Today we will talk about how to make a boomerang with your own hands at home from scrap materials. We will also consider the methods and technologies for making boomerangs various designs with visual drawings and illustrations

The wings of a boomerang - when they rotate in the air - are capable of generating sufficient lift. This is due to the fact that the wings have a special aerodynamic shape due to their angle of inclination and beveled lower part.

But what is phenomenal in the flight of a boomerang is a process known as gyroscope precession - an effect in which the physical body changes the direction of its movement - the key moment in which the boomerang returns to the person who threw it

It is worth noting that the technique of returning a combat boomerang was used by warriors and hunters exclusively for training purposes, or as a method of some kind of intimidation

When a boomerang rotates in flight, one of its wings is actually moving slightly faster relative to the air flow. And since this wing has more high speed, then, accordingly, the lifting force under it acts stronger. The result of this is an unbalanced force (the phenomenon of precession), which gradually returns the boomerang."

In other words: The difference in lift between the two sides of the boomerang produces a consistent torque that reverses the swing. That's why the boomerang hovers in the air for so long and returns back, describing an arc.

How does a boomerang work - it is taken in the hand in a certain way and thrown with force at a certain angle perpendicularly upward, and the stronger the twist, the further and more powerful the throw and return to the starting point will be. So, you swing, throw a boomerang, but at the last moment you don’t completely release the hand, but suddenly, as it were, hold it and pull it back, as they say, “shake the thermometer.”
With a sufficiently powerful throw, at a distance of one hundred meters you can easily hit a dozing rabbit or knock down a partridge on a lonely palm tree. If you don’t hit, it’s not scary, the boomerang will fly back, just have time to bounce back (humor) Well, seriously, we won’t analyze the processes that lead to the flight of a boomerang to its accuracy of hitting and returning to the point of throw in the absence of one. Our goal is to properly manufacture this formidable weapon of the past.

To make a boomerang, you need hard types of wood, such as oak, birch, beech, linden, etc. To make it more aerodynamic and durable, you can cover the boomerang with fiberglass with epoxy resin, then sand and polish. The profile needs to be made slightly flat-convex, but do not overdo it, 8-12% is enough

You will need to make a boomerang with your own hands:

Sheet of cardboard;
Plywood or wood;
Varnish or paint;
Jigsaw;
Plane;
Sandpaper.

First of all, you need to draw the selected boomerang model exactly in life size on a thick and thin sheet of cardboard. It is recommended to choose a sheet size of 50x60 cm. After this, you need to transfer a grid with a square side of 50 mm onto the cardboard. From the resulting template, we cut out a blank from plywood. Its thickness is 10 mm.

Now you need to process the workpiece. This should be done with a small plane in a vice or using the device shown in image (d). The boomerang needs to be planed starting from the middle, moving towards the edges of the blades. Their end should end up being 6mm thick. The blades must be absolutely identical in shape. To simplify the task, you can make counter-templates of the blades from plywood and apply them to check the correctness of the shapes.

The surface should be completely smooth, so the next step will be sanding. For this you can use sandpaper. After sanding, the almost finished boomerang is coated with a primer, and then with varnish or paint. It is best to use bright paint so that the boomerang can be seen from afar and is easier to find when it falls. In addition, parquet varnish can be used for coating, which preserves the aesthetic structure of the product.

This is how you can relatively easily make a boomerang with your own hands in an hour or two. If possible, it is recommended to make a boomerang from wood. For this purpose, as a rule, bent branches and roots are used. It is important that the wood is dense, heavy and well dried. The following materials are suitable for making a boomerang: oak, birch, beech, linden. The manufacturing process is exactly the same as in the case of plywood. But it should be remembered that wood deteriorates much faster than plywood, so it must be varnished or painted especially carefully.

If you followed all the rules when creating a boomerang, then it will have excellent flight qualities and a beautiful appearance. We figured out how to make a boomerang with our own hands, now we need to figure out how to launch it correctly.

Launching a boomerang for the first time, despite all its apparent simplicity, is quite dangerous due to unpredictability, so some caution and attention will be required. You can hit someone with a boomerang, so you shouldn’t start experiments in crowded places. Optimal place to train agility and accuracy - a meadow or clearing with a radius of 40-60 meters (the more, the better). In a city, such a clearing could be a football field or a vacant lot.

