If you like to be up in the clouds, the "Double Flyer" tethered balloon offers the perfect opportunity to just dangle your legs, free-floating at 75 meters (250 ft). Up to two persons can comfortably sit in the parachute seats and enjoy the beautiful view over a landscape or a city. The balloon is anchored tightly to the ground via a steel cable. A cable winch moves it up and down.
The DOUBLE FLYER is available in three sizes: 280 m³, 380 m³ and 510 m³ (10,000 to 18,000 cuft). All sizes can transport two passengers.
Standing on the ground, the height of the balloon is 14 m (45.93 ft). Its diameter is about 9 m (29.53 ft), its circumference about 27 m (88.58 ft).
No, only helium is certified and safe.
1 m ³ Helium lifts 10 N ̴ 1 kg.
The lifting capacity is about 270 kg.
The low leakage of our special new balloon material is such that the balloon requires an average refilling of less than 15 m³ (530 cuft) per month, over the whole lifetime of the balloon.
Depending on the site and the operating frequency, the lifetime is about 5 – 7 years.
It is possible to choose different colored fabric slices for each slice of the envelope. In addition to the printing/paintwork on the envelope, it is also possible to use flexible and removable banners to fulfill any specific operating requirements.
The site should be free of obstacles higher than 3 m (9.84 ft) within a diameter of 40 m (131.23 ft). A centered funnel of 90° opening towards the sky must be completely free of obstacles. Eight restraint points, evenly distributed around the balloon, with a radius of 20 m (65.62 ft), must be freely accessible. The winch further requires a 3×380 V power supply.
The maximum wind speed for operation is 6 m/s.
Due to the special anchorage system, the DOUBLE FLYER can remain inflated up to a wind speed of about 60 km/h (17 m/s).
The balloon normally remains inflated for the whole duration of the event.
Flying up to a max. altitude of 40 – 75 m, 4 – 8 flying cycles per hour are possible.
The ascent speed is 18m/min.
The descent speed is 18 m/min.
The balloon ascends to a maximum altitude of 75 m.
In good weather, the balloon can be seen from a distance of 10 km.
A maximum of 2 passengers, depending on the wind speed.
2 persons are necessary for operation. One of them operates the winch, the other secures the passengers in their seats. The members of staff require instruction by the manufacturer.
Compliance with the safety limits is continuously controlled by an alarm system throughout the ascent. The operator is informed by means of a flashing light if the limits are exceeded. During the flight, the passengers can contact the operator via a radio system.
The operating license is to be issued by the local aviation authority.
In Europe, the DOUBLE FLYER has a general license for commercial transport of passengers, issued by the European aviation agency EASA. The balloon is delivered with Certification of Airworthiness for registration in the respective countries. In some countries outside the EU, no certification is required.