The purpose of a cost-out project is to reduce cost of blades by improving current blade design from a structural perspective.

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The cost reduction is done by modifying blade lay-up and introducing Bladenas technologies. In order to do a valid cost estimation, several factors needs to be considered. These factors include from design to end-of-life of the turbine. 

Below is given a list of cost elements considered in a cost-out project:
• Cost-out of blades manufactured in existing moulds
• Reduction in working processes in the mould and prefabrication
• Addition of new technology for weight reