WHY IS OUR PROJECT THE BEST?
There is nothing new or original about the idea of ”enlarging drones” for use as an aircraft for humans!
Now on the Internet there is information about the mass of projects, the creators of which are trying to implement this idea.
We have come up with a comprehensive approach to solving this problem!
In fact, we are creating a “universal platform” that allows us to create a device that is most suitable for the user. It is possible to “assemble” an apparatus with electric motors and an internal combustion engine (ICE) from identical units (flight control systems – a flight controller and electronically controlled variable pitch propellers).
Currently, electric transport is actively and very rapidly developing. The future belongs to him! But you need to fly not tomorrow, but today. And this is where the problem arises.
For the normal movement of an electric car, an electric motor with a capacity of about 100 kW is enough. And the battery capacity of 55-85 kWh is sufficient (considering that the full power of the motor is used only during acceleration) to operate the electric motor for 4-6 hours, a mileage of 300-500 km is provided. Which in most cases is quite enough, especially for driving in the city.
For a normal flight of a light aircraft with a weight of 650 kg, a propeller thrust of 150-200 kg is sufficient, which provides an electric motor with a power of the same 100 kW. But an airplane, unlike a car, flies at a constant power of 70-80% of the maximum. And a 55-85 kWh battery will only last for 30-40 minutes of flight. But this is more or less real.
But for vertical take-off and flight of an aircraft such as a helicopter or a copter weighing 650 kg, a propeller thrust of 750-850 kg is required! And here the power of the motors is 200-250 kW. Accordingly, a 55-85 kWh battery will only last for 5-10 minutes of flight.
Alas, this is too little for normal use.
But progress in battery development continues. And by the time suitable batteries appear, the rest of the technical solutions should be ready.
That’s what we do!
In our design, both in the version with electric motors and with internal combustion engines, the same flight control systems (flight controller) and electronically controlled variable pitch propellers are used.
We have created and tested their design.
Currently, we have created a device with an internal combustion engine. Since for financial reasons (while we are implementing our project with our own funds, without investors), the purchase of electric motors and batteries is still beyond our capabilities.
But if there is an investor, we will make and lift an electrical apparatus into the air as soon as possible. Since the most complex structural elements have already been created by us.
Moreover, our design makes it possible to create both manned vehicles, the control of which is available to almost any person, and in an unmanned version. For the delivery of goods up to 250 kg. In a patrol or agricultural version (for processing farmers’ fields, for example, for whom the use of large aircraft is economically unprofitable). And other use cases.
Our chosen scheme.
Almost all existing projects grew out of the idea of ”scaling” conventional small ELECTRO drones – quadro, hexa, octo and other copters.
Why do emerging projects have so many engines?
In the image and likeness of small drones that fly well.
But starting to increase the scale of the drone, the designers are faced with a problem – the DRONES DO NOT SCALE !!!
More precisely, the solutions to the problems of small drones are not applicable to large ones.
Because to control a small drone, you just need to change the speed of the corresponding engines.
But on a large drone, even with electric motors, it doesn’t work! Because It’s one thing to change the revolutions (and, accordingly, the thrust) of a small engine with a propeller weight of 5-10 grams, and another thing to try to quickly change the revolutions of a propeller weighing a couple of kilograms rotating at 3000 revolutions!
Inertia of the screws! ..
When you try to replace the electric motors with the internal combustion engine “head-on” – other problems appear – an attempt to quickly change the thrust of the internal combustion engine with “gas” is also not just solved … Again – the inertia of the engine !!!
Therefore, they begin to solve the problem head-on – to put a bunch of small electric motors with small screws.
The problem of inertia (and, accordingly, control) is partially solved …
BUT! .. There are a lot of other problems. But they are not so obvious. At least for now, these are prototypes. Not designed for practical use.
One of the problems is efficiency.
The efficiency of one motor per 100 kW is significantly higher than 10 motors of 10 kW.
Efficiency and thrust of one propeller with an area of 10 sq.m. much higher than 10 propellers of 1 sq. m.
That is, when trying to simply increase a small drone using a large number of small motors with small propellers, and so a small amount of energy in the battery is wasted on heating the surrounding air, and not on useful work!
Even for the carriage of one passenger in other projects, it is supposed to use 8-16 (!!!!) motors!
