more airplanes in the air at once. My
best LPP flight survived two midairs and multiple dicey steers.

Chuck Andraka brought a large group of Youth up from Albuquerque, and
they cleaned up against the “experts.” Congrats, folks! Notable
performances were put in by Quinn Sorbello in hotly-contested LPP and
Monet Ramacciotti who set a Sr. record in F1M.

Rob Romash won Grand Champ for about the tenth time with a perfect score
of five firsts. Congrats Rob!

Please consider attending next year. We are working hard to keep indoor
alive in the Mountain West, but we need your support.

–DD

HLG
Don DeLoach     25.2+24.5       49.7
Rob Romash      23.2+21.3       44.5

Towline Glider
Don DeLoach     33.6+29.6       63.2
Rick Pangell    17.5+15.7       33.2

SCLG/UCLG combined
Rob Romash      21.8+24.3       46.1
Quinn Sorbello  21.1+21.3       42.4
Don DeLoach     17.4+20.0       37.4
Rick Pangell    15.9+17.3       33.2
D. Aronstein    15.2+16.6       31.8
Jerry Murphy    17.2+13.1       30.4

Tiny Glider
D. Aronstein 2.375″  12.0+11.9  23.9
Rob Romash          14.1+6.8    20.9

FAC No-Cal Scale
David Aronstein 6:01
Rick Pangell            2:53
Don DeLoach             :58

FAC Peanut
Don DeLoach             Fike    114
Rick Pangell            Fike    63

FAC WWII No-Cal Combat
David Aronstein  Gloster        1st
Don DeLoach       Spitfire      2nd
Rick Pangell      P-40          3rd

Limited Pennyplane
Quinn Sorbello  (Sr)    6:55
Don DeLoach             6:36
Anjulie Sorbello (Sr)   5:46
Josiah Rose (Sr)        5:45
Pete Steinmeyer         5:25
Rob Romash              5:23
Hannah Rose  (Jr)       5:18
Chuck Andraka           5:11
Rick Pangell            3:41
Jerry Murphy            3:32
John McGrath            3:23
Elijah Rose  (Sr)       2:23
Monet Ramacciotti  (Sr) 1:15
Montana Ramacciotti (Jr)        :49

Scraps
Josiah Rose             4:34
Michael Rose            3:50
Chuck Andraka           3:39
Elijah Rose             3:34
Monet Ramacciotti       3:27
Montana Ramacciotti     3:09
John ?                  1:48

Easy B
Rob Romash              5:48
David Aronstein 5:12
Pete Steinmeyer         5:10

Ministick
Rob Romash              5:10

P-18
John McGrath            1:51
Skilly DeLoach          1:40
Chuck Etherington       1:28
Darold Jones            1:25

Phantom Flash
Don DeLoach             4:17
Chuck Etherington       3:28
Rick Pangell            2:40

Phantom Flash Mass Launch
Don DeLoach             1st
Chuck Etherington       2nd
Rick Pangell            3rd
Jerry Murphy
Rob Romash

A-6
Rob Romash              4:43
John McGrath            4:13

F1L
Rob Romash              5:34

F1M
Monet Ramacciotti (Sr)  3:48*
Rick Pangell            1:21
Chuck Andraka           :37
*pending AMA record

P-18 Mass Launch
Skilly DeLoach   1:40   1st
Darold Jones            2nd
John McGrath            3rd
Rick Pangell            4th
Chuck Etherington
Monet Ramacciotti (Sr)
Montana Ramacciotti  (Sr)       
Rob Romash

Grand Champ – Colorado Cup
Rob Romash              17 points (5 1sts)
Don DeLoach             16 (5 1sts, 1 2nd)
David Aronstein 12 (3 1sts, 1 2nd, 1 5th)

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2021 NATs Schedule

In Uncategorized on January 25, 2021 by nicholasandrewray

2021 NATs Schedule

The Detroit Balsa Bugs and the Cloudbusters Model Airplane Club are honored to host the 2021 Indoor Nats at The UWM Sports Complex in Pontiac, Michigan. The contest will run from Tuesday, July 20, to Friday, July 23, 2021.