The launch of a boomerang is specific in that its flight trajectory is a figure eight. Therefore, the person throwing the boomerang should throw it only from the center of the place chosen for training. The projectile will fly forward, making a loop in front of the thrower. He will then return and make the same loop behind the thrower, thereby forming a figure eight, the execution of which depends on several parameters - the force of the throw, the quality of the boomerang, the experience of the thrower.

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The boomerang has two main surfaces. The convex front side, on which, as a rule, a design is applied, creates its own effects when rotated. The back side, in most cases, is flat, you can also see a pattern on it, but with proper throwing, usually only the front side can be seen.
It is customary to hold a boomerang like this: thumb always lies on front side. Holding a boomerang correctly means holding it facing you and seeing the pattern clearly.
The boomerang can be held with both the wing backward and the wing forward. This is not important and in any case it is correct - whatever is more convenient for you.

Boomerangs can be light or heavy. You can determine the type yourself - your hand will tell you which boomerang you are holding.
A light boomerang in your hand needs to be fixed with three fingers - it is clamped with the middle, thumb and index fingers(It should be recalled that the thumb should always be on the front side when gripping correctly).

It is quite difficult to hold a heavy boomerang with three fingers, so it needs to be fixed in the fist, right up to the little finger, i.e. the grip comes out with four fingers, so the fixation is quite rigid. You can grab it deeper, but when throwing the boomerang it will be awkward to release, so it is not recommended to grab heavy boomerangs deeper than four fingers.

Many beginners subconsciously launch a boomerang, tilting it like a sickle used to cut grass, almost parallel to the ground. This is completely wrong. In a boomerang, the aerodynamics are designed so that throwing it correctly means throwing it almost perpendicular to the horizon, at the same time the inclination to the horizon line should be to the right of the imaginary perpendicular. The boomerang should be released at an angle of no more than 45° to the horizon during the throw.

You can come to this experimentally on your own - if the boomerang is tilted too much, it will fly up sharply, and then also dive sharply to the ground in front of the thrower. If the throw is made at an angle of more than 45°, the boomerang will never even come close to returning to the thrower.

The boomerang should be thrown sharply and forcefully. When launching a boomerang, you need to take into account the fact that the projectile requires force not only to fly away from the thrower, but also to travel back and loop behind the thrower. Therefore, you should throw extremely hard and sharply, especially if you use a real one for training. wooden boomerang, and not a toy plastic copy. As a rule, the first throws are timid and cautious, especially if a woman or child is throwing. But don't be afraid! Any high-quality boomerang is designed for a powerful throw, because if you throw it weakly, this will lead to its rapid fall somewhere along the trajectory, which is not very good for it.

You need to throw the boomerang straight in front of you, looking and focusing on the horizon line. There is no need to throw the boomerang up - it is better to throw it straight forward, because the design of the projectile is such that it will independently gain the required height.
During the first throws, a situation may arise that you, as it may seem to you, are throwing the boomerang sharply and strongly, but it still flies smoothly, without twisting as required. In this case, you need to master some spinning skills. If you throw the projectile correctly, it will spin as quickly as a propeller - the pattern will merge into a solid circle, the blades will not be visible. To ensure maximum spin, a good grip is essential. In addition, the boomerang should not be buried too much in the fist.

There are many ways to spin a boomerang, but we will focus on the simplest and most common.
So, we swing and throw sharply, but at the very last second before the boomerang comes out, you do not let go of your hand completely, but quickly stop it, as if pulling it back. Many of us have used a mercury thermometer, so this movement is familiar to everyone - it completely replicates shaking the thermometer.
With such a throw, we leave a kind of trip for the boomerang, cut off the running leg and he, stumbling, rolls head over heels. A boomerang twisted with such a stopper will twist more strongly.

We figured out how to launch a boomerang, but we should also take into account the wind. Wind is almost the main factor that influences the flight path of not only a boomerang, but also of all flying projectiles and devices. Its influence should be taken into account when throwing no less than the force of the throw and the correct grip. If the wind is very strong, sharply changing direction and strength (intermittent), it is better to postpone the training and practice the theoretical part again.