And if you need a device to transport a ton of cargo? 30? .. To put 50 engines?
In the version with the internal combustion engine, we create a twin-engine unit – because. this is a reasonable and optimal amount when using an internal combustion engine.
This amount ensures both flight safety (since heavy-loaded copter propellers do not autorotate) and acceptable readiness for takeoff.
Well, the thrust control of a twin-engine copter is possible using variable pitch propellers!
The best option for a copter is a twin-engine four-rotor copter, with an internal combustion engine and a pitch propeller!
This results in a universal circuit with a reasonable compromise in terms of the efficiency of the propellers.
In addition, our project provides for the possibility of rescuing the pilot even in the event of TWO engine failure – a parachute rescue system designed for parachute rescue of our aircraft at full load.
The Flying Bike (FB) is a 4-screw twin-engine aircraft equipped with a parachute emergency rescue system (PERS).
Why twin engine? Since the FB propellers have a significantly higher area load than the main rotor of helicopters, they are therefore incapable of autorotation. That is, in the event of an engine failure (if it is one), a catastrophe is inevitable.
But to improve flight safety, and to give the pilot the ability to land even if one of the engines fails, we use a twin-engine scheme. A certain complication and rise in the cost of the structure is completely covered by a significantly higher flight safety. Since the probability of a simultaneous failure of two engines (due to the “iron”) is very small. And flight safety is an absolute PRIORITY!
In addition, in our design, we provide for the use of a safe landing method – with a PERS parachute.
The use of electronically controlled variable pitch propellers is also justified!
In the end, most of the technical revolutions were also carried out by rethinking what was already known for a long time!
That is why in our project we are trying to use the possibilities of already known technical solutions in a new way!
Compared to existing aircraft – first of all, ease of use!
Which allows almost anyone to buy our flying motorcycle. The absence of the need for a long (and not for all successful) training in a flight school is a significant plus!
(We mean – for successful flights. If in your country it is forbidden to take any aircraft into the air without a license, even for sports and entertainment purposes, then you must decide the issue of the legality of flights in your country yourself).
Compared to prototypes of other startups promising to enter the market, an important advantage of our project is the versatility of the engine type!
Our circuit makes it easy to replace the internal combustion engine with an electric motor (when the appropriate batteries appear).
Or use a hybrid scheme, when powerful and lightweight generators appear.
Also a plus is (in comparison with electrical samples, with modern batteries) a significantly higher carrying capacity with a sufficient range. At the same time, if necessary, these indicators can be increased.
Therefore, let the development of electric transport go on as usual. After all, the future belongs to him!
But if you want to fly today, without waiting for the “future”, it makes sense not to discard vehicles with internal combustion engines, but, on the contrary, to apply to them the most advanced technologies that come from the development of electric transport.
It is this symbiosis that we use in our project!
Currently, the main problems of the project are related to financial issues, since we are implementing the project using our own savings, without the participation of investors.
Unfortunately, for these reasons, we have so far installed one engine on the prototype and no parachute rescue system has been installed.
Since the main task of the prototype is to work out the main idea and technical solutions – the correct combination of mechanics and electronics – long flights at the stage of adjustment and test flights are not provided. Accordingly, we have limited ourselves to one engine for now.
But this is only on the first prototype.
In addition, we are not yet able to create our own dedicated flight controller (for the same financial reasons). And they are forced to use the standard flight controller on the prototype, which is used on radio-controlled helicopter models.
In general, its capabilities are quite enough. and model helicopters hover in the air and the flight controller provides accurate positioning (using GPS). But for use in a serial sample, it is not suitable – too many settings before the flight need to be done through a computer.
On a serial sample, the self-diagnostics and settings should be like the process of self-diagnostics of the electronics on the car – “I turned on the ignition – the control lamps came on – when they went out – everything is in order” – you can start the engine and drive.
We want to do this in our flying motorcycle as well.
The technical requirements for the flight controller we need are ready.
As soon as the financial opportunity arises, it will be created and used in our flying motorcycle.
According to press reports, several projects are currently being prepared.
But almost all of them have inherent design flaws that prevent them from making a controlled flight. This is what we see in numerous videos on the Internet.
Therefore, real competitors in terms of the set of operational characteristics (important for the consumer) – payload, flight range, ease of refueling, etc. – our project does not have one today.