It is hoped that holding it close in time to the Outdoor Free Flight Nats will encourage Free Flighters to take advantage of attending both contests, reminiscent of years passed.

The site is an outstanding venue for Indoor Free Flight. It has a 72 foot ceiling with 66 feet to the bottom of the girders. Floor area is an impressive 80 by 125 yards; a full sized regulation soccer field with a runoff.

Measures to secure the building from drafts will be in place.

There is a food court, conference rooms and lavatories all within this complex.

The complex is relatively new and is neat, clean and in a safe neighborhood. There is ample, lighted parking adjacent to the flying site, which is designated as “Building 3.”

This site has been the location of many “Indoor Fling” contests run by these two clubs with excellent results.

Click here to download a PDF of the schedule

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Walkalong Glider Postal Event

In Uncategorized on January 7, 2021 by nicholasandrewray

The Event will run through 2/28/21

The Hallway Harrier Lightweight Walkalong Glider

Introduction by David Aronstein

As we are now in our 2nd Indoor season to be impacted by the coronavirus pandemic, here is another building project and flying challenge that you can accomplish in your home.  This one is a Walkalong Glider.

Walkalong gliding is slope soaring, over a moving slope.  The slope is typically a cardboard or foamcore board, held by the ‘pilot’ who is walking behind & keeping the slope under the glider.  Most of my walkalong gliders are semi-scale stick-and-tissue models, fun to fly in larger areas but too fast for a house.  This one is designed to fly easily in your house or apartment.

The Hallway Harrier is named for the bird, not for the VTOL jet fighter (which was named for the bird).  Harriers are efficient gliders, like hawks.  As they cruise low over the fields, hunting for prey, their flight is a little bit like the flight of walkalong gliders. (Although they manage to do it without the help of a board!)

Building the Hallway Harrier

Build the Hallway Harrier just like any small Indoor FF model – ministick, parlor mite, Scraps, etc.  Main construction material is 1/32” square.

Wing: I like to use fairly deep camber.  If you have your own favorite airfoil, you can use that instead.  The plans show spliced dihedral joints, but feel free to make them by whatever method works for you.

Tail: The vertical tail spars are 1/32” x 1/16” for added strength and stiffness, because of the T-tail configuration. The top rib of the vertical tail is exactly the same length as a horizontal tail rib, as you will mount the horizontal tail to it.  The lower vertical tail rib is a little shorter.  The vertical tail is a bit unique, in that you only cover part of its span.  The part below the lower rib is just there for height, and should not be covered.  Also, be sure to build in the full –8 deg tail incidence as shown on the plan!  Walkalong gliders need more incidence than regular free flight models.

Assembly: After all the flying surfaces are built and covered with your favorite film, assemble in the following sequence.  First mount the horizontal tail to the top of the vertical, gluing securely on all of the contacting surfaces.  Make sure it is square as viewed from the top, and from the front (or back).  Then mount the vertical tail to the side of the fuselage, making sure it is square as viewed from the side.  Finally glue the wing to the top of the fuselage, making sure it is level with the horizontal tail, when viewed from front or back. If you absolutely don’t feel right building an indoor model without wing posts, go ahead and mount the wing on posts.  But keep them short (1/2” or less).

Click here to download a PDF of the plan.

Flying the Hallway Harrier

Trim for a smooth glide.  Noseweight is the primary adjustment.  A very slight stall in the ‘free glide’ is OK, as the influence of the board may correct that.  The goal is a straight glide.  If your model has a strong natural turn in one direction, add a small rudder tab (~1.5” high x ¼” chord, 1/64” sheet) to correct it.  

Now for the board.  There are two primary ways to launch; experiment to see which works best for you.

Walking start: Hold the glider 6” to 12” above, and with the wing 6” ahead, of the top edge of the board.  The board angle must be steep, at least 45 degrees.  Now walk at approximately the same speed as the free gliding speed.  Point the glider’s nose slightly down, and release the glider.  If the speed and launch attitude are just right, you are flying!  If the glider immediately gets ahead of you, try it faster next time.  If the glider immediately falls back behind the board, try it slower, or point the nose down more.

