Bringing aero smoothness
Aerodynamic seals are aeronautics components used to improve the aircraft aerodynamic smoothness, reducing the physic vector know as drag and, consequently, became the aircraft more efficient with a reduced fuel consumption. In addiction the aerodynamic seals contributes to:
Reduce external noise;
Reach more speed;
Increase the aircraft residual value;
A superior climb and cruise characteristics;
Improved stall characteristics.
In the diagram below is shown an airplane wing cross section in two distinct conditions: with and without aerodynamic sealing.
Conception & CFD Analysis
Mathematical smooth surface;
No gaps, no steps.
During the development, gaps and steps are inevitable.
Aerodynamic seals bring the real surface closer to the ideal shape.
When you choose an Enflexus seals solution, you choose sustainability and economics benefits. This is one of the reasons of our success: our customers are able to confirm or measure benefits in a very expressive way. The world aviation community has recognized that the sealing solutions contributes considerably not only to the aircraft fuel burn reduction, but reduce the aircraft external noise and emissions as well. This is definitely that’s matter: engineering solutions that can protects the environment and guarantee a sustainable path to the future.
Fuel burn and emission reduction
Direct emissions from aviation account for more than 2% of global emissions. If global aviation was a country, it would rank in the top 10 emitters. By 2020, global international aviation emissions are projected to be around 70% higher than in 2005 and the International Civil Aviation Organization (ICAO) forecasts that by 2050 they could grow by a further 300-700%.
Source: European Comission - energy, climate change, enviroment.
One of the most important drive to adopt the aerodynamic seals solutions is related to the aircraft drag coefficient reduction and consequently the fuel burn reduction. In the world aviation community there are to many case studies that show the benefits around to 5% of fuel consumption reduction, when we compare a aircraft with and without aerodynamic seals installed.
A Monte Carlo simulation brings us a good example of a simplified market value analysis, considering just 1% of fuel consumption reduction(1): almost 90% of analyzed scenarios, this 1% could worths more than USD 160.000,00(2) over the aircraft price. The rationale is that after 24 months(3) the airline can recovery its investment.
It is important to highlight that this simulation consider only 1% of fuel consumption reduction. For a aerodynamic gain equals 3%, the market value could reach USD 480.000,00.
1. Fuel consumption reduction for a typical regional airplane: two turbofan engines, around 200 pax capacity. Considering 1.1. The block fuel measurement (between engines start to shutdown, including airplane taxi and ICAO fuel reserve rules); 1.2. Typical mission length of 600nmi.
2. Oil price considered: USD 75/barrel.
3. Airline payback accepted terms.
The amount of CO2 emitted from kerosene-burning aircraft engines depends solely on the amount of fuel consumed. If alternative fuels are considered, the specific CO2 emission per kg fuel changes, but fundamental rules of aircraft fuel consumption still apply.
The figure beside is the IATA Emissions reduce roadmap that shows the compromises assumed for all important players involved in the aeronautical business. The goal is reduce CO2 emissions by 50% until 2050.
Aircraft noise is the most significant cause of adverse community reaction related to the operation and expansion of airports. This is expected to remain the case in most regions of the world for the foreseeable future.
There's no getting away from the fact that aviation can be noisy. When aircraft land and take off - and, depending on the aircraft and its altitude, as they fly overhead - they produce a considerable amount of noise.
When the airport neighborhood community is evaluated, noise always is one of the most important adverse aspects of the community environment.
The aeronautical seals brings better results in external noise when installed in strategic location on the airplane.
External noise measurement
The actions for the search of aircraft with lower burn emissions and noise have expanded worldwide, being the base of world politics of many companies.
One of the best-known eco friendly policies in the aviation industry is the policy of the airline Flybe. The company has created an ecolabel with noise and emissions ratings.
Flybe Aircraft Ecolabel
Flybe, which is Europe’s largest regional airline, and which has invested over $2 billion in new, environmentally sensitive aircraft over the last two years, has become the first airline in the world to introduce an aircraft eco-labelling scheme. The scheme is in response to the Stern Report’s call for ‘labelling’ to help consumers and businesses make sound decisions. Under the scheme, which was subject to an assurance process by international consultancy firm Deloitte, Flybe passengers will be provided at the time of booking via the internet with a detailed but user-friendly breakdown of the fuel consumption, carbon emissions and noise patterns of the aircraft type to be used on their journey.