News

Deharde involved in Research Project

Objective: Reduction of fuel consumption i.e. of airplanes

Another Clean Sky success story - the BinCola Project („Evaluation of the Benefints of innovative Concepts of laminar nacelle and HTP“) has recently concluded. With Dassault Aviation as topic manager, Deharde, the European Transonic Windtunnel GmbH (ETW) and the Laserline GmbH collaboratively investigated the use of extended laminarity in the nacelles (engine housings) and HTP of a business jet in order to reduce drag and increase aerodynamic performance. The idea is to improve the efficiency of future aircraft by reducing fuel consumption and lowering CO2 and NOx emissions.

Laminar surfaces on airplanes can reduce drag. Surfaces of an airplane usually have turbulent flow but laminar flow only to a minor extend. In addition to the appropriate geometry, highest precision and immaculacy are required to realize laminar flow: At model experiments even a dust particle can change the flow and thus the result of the test.

It is important to pinpoint where the transition occurs between laminar and turbulent flow so the model parts were coated with TSP (temperature sensitive paint). Since the temperature of a surface is different at turbulent and laminar flow, the TSP can show where the surface heat flux is higher or lower. In this way it is possible to distinguish where the flow stays laminar or becomes turbulent, revealing the transition zone.

The following main tasks of the project were performed by the BinCola-Consortium:

  • Manufacturing of a high-precision model- and TSP-surfaces
  • Development and test of different methods to activate the TSP and thus realize visualization of flow
  • Performance of wind tunnel tests using TSP under cryogenic conditions (-163° C)

Dassault was very content with the scientific findings of the BinCola project. Many OEMs of the aerospace industry have already shown great interest in the results of the project. Thanks to the conclusions that can be drawn from the project, future aircraft components can be constructed in a skillful way so airplanes have a better flow and less fuel consumption.

See more at YouTube: Evaluation of the Benefits of innovative concepts of laminar Nacelle and HTP .

Sensible arrangements for handling of Corona

Deharde works

To minimize the risk of infection with the Corona virus, Deharde has increased hygienic and distance standards within the whole company already for weeks. Safety gloves as well as protective masks for high-risk personnel are given to staff members even for private use. If possible, employees work in home office. The success of preventive actions belongs to all of us: Thanks to everybody who shares precautionary measures and commitment!

 

Great documentary film about BelugaXL

National Geographic Channel captures insight views of the production of the mega airfrighter

Great documentary about the giant cargo plane BelugaXL: with “Megastructures: BelugaXL” the National Geographic Channel shows the successful story of an European project form the very vision to its maiden-flight. Deharde delivers the large 8x8 m super shells for the fuselage of the impressive airfreighter. See clip of the worth-seeing film: https://www.youtube.com/watch?v=niFa23tnwpE .

International Exchange

Two Latvian students made an internship at Deharde

Taking part in the European “Erasmus-Program”, two Latvien students of the Riga State Technical School, division “Metal”, came to Germany for a 4-week-stay. During this time, they made an internship at Deharde for 2 weeks. Our training manager and one of our apprentice guided the two guests closely which turned out to be an inspiring experience for all. During their stay, the Latviens enhanced their professional as well as their intercultural skills. The high motivation of the trainees and the clear dedication of the Deharde staff led to a winning situation for both sides. Final review: a successful, positive experience and a great time!

80% time savings at tests in wind tunnels in cryogenic or high speed facilities

AIAA Scitech Conference, Orlando

At the AIAA Scitech Conference in Orlando, Boeing presented the results of a project for the development of Remote Control Actuation (RCA) in cryogenic wind tunnels. The project is a cooperation by Boeing, NASA, Deharde and the ETW, a company that operates a cryogenic wind tunnel to investigate the aerodynamic characteristics of airplanes.

Currently, the configuration changes cause expensive interruptions during each test phase especially under cryogenic and high speed conditions. The project aims to eliminate these interruptions and highly increase the efficiency of the test campaigns. Extreme cost saving is the direct result of the use of RCA.

For the project, Deharde built a new wing of a 787 half model with several remote-controlled control surfaces (spoiler and aileron). The results of the project was a successful use of RCA technology: up to 80% test time reduction could be achieved for tests under cryogenic and cruise conditions.

On the long term, the new RCA based technology shall be made standard for wind tunnel testing. This vision clearly has become closer to reality now. Due to this, the participants not only will continue their research work, but will also start to introduce the advantages of RCA technology to the industry and create surroundings to bring RCA into service on a standard basis.

Singapore Airshow: Welcome to Deharde at booth K79!

Changi Exhibition Center, Singapore: Feb. 11. – 16, 2020

More than 1.000 participating companies from 50 countries, over 54.000 trade attendees from 147 world regions, exciting high-level conferences, enormous media exposure… the Singapore Airshow 2020 is one of the world-leading aerospace exhibitions. Good reason for the internationally operating Deharde GmbH to take part with its own booth at the German Pavilion. Next to our established services we will present our innovative, cost-saving process for sheet-metal bending: Deharde Polygon Forming®.

Come and visit us at booth K79! We are looking forward to seeing you and exchanging information, discovering striking news and doing fruitful networking!