Four Wings Rc Helicopter Or "What is a quadrocopter"?

There's always something new under the sun! You never stop learning and that's a good thing. For several years there has been a never-seen kind of models: the quadrocopters. This is a kind Helicopter or VTOL aircraft with four propellers arranged crosswise, pointing upward.

The operating principle
The principle is simple and has even been successfully implemented in the 1920s in large aircraft. Together generate the propeller (or rotors) enough thrust to keep the aircraft in the air. Now is crossed pairs changed the thrust of the rotors, will also change the air movement. We can provide at normal Plane Pitch, roll and yaw. And when the thrust of all four rotors is changed uniformly rise or even fall. All we need to fly!

Changed the thrust is not as for RC Helicopter via a swash plate, but mostly by the simple change of speed. More speed is equal to more power, less speed means less thrust. This makes the mechanism very simple.

The problem in the past
But the structure is so simple, so complicated is the maintenance of stable attitude. Because such a device has no natural stability. Any small disturbance - by a gust, for instance - must always be controlled by hand. But that can hold no pilot in the long run, even if he could always respond quickly enough. Therefore, it was also the original from the 20s is not developed.

The solution: computer :-)
But today we have the little helpers are available: the computer! So untenable a few tinkerers built into the simple mechanics, which is only from four engines with four controllers and three piezo gyro (one for each axis, one for the recognition of the position change) - a microprocessor that compensates for any changes in position immediately by influencing the thrust of the rotors . What is not in itself stable in the air, by Computer . And the fellow that makes it faster and more accurate than a human ever can.

Modern RC Quadrocopter
Meanwhile there is this Quadrocopter to buy ready-made and they should also work really great! They are used except for fun, for example, for aerial photography. Together with a GPS receiver on board, they can even be positioned extremely accurately. And without that the pilot controls really, he just needs to enter the coordinates. Here we model flyers are apparently even more than the man carrying flying.

No wonder then that, unfortunately, unfortunately, the military gets something sharp. Apparently, many armies have such Quadrocopter already in their arsenal, whether it comes to spying or even by remote control to shoot people dead. Oh Jeez, because such a frenzy never end?

RC Helicopters for Beginners - What do you need?

Every beginning is difficult, they say. Is that because even for Rc Helicopters I say no! For since there is the coaxial helicopter, the start is really easy! I speak from experience, because I've done it and that's saying something

Coaxial Helicopter - For the first flight tests optimally
So easy, the normal small coax heli to fly are also, they have one major drawback: they are extremely sensitive to wind and can be flown only in absolute calm outside of enclosed spaces. Even the slightest breeze, they are aborted and are no longer against the wind. But this is quite sad, because very quickly want to complete the entry after the first successful hovering flights and one flight from the home garden.

For newcomers: The robbe Blue Arrow XL
Exactly what the makers have probably discovered in the home robbe and remedies created: the "Blue Arrow XL" is one coax, but who has already an adult size and can be flown in light winds. Mind in light winds! The "Blue Arrow XL" robbe would be my recommendation for the absolute beginner who wants to breathe without assistance in the RC-Helifliegen in, but is not sure whether he stays with the hobby.

We must be aware that is probably that the coaxial helicopter, no matter how big or small they are, the more quickly impede learning progress, just because they are so stable in the air. Because soon we want to hover as a helicopter pilot more than one: we want to fly around, doing aerial work, gymnastics and a little faster and maybe even fly in aerobatic or 3D flying aboard at all. All this makes a coax heli but no longer, our faithful companion will then get bored.

For beginners with little more experience
If we remain so in the matter quickly, according to the desire for more. More means that we need to define a helicopter at full pitch and tail rotor control. The choice is difficult, because the offer is almost unmanageable. A rule of thumb: do not buy too small! There are tiny with less than 50cm diameter rotor, but they are usually very difficult to control, and again as the wind-sensitive coaxial helicopters.

From about 70cm diameter rotor to the real fun begins. The larger the rotor diameter and thus the whole helicopter, the better it will fly. However, we should also keep in mind the cost: the larger the heavier, more batteries, we need the more expensive it becomes.

If I write battery occurs to me that I forgot to mention that this year actually only electric helicopters are contemporary. Only in the most severe extremes in terms of aerobatics or gigantic rotor diameter of 1.60 m across are for glow - yet - widely used. Otherwise colleague has conquered the electric field!

Just fine, I think the helicopters of the 450cc class with a rotor diameter of about 70cm! They are already big enough to fly well, to be transported but also small enough to reasonably priced and well and have a quite substantial depending on the pattern aerobatic potential! In any case, certainly more than I will ever bring about. My favorites are the "T-Rex 450" Align in the sale of the robbe or "Beam E4" from the USA. If there must be something bigger then like the "Logo 400" Mikado. But he has had a rotor diameter of 100cm and every inch is more expensive, unfortunately, more money.

What I like about the somewhat larger non-coaxial helicopters particularly well, beautiful to look at the possibility of hulls to the mechanics is to build around. Then not just any old broomstick flying through the air with a hood, but a "Hughes 500" or "Bell UH-1D" or otherwise a fine scale model. With the willing that is much more fun. Some time ago I'm on a flight day one, "BO 105" may admire as a rescue helicopter, which was of enormous size and had lots of special features. Because you could settle with a winch to the "emergency" or illuminate with searchlights, the "crash site". Since the child laughs in man!

Spare Parts for RC Helicopter
What appears to me very important is the question of spare parts. How does it look with care in two, three or four years? If I'm looking for a no-name product, decide what seems favorable at first glance, my fine and helicopters will need them later just in case new items, I get that later as well? This is a great argument for established brands and not the only reason I would choose me now for the T-Rex 450th

Trainer cord helps in the beginning
What is true for all non-coaxial helicopter, the principle is not to try it alone! An experienced helicopter pilot you should set the new helicopters, and best accompanied by teacher-pupil cable, the first hop. Otherwise you would be so overwhelmed that is, without knowledge of a new flight, not yet perfectly adjusted helicopter to lift into the air! One always has to be given: either you can fly or the aircraft is eingetrimmt!

Flight Simulators
Oh, and a good RC simulator for the PC has already prevented many a costly break! This is a good investment, even if a good simulator costs as much as a small helicopter. Even Ruediger, who is an accomplished helicopter pilot exercise under the sun, still busy with it. Anyway - so I confirmed also an experienced helicopter pilots - is the ongoing training, the perpetual exercise of the keys to success!

Conclusion and my tip:
1st Start with a simulator
2.Go if you want to fly via helicopter to a great little coax
3rd and then - or immediately after a 450 helicopter simulator.