It is better to start training in calm, windless weather or in light wind that does not change direction. If you are making throws in the wind, then it is recommended to direct the throw towards the wind slightly to the right of its movement. With such a throw, the wind will help the boomerang return to the thrower. Among other things, the wind has a strong influence on the accuracy of the return of the projectile, because the behavior of any aircraft depends on the available air currents. You can make friends with the wind, but this comes only with experience and after numerous trainings. It is simply impossible to comprehend this art the first time.

Much lighter “shells” are now used for sporting and recreational purposes. They are practically safe, although some precautions must be taken when launching them. The best material for the manufacture of a sports boomerang, five-layer alder plywood with a thickness of 6 mm must be considered (for smaller sizes, which differ significantly from those indicated in our drawings, it is necessary to find a correspondingly thinner material). After processing the sheet blank along the contour, it is carefully profiled.

By the way, from last operation, the thoroughness of its implementation and accuracy largely depend on all the flight properties of the future boomerang, so it is better not to waste time and, if unsuccessful, start the job again. If the boomerang's profiling turns out to be an “A”, they begin sanding and varnishing the wood. Finishing is with bright oil or nitro enamels. If there are no significant deviations in shape from those indicated in the figures, no additional debugging is required.

It should be noted right away that the military projectile originally created by distant ancestors, called a boomerang, is not necessarily returned. Special types boomerangs were not designed to go on a reverse trajectory at all and were so called because they had the main classification features - rotation in flight around a transverse axis and lengthening the flight range due to aerodynamic (gliding) properties. The returned boomerangs were used mainly for hunting small animals and birds.

Much lighter “shells” are now used for sporting and recreational purposes. They are practically safe, although some precautions must be taken when launching them. The best material for making a sports boomerang is five-layer alder plywood 6 mm thick (for smaller sizes, which differ significantly from those indicated in our drawings, it is necessary to find a correspondingly thinner material).
After processing the sheet blank along the contour, it is carefully profiled. By the way, all the flight properties of the future boomerang largely depend on the last operation, the thoroughness of its implementation and accuracy, so it is better not to waste time and if it fails, start the job again. If the boomerang's profiling turns out to be an “A”, they begin sanding and varnishing the wood. Finishing is with bright oil or nitro enamels. If there are no significant deviations in shape from those indicated in the figures, no additional debugging is required.
When launching a boomerang, use practical advice our publication, reflected in the figures. In conclusion - about possible circuit options. Search interesting solutions is not limited only to the choice of shape and size. To a large extent, flight performance depends on the material of the boomerang. For example, a multi-bladed “daisy” design in combination with the use of foam plastic can lead to the creation of... an indoor version, the flight range of which does not exceed three meters.

Take a sheet of thick paper and apply a grid on it with a square side equal to 50 mm. The side of the boomerang facing the reader is convex. Carefully transfer the contours of the model from the drawing and cut out. You have received a template. Check the symmetry of the shoulders by bending it along the OA line. The contours of the shoulders should completely match. The best and perhaps the most available material for making a boomerang - plywood. Using rubber glue, glue the template onto a sheet of plywood so that the outer layers of plywood are perpendicular to the axis OA. Using a jigsaw, cut out the outlines of the boomerang's arms.

All subsequent processing is performed on one side only. The other side should remain flat. Using a flat file and calipers, achieve a smooth reduction in thickness from the middle to the ends. Once you've done this, start profiling. This is perhaps the most important part of the work. Cut out counter-templates from tin or thin plywood for each section shown in the figure. Perform profiling using semicircular and flat files, and then sand the entire surface. Round off all sharp edges. .

Treat the surface of each shoulder carefully; the flight qualities of the boomerang will depend on this. Use counter-templates to check the correctness of the resulting cross-sections against light often. It is also very important to carefully balance the boomerang. To do this, hang it on a thread,
attaching it to the OA section: none of the shoulders should outweigh. If one shoulder appears heavier than the other, the cause must be determined. This can be caused either by improper processing or by inhomogeneity of the plywood. In the first case, balance is achieved by filing down the heavier shoulder, in the second - by embedding a small lead rivet into the edges of the light shoulder. The embedment site must be carefully leveled with the plane of the shoulder.

We warn you: a flying boomerang poses a danger not only to the thrower himself, but also to those around him. It's best to run it on a large scale. An open area or lawn, keeping spectators as far away as possible. To make the model more visible, apply bright stripes of different colors to the shoulders. The necessary water resistance can be given to it by covering the surface of the shoulders with colorless varnish. Paint the finished boomerang several times with bright oil or enamel paint.

