Fischer Hoverwing HW2VT

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Fischer Hoverwing HW2VT
Hoverwing HW2VT
Type: Ground effect vehicle
Design country:

Germany Federal RepublicFederal Republic of Germany BR Germany

Manufacturer:

Fischer flight mechanics

First flight:

1998

Commissioning:

1998

Number of pieces:

1

The Fischer Hoverwing HW2VT was a test vehicle of the Fischer flight mechanics for the use of the air cushion technology of ground effect vehicles during take-off and landing. The first test flights took place from 1998 on the Markenermeer in Holland.

history

From the mid-1990s onwards, Fischer Flugmechanik began designing larger ground-effect vehicles. The eight-seater Fischer Airfish AF-8 already showed that a lot of energy is required to guide the boat into the ground effect area. For the design of larger ground-effect vehicles, it was therefore desirable to use other methods for the take-off and landing phase, in which the ground-effect vehicle is a pure watercraft. Hanno Fischer used the well-known hovercraft technology, in which an air cushion is built under the vehicle. For this purpose, Fischer developed a catamaran boat in which the opening between the two hulls can be closed with retractable covers. With the covers closed, some of the propeller flow could be used to create an air cushion between the hulls. In this way, the ground effect vehicle could float over the water when docking and casting off without using the ground effect, which also made it more maneuverable. Otherwise, the design of the new ground effect vehicle had the same design features as the previous Airfish boats with their inverted delta wing . Fischer introduced the term hoverwing for these new ground-effect vehicles.

For testing purposes , Fischer commissioned Airfoil Development in 1997 to build a two-seater test vehicle called the Fischer Hoverwing HW2VT . The construction of the test vehicle was funded by the Federal Ministry of Education and Research (BMFT) as part of the research project "Technical Development of Ground Effect Vehicles (TEBEF)". The Institute for Inland Shipbuilding in Duisburg participated in the development as a scientific organization . In addition to the construction of the HW2VT, the construction of a second Hydrowing VT01 ground effect vehicle from Techno Trans in Rostock was financed as part of the project . Hydrowing and hoverwing technology should be compared with each other as part of their testing.

construction

Hanno Fischer actually intended to meet the requirements of the Flightship Ground Effect Pty. With the new hoverwing technology . for an eight-seat taxi boat. The original design therefore envisaged a larger eight-seater boat. For the test vehicle, this design was scaled down on a scale of 1: 3 to a two-seater design.

The two-seater Hoverwing HW2VT was a ground-effect vehicle based on the Lippian design with an inverted, bent delta wing and double T-tail unit. The hull was designed as a catamaran hull, with retractable aprons mounted on the bow and stern, which could be closed under the hull to build up the air cushion. To build up the air cushion, part of the propeller flow was directed under the hull, which reduced the boat's water displacement by 80%. As soon as the boat had established the ground effect, the front and rear aprons were retracted and the boat was completely put into ground effect mode.

testing

The Research Institute for Inland Shipbuilding in Duisburg was responsible for building the HW2VT test vehicle . The first flight of the HW2VT took place on May 7, 1997 on the Baldeney Lake in Essen. The basic testing of the hoverwing technology took place in 1998 by Airfoil Development on the Markenermeer in Holland. The deep sea test took place in 1999 on the Baltic Sea. A total of 3000 kilometers were covered with the HW2VT in the four-year test phase. When testing was completed in March 2001, the hoverwing technology was ready for series production and became the standard in future drafts of Fischer flight mechanics.

The TEBEF project of the Federal Minister for Research and Technology will be discontinued after the trial has been completed. A follow-up project to build a larger 20-seater hover wing is no longer possible. Since the flightship requirement could already be met with the older Airfish technology, it took until 2008 to tackle the first draft of a larger ground effect vehicle with the Fischer Hoverwing HW20 .

Whereabouts

The Hoverwing HW2VT test vehicle was later handed over to PT AGEC Techno in Jakarta as a training boat. The comparison boat Hydrowing VT01 is in the Technical State Museum in Wismar .

Technical specifications

Parameter Data
crew 2
Passengers -
length 11.50 m
span 11.00 m
height 2.80 m
Wing area m²
Wing extension
payload
Empty mass 1100 kg
Max. Takeoff mass
Cruising speed
Top speed 140 km / h
Service ceiling
Range
Engines 100 hp (74 kW)

Similar developments

See also

literature

  • Paul Zöller: Rhein-Flugzeugbau GmbH and Fischer Flugmechanik , 2016, ISBN 978-3-7431-1823-2
  • Andreas Gronarz: Technical development of ground-effect vehicles , report 1557 of the Research Institute for Inland Shipbuilding , Duisburg, May 2000

Web links

Individual evidence

  1. ↑ Airfoil Development: Hoverwing HW20. 2011, accessed June 9, 2017 .
  2. ↑ TEBEF final report of VBD. Retrieved May 24, 2017 .
  3. ↑ TEBEF final report of VBD. Retrieved May 24, 2017 .
  4. ↑ WIG craft data sheets - Hoverwing WIG craft technology. Retrieved May 24, 2017 .