Have you heard about the Coanda Effect? Well in this blog topic we shall discuss the same and the making of a flying saucer and it could give you some insight on your mechanical projects for the semesters.
Everybody gets mused by rumors. Rumors are interesting because there is some bit of truth in it. I was always mused by UFO sightings. Hundreds of sightings are reported each year across the world. Theoretically,never ending universe aliens should exist, that gives some strength to our hope of seeing a UFO. But we could never contact them or have any real evidence of their existence. What keep most of us interested in UFOs is the far more technological power they wield. Flying saucers are of special interest as they are quick and nobody knows what fuels them; so are they real?
Let’s know more about the Coanda effect:
Coanda effect is the tendency of a jet of fluid emerging from an orifice to follow an adjacent flat or curved surface and to intake fluid from the surroundings such that a region of lower pressure develops.
Nice definition I realised, but if you are anything like me who wants to be more precise you need to check videos online for a proper understanding.
So ultimately, the alien technology is ours and if you are an engineering student’ now you must know how to build a flying saucer.
- Brushless motor – 1 nos
- Speed controller – 1 nos
- Lipo Battery – 1 nos
- Propeller – 1 nos
- Receiver 5 channels – 1 nos
- Servos – 6 nos (4 and 2)
- Gyro piezo – 3 nos
- A 3 mm thick styrofoam sheet XPS.
- Some 1 mm diameter carbon rods.
- A brand new cutter.
- To glue the different parts, you need to use UHU Por or special foam Cyanoacrylate (CA) glue.
Instead of struggling with a Styrofoam you can use a lightweight plastic bowl. To metion,styrofoam is lightweight; there is a chance that the final frame you make might have some deformations which can adversely affect the flight of the flying saucer, so a plastic bowl is definitely better.
You need first to download the airframe plan online.
There are two proposed setups:
- The first is in DXF format (ces01plan.DXF); at full size (scale 1:1), to be used for CNC or CAD printers.
- The second is XPS format (CES01.xps), at full size (scale 1:1), ready to be printed in any A4 printer. You need to print the 35 pages and assemble them and build the plan at full scale
The main saucer frame is then finished with 8 curved petals sheets.The lateral control flaps are fixed with an
adhesive tape. The brushless motor is fixed on the top of the cupola via an epoxy disc.You have to cut the 24 rudders, four series of three rudders a fixed and four series of three rudders
are controlled by a servo.
Your Coanda Effect Saucer is soon finished.A streamlined body of 280 mm diameter and 60 mm height and placed at 45 mm above the hull. The streamlined body is made with a 3 mm thick foam and fixed with 8 carbon rods and height rectangular plates on the hull.
The balance point should be higher than possible and centered on the axis of the engine. The Lipo batterie is placed on the top inside the saucer.
Use full charged Lipo battery
For your first try, you must have no wind or a very light wind weather conditions.
Put the throttle as rapid as possible to the max power so as to overcome quickly the ground effect.
Then, at about certain height freom the ground, you might set the throttle to the hover value (middle power) and enjoy yourself to pilot your flying saucer.
A very brief oinsight is shared here.We conclude the discussion now.