How to make three and four bladed boomerangs with your own hands

Material of manufacture - medium and heavy types of wood, oak, linden, birch, beech, etc. In fact, it is difficult and not advisable to use plywood for this scheme. In the middle of the two blades, grooves are cut into different sides, after which they are glued together with PVA glue or carpentry glue, in general, any glue is enough strong glue for wood. For greater strength, they can be connected with small screws.

Usually it is proposed to make mainly L-shaped boomerangs. In my experience, L-shaped boomerangs are significantly inferior to + (cruciform) ones in absolutely all characteristics. They don't fly that far. They must be thrown at a strictly defined angle with one specific force so that it returns exactly back. The time spent in the air is one and a half times less.

The flight of a boomerang is an amazing sight. With a strong throw, in flight it describes a large loop, flying far upward - forward and returning back. If you throw a stone with exactly the same force, it will not fly even a third of the distance that a good boomerang flies. You can take the boomerang with you on active holidays. You will get a lot of interest from such a vacation. You can work with him like sports equipment during physical education and sports, developing arm muscles, coordination of movements, etc.

I recommend launching a boomerang, especially a sports one, only on large open areas, in less windy weather, in the absence of people nearby. If there are buildings nearby, the glass may be broken or the shell may fly onto the roof somewhere. If people walk nearby, they might get a teapot. Above are diagrams of amateur boomerangs. Sports are different large sizes and mass.

How to make the perfect boomerang with your own hands:

Make the blades wider as this increases the number of rainoldos.

Elongating the blades more will reduce the inductive drag.

Concentrate the mass at the ends of the blades, this increases the rotational energy reserve

Reduce the number of blades, this will reduce the harmful interaction of the blades

If you do all this, you will get up to a 20% increase in flight data.

The result is a diagram of a two-bladed straight boomerang, similar to a helicopter propeller. But a two-bladed one will be absolutely unstable, and the use of a stabilization scheme is not justified. The three-blade design meets all requirements. If you give the blades a backward sweep, the induced drag will decrease at high angles of attack; this happens at the moment the flight path changes. And rotational energy will not be lost at supercritical angles of attack.

It's summer time and active recreation in nature!

When I was 13-16 years old, my dad and I made a boomerang (then I made a second one myself). This topic is of interest to me to this day, which we will discuss further.

From the background:

As a child, in some magazine I saw a boomerang with a drawing and instructions on how to make it. My dad and I got excited about this idea and made a boomerang. It was a “classic” boomerang (well, like the Australian aborigines;), because it was their weapon). This is the boomerang we got. Its wingspan was approximately 50-60 cm.

We made a boomerang from 10 mm thick plywood (both the first and the second).

After we turned the blades and gave them the desired shapes and proportions, we filled in some of the recesses and painted them. The boomerang became a little heavier.

As I remember now, we went to the tests)))....
We had a clearing not far from our house. It was very large, a house was being built on the outskirts. People had vegetable gardens, and in some places reeds grew.

Learned to throw a boomeran He returned, but returned with such force that once flying through the reeds he mowed them down, mowed some potatoes in the gardens)))), Once he returned, so far (he returned 100 meters back from us) that from all over crashed into the house, fortunately not into the window.... the neighbor jumped out with horror and round eyes, hearing a strong bang.

As a result, this boomerang broke when it hit a stone. But we gave plenty of pranks :)

Then I made a second one! I lost it, or rather I didn’t find it;) - in windy weather it flew into the wheat. The search was unsuccessful.

What do I want to say?

Boomerang is a fun and interesting “toy” for both children and adults!

On the Internet, I accidentally came across a scanned copy of the magazine, the drawing from which I made the first and second boomerangs, which prompted me to write this article

Here is the pattern that needs to be transferred to plywood

It is better to make a boomerang out of wood. Usually strongly bent roots and branches are used hard rocks woods such as beech, oak, birch and linden. It is important that the wood is dense, heavy and well dried. If there is no such piece of wood, then we use plywood.

For convenience, we fix the boomerang blank on the frame with clamps and proceed to processing with a plane or rasp, and then with a file.