Free Glide start:  Alternatively, launch the glider from as high as you can reach into a free glide, then come up under it with the board.  This may be easier if you are having a hard time finding the correct speed for the first method.  As with the first method, the board must be steep.  Do not approach the glider from behind; this will only push it into a dive.  You have to come up from below the glider.

Once you get it flying, work on maintaining altitude and making smooth corrections from any disturbances.  Then work on turning, and climbing.  You turn by sliding the board to the side you want the glider to turn away from; possibly yawing and/or rolling the board as well.

My prototype initially had a taller vertical tail, fully covered.  It was very tricky to steer because once you got it turning, it would turn too much, often flying right back into the pilot or the board.  After modifying to the configuration shown on the plan, steering is much better.  Nevertheless, it is good practice to plan ahead:  as soon as you start a turn, start planning how and when you will come out of it.

Avoid the following common mistakes:

  • When launching, always hold the glider from behind and below.  A common mistake is to try to launch it with one’s hand above or in front of the glider, which often results from picking up the glider after a landing.  The pilot’s hand will disturb the airflow and prevent a successful launch. 
  • Keep the board steep.  Learn to recognize and avoid the common tendency to flatten the board.  You get no lift with a flat board.

Finally, since many of us Indoor modelers are fairly ‘mature’… take it easy!  This is great exercise – walking, coordination, balance, mental focus – but don’t overdo it initially.

Challenges

A straight duration contest does not really work, since walkalong gliders can theoretically stay aloft indefinitely.  So here are a few challenges to work on:

  • 30 second flight
  • 60 second flight
  • Closed course, 3 laps.  (It gets hard when you start Lap 2 and encounter your own wake!)
  • Inflight handoffs from one pilot to another
  • Flying without a board, using just your hands / head / body to generate slope lift.
  • Design & build your own walkalong glider.  This is not a one-design contest!  The Hallway Harrier is offered as a design to get you started.  There are no limits on design or construction.

Complete as many of the challenges as you can.  NFFS and/or INAV will host some kind of scorekeeping.  Details are TBD but should be released with this article.  If there is enough interest, we may follow up with more advanced competitions.

Designing Your Own

Short-coupled, high-tail models, and tailless models, are easiest to trim ‘on the board’.  Traditional FF configurations with long tail arms usually experience too much nose-down trim change because the tail, being closer to the board, gets more updraft than the wing.  Also walkalong gliders need more decalage than regular FF models, typically 6 to 10 degrees.  Besides basic longitudinal trim, you want the model to be easily steerable, which depends on the balance of vertical tail area and dihedral.

If you have a spare Scraps wing & tail – turn it into a walkalong glider!  You might be able to fly one on a large board as-is, just swapping out the prop for some noseweight.  But it will be easier to fly if you turn it into a T-tail configuration, bring the wing down closer to the fuselage, and of course take out all the turn adjustment. Be the first to send in a video?

Additional References and Resources

You can find a lot by searching for “Walkalong Glider” in Google or YouTube, but here are a couple of the most useful sites:

Slater Harrison’s walkalong glider site: https://sciencetoymaker.org/walkalong-glider-airsurf-air-surfing/ – patterns for paper and foam gliders, building and flying tips, foam sheets and pre-made gliders available to order (nonprofit and supports physics education!).

Phil Rossoni’s walkalong glider site:  https://sites.google.com/site/controllableslopesoaring/ – designs, building and flying instruction, science project ideas, contest / game ideas, and videos.  Several of my plans are on Phil’s site in the “stick and tissue” section.

David Aronstein, “Walkalong Gliders,” in the 53rd Annual Report of the National Free Flight Society, Symposium 2020, pp. 101-116. (Copies available from NFFS Publications Services; email nffspubs@yahoo.com).

National Free Flight Society (NFFS) YouTube channel: https://www.youtube.com/channel/UCucmaPRq2ws6rRTMHX_38YA

Indoor News and Views (INAV): https://indoornewsandviews.com/

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Rantoul Columbus Day 2020 Results

In Uncategorized on October 23, 2020 by nicholasandrewray

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Float

In Uncategorized on July 22, 2020 by nicholasandrewray

Float is available for rent or purchase on iTunes

Congratulations to all involved for getting to this point!

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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.