Augur Au-11

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The airship Au-11 , which is sold by the Russian company RosAeroSystems , a subsidiary of Augur Luftfahrtsysteme , is a single-seat impact airship type .

The first pictures of flight tests are from June 2004.

Shell

The shell has an aspect ratio of 4 with a length of about 27.5 m and a largest diameter of 6.88 m. Its theoretical volume is 669 cubic meters. It consists of polyurethane-coated polyamide (nylon) and is designed for a service life of around 14,000 flight hours.

The overpressure inside, as well as the volume compensation of the helium carrier gas, is generated by two egg-shaped ballonets . It is around 3.5–6 mbar. Their arrangement in the bow and stern of the hull also allow trimming . Each ballonet has a volume of 61.5 cubic meters and there is a PAK 3 safety valve in each, which enables the airship to climb rates of up to 7 m / s without the internal pressure rising above the permissible limit values.

Approximately in the middle on the left side of the cover there is an emergency pressure relief valve PAK 1 for the helium filling. It either triggers automatically, but can also be operated manually. The valves are connected to the casing via short pieces of tubing so that they can be serviced or replaced without any loss of gas. The envelope is filled and emptied via two further pieces of hose, at the rear of the envelope and behind the gondola.

The bow reinforcement consists of eight stiffening ribs that run in a star shape towards the bow cone. It stiffens the front part of the shell and provides a mooring point for anchor masts . The lower part of the cover is also reinforced. There forces from the nacelle and the drive are introduced into the buoyancy body. The gondola is also suspended inside the shell on 10 ropes that are attached to the top along suspension strips. Their arrangement allows a circular envelope cross-section.

A case of this type was handed over to the French Voliris project in June 2002 .

Gondola / drive

The gondola is fully clad. The VAZ 1111 engine with the two-bladed propeller is integrated in the rear part. The air flow behind the fully clad propeller can be deflected vertically downwards and up to 9 ° against the direction of travel with the help of blind-like deflection surfaces. This also enables vertical takeoffs with dynamic lift. The reverse thrust, which works similar to the thrust reverser in jet engines , makes maneuvering easier during take-off and landing.

Inside the nacelle are the flight instruments, the flight control, valve control, an accumulator, the fuel tank and a container for ballast. It has large windows. The windshield has a wiper. Entry and exit are via a large door on the left-hand side, which is designed as a wing door with a gas pressure damper.

The tail unit consists of two horizontally and vertically arranged surfaces and has an undercut so that it does not touch the ground at take-off and landing angles of up to 7 °. Each tail surface consists of a fixed part and a movable rudder surface. It consists of a tubular frame and is covered. The lower rudder is controlled with cables, while the upper rudder is moved with an electric drive, a kind of simple fly-by-wire control.

In order to improve the control around the vertical axis at low speeds, some models have a kind of transverse thruster similar to the rear transverse propeller on the Zeppelin NT in the lower tail fin . It is powered by a 2500 W electric motor. The airship's electrical system provides the necessary energy.

landing gear

A self-aligning telescopic leg with the landing wheel is located on the nacelle. It absorbs impacts on landing and allows the ship to move on the ground. The ship can also be equipped with floats.

Furnishing

  • Radio, navigation and flight instruments

Special equipment:

  • Photo and video equipment with radio transmitters e.g. B. for TV broadcasts
  • speaker
  • Banner on the sleeve for aerial advertising

business

Accommodation is in an airship hangar or on an anchor mast . It can also be firmly anchored to the ground for repairs or refueling, so that it cannot turn into the wind. This is possible up to lateral wind speeds of around 8 m / s. Flight operations can be carried out at wind speeds of up to 12 m / s, and a water landing in shallow seas up to 10 m / s.

The ground crew consists of 2-4 people. She guides the airship by hand to the launch site or to the anchor mast.

The airworthiness meets the requirements of the Intergovernmental Aviation Committee of the CIS states

The mission takes place in good weather under visual flight conditions.

Technical specifications

  • Total height: 9.4 m
  • Tail surface: 26.5 m²
  • Empty weight: 465 kg
  • Payload: 160 kg
  • Takeoff weight: 870 kg
  • min. Speed: 0 km / h
  • Cruising speed: 60 km / h
  • Top speed: 80 km / h
  • 360 ° rotation at standstill: 50 s
  • Engine type: VAZ-1111
  • Power: 21 KWt
  • Flight duration:
    • at cruising speed: 5 h
    • at top speed: 2.5 hours
  • Range: 300 km
  • Range with additional tank: 800 km
  • Max. Altitude: 2000 m
  • Operating altitude up to 1000 m
  • Crew: 1
  • Ground team: 2-4

Records

On February 10, 2005 the airship in Zhukovsky / Russia set an FAI speed record for gas airship of the BA-02 category (400 to 900 m³) with 50 km / h .

See also

Web links