The boomerang's blades should resemble a "propeller" on one side and be smooth on the other. We process as shown in the figure, observing the dimensions and cross-section. Toward the ends, the boomerang blades become thinner to 6 mm. In the center - the thickness of the boomerang is 8 mm.

After you have processed the workpiece to its final state and all proportions and dimensions have been observed, you can begin sanding it with sandpaper. The boomerang should be completely smooth and without roughness.

We coat the boomerang with varnish in 2 layers. You can start testing immediately after the varnish has dried, or before coating with varnish to check the flight qualities. Maybe we'll have to do some more work.

How to properly launch boomerangs

The boomerang is launched strictly in a vertical position (and slightly upward) right hand from behind the head so that the convex side of the boomerang should be on the side of the thumb.

If the weather is windy, then the boomerang should be launched into the wind; if it is into the wind, then it may not return.

This is the approximate flight path of the “classic” boomerang, which I wrote about above.

There are also four-bladed and three-bladed boomerangs and they belong to semi-sports and sports

The pictures below show how to make these boomerangs. I also had a cross-shaped one (four blades) - this can be made even from 2 wooden rulers. Its flight radius was 20 meters, and if it was launched too hard, it could make 2-4 circles and return. It’s also easy to make - from 2 wooden plates(or from a single piece of plywood or wood). The wing profile is exactly the same shape.

More options with boomerang sizes

There are also a large number of forms, so to speak, designer boomerangs

For example, this boomerang pattern... maybe someone will like it))))

It's up to you to decide which boomerang to make!

During testing and further launches, safety precautions should be observed, because This is still a throwing weapon:

Here is the permanent address of this article:

I wish you a good time during the warm season, and I wish you creative ideas!

Since ancient times, boomerangs have been used for hunting and protection. Scientists have proven that even in zero gravity, the principle of operation of a boomerang does not disappear, and this makes it a toy for the whole family, as well as a very convenient weapon for hunting, because if you have to go after your throwing projectile every time, it will not add strength to you.

Boomerang throwing rule

To make the boomerang rule work when throwing, hold it vertically, pinch the rounded end with your finger and launch it just above the line of the throwing hand, calculating the correction for the wind.

Rule and law of boomerang

Rule: a – angle relative to the vertical, b – angle relative to oncoming wind gusts, c – angle relative to the horizon.

Diagram: To see and feel the boomerang law in action, the boomerang should not only be thrown correctly, but also caught. In order not to injure your hands, put on gloves and grab it like a frisbee - by slamming it.

Making a boomerang from plywood

Instead of buying a cheap Chinese boomerang, you can easily make your own. To do this, cut out a piece of cardboard according to the diagram below, place it on plywood and cut along the contour with a jigsaw.

The thickness in the center should be eight millimeters; the edges should be sanded down to reduce the thickness to 6 mm. The main thing to remember is that you need to clean one side, while the other side should remain flat. When cutting, make sure that the arms of the boomerang are equal.

Boomerang made of wood

To make a boomerang, you need to choose a heavy type of wood, such as oak, linden or birch. Then, according to the diagram below, make a boomerang with blades from 25 to 30 centimeters, make grooves in them and seal them with superglue so that neither of the two blades weighs more than the other.

Throwing a boomerang is an exciting activity and an excellent option for active recreation. There are several basic models of this air projectile - classic, three- and four-blade. In our article we will talk about how to make at home from available materials the most elegant traditional L-shaped boomerang, striking with its exquisite smooth lines. You will see - it is very simple.

You will need:

• Sheet of plywood 8 mm thick, size 370 x 370 mm;
• A sheet of thick paper of the same size;
• Scissors;
• Jigsaw;
• Rubber glue;
• Flat and semicircular files;
• Sanding paper;
• Varnish and paints on wood.

Show others

Best material to make a boomerang, from which the Australian aborigines actually carved it, used wood. However, it is quite possible to use thin plywood– finding an unnecessary plywood box is not difficult at all. In the diagram, each cell has a side of 50 mm. Therefore, to make a boomerang, you need to take a piece of plywood measuring at least 370 x 370 mm.

Sequence of work

Visual aid

In conclusion, a video on how to make a boomerang. The process of sanding and painting it is shown.

Attention!

Remember that even such a seemingly harmless toy, made of hard material, is a real weapon and can injure others, and in unfortunate circumstances, even lead to death. Train in open spaces, in the absence of strangers.

