Park flyer

Slow Flyer (of English. Slow " slow" and flyers " flyer " ) or park flyers are electrically powered radio-controlled model aircraft ( flight model ) with low airspeed. The border is fluid, as slow-fly models are usually referred to, which can also be flown in a hall. Park Flyers are slightly larger.

Slow flyer

The English names is due to the low air speed ( from slow walking pace up to jogging speed ) of the flier here. Slow Flyer remote-controlled, have a wingspan of 60 cm to 100 cm with a mass of about 60 g to 500 g and are usually driven by an electric motor. You can in the hall as well as in parks, gardens, sports fields and flown even in the home.

Parkflyer

The park flyer also belongs to the group of RC models ( radio controlled = radio remote controlled). It must be easy set up, with the mass of a Park Flyers rarely exceeds 800 g. But it is often more stable built so that it is less sensitive to wind than a slow flyer. It will be used very light materials such as Depron, GRP, CFRP, Selitron, EPP, Elapor and lightweight balsa wood for the construction of park flyers.

Drive Technology

As a drive for slow-fly / park flyer almost exclusively electric motors are used, which of batteries (NiCd, NiMH or LiPo / 5-10 or 2-3, depending on the model ) are supplied, usually from a battery pack. Because small engines have a very high speed, and they are typically stocky with a gear up to 1:5. Lately, more and more, the brushless motors (English: brushless) by which manage an external rotor offer higher torque without gear and can rotate correspondingly large propellers directly. They have the advantage of higher efficiency, lower mass and are in contrast to the brush motor largely wear-free. However, for the operation of a more expensive motor controller three phase regulator required ( Drehstrommotor! ). The advantages can be exploited only correct if they are operated on LiPo-/LiIon-Akkus with its currently unbeatable power to weight ratio. Overall, we achieved hereby again a reduction of 20-50% of the take-off mass in mostly large power output, so that the models either fly even slower, longer, or both. Resourceful heads have expanded from defective CD-ROM/DVD drives motors and rebuilt by minor modifications to high-performance aircraft engines of 8-60 g mass (see Web Links ' PowerCroco ').

Flight conditions

Due to the small mass they are very sensitive to wind and can therefore only be flown in calm weather and with no wind. Ideally, one has a large hall ( gymnasium, exhibition hall, etc.) to the hall tickets are available. Due to the low airspeed (because of the low wing loading ), these fliers a good-natured flight behavior and are also easily mastered by a ungeübteren pilots. Beginners therefore often resort to these slowflyers to learn to fly by radio-controlled aircraft. Park flyers can also be flown in light winds. The maximum wind speed depends on the skill of the pilots and the model interpretation. With higher-powered models, it is also possible to fly in gusty wind. Nevertheless, there are also fully aerobatic machines with which all known maneuvers can be flown. There are regularly discharged Championships Indoor Aerobatics (eg: German Indoor Aerobatics Championship ).

Development

But there are also much larger Slow Flyer ( wingspan up to 3 m ), but are exceptional and fit more into the category of experimental devices. The trend is moving in the direction of ' still small ' and ' easier '. These aircraft have spans up partially below 20 cm and can have a mass of less than 10 g. Although you also fly very slowly and are therefore also to the kind of slow flyer to include, but are often referred to as Room flyer or Nano plan, since you can already fly even in a larger living room with them.