Good luck with your launches!

With its help, ancient people could hunt much more successfully than with a stone. Such a device could fly much further and hit harder, and besides, the boomerang can return back if it failed to hit the target. Also, with the help of a boomerang, you can completely defend yourself from enemies if you master the launching technique perfectly. Today, the boomerang is mainly used in sporting events, as a hobby, and it has also become an integral part of decoration.

Making a boomerang is not difficult, because the aborigines knew how to make it, without having any materials or tools at hand, they did not even understand by what laws the boomerang works. Nowadays, this task will be easy even for novice DIYers.

The boomerang discussed below is capable of returning back with a probability of 90%. Of course, a lot also depends on the launch technique. Once you gain experience, you can teach how to make high-quality boomerangs in a short time. You just need to choose the right wing angle. It is important to note that launching a boomerang can be quite a dangerous event and no one should distract the person. When returned, the boomerang can easily injure you.

Materials and tools for homemade:
- protective impregnation for wood, as well as paint;
- wooden slats.

Tools you will need: a knife, a hacksaw, a pan of boiling water, a brush, PVA glue (or best of all, epoxy resin), masking tape or electrical tape, wood files (regular and rasp).

Boomerang making process:

Step one. Boomerang device
The boomerang is made from wooden slats, pine or birch will do. In the latter case, the boomerang will fly further, but it will also be more painful to catch. The author was inspired to make a similar boomerang by the logo Assassins games Creed.

As for the sizes, they were chosen randomly. The width of the blade is equal to the width of the selected rail. The author improvised the rest of the collection. As you can see in the drawing, to create a boomerang, three parts need to be sawn off from the rail.

Step two. Cuts on the rail
After the slats are cut, you need to mark the cut locations on them, as can be seen in the diagram. Next, you need to make slits along these lines using a hacksaw. The depth of the slots should be half the thickness of the slats. The slots should be smooth, without distortions. Slots are made on both sides, as can be seen in the photo.

Step three. Making grooves
The next step will require a knife. Use it to carefully break out the wood at the cut points. The depth of the groove should be slightly less than half the thickness of the slats. On final stage The grooves need to be thoroughly processed with a file, the result should be a flat surface.

Step four. Assembling the parts
At this stage, the author tries to assemble three manufactured parts into a boomerang. In the end, everything should turn out as seen in the photo.

Step five. Making boomerang wings
In order for boomerang wings to have lift, they need to be shaped like an airplane. To understand how to do this, we suggest looking at the photo and drawing. It is very important not to confuse the sides.

In order for the boomerang to return back, its wings need to be given a special bend. This bend is made from the convex part of the wing. The stronger this bend is, the faster the boomerang will return back, that is, the flight radius will decrease. To bend the blades, the wood needs to be steamed in a water bath. That is, you need to hold it over boiling water. Next, the wings can be bent around a cylindrical object, such as a bucket.

Step six. Boomerang assembly
The boomerang is assembled using glue. Of course, you need to dry the wood before doing this. Before gluing, the grooves must be thoroughly cleaned with a file. Any type of glue for wood is suitable as a glue, it can also be PVA, but epoxy is best. The author clamped the boomerang with clamps; their traces can be seen in the photo. You can hold a boomerang in a vice between books, for example.

After gluing, there will be seams on the boomerang; they need to be sealed using small sawdust and PVA glue, making a kind of putty. You can also seal these seams with epoxy resin, but it will be much more difficult to process.

Step seven. Preparing for painting and painting the boomerang
Now the boomerang can be prepared for painting. First you need to carefully sand it with sandpaper and a file. It is necessary to achieve perfectly smooth and flowing shapes, only in this case the boomerang will clearly return to the throwing point. The hole in the center was enlarged and made round.

To prevent the boomerang from absorbing moisture and, as a result, cracking, it must be painted or coated with colorless varnish. A colorless protective impregnation for wood is also suitable. Besides everything else varnish coating will make the boomerang more streamlined.
this time the author decided to paint his boomerang in different colors. To make such patterns, the boomerang needs to be covered with electrical tape and then painted. After painting, the boomerang is left to dry on a sheet of plywood. In order not to smear the paint, the boomerang rests on three nails, which are driven into the plywood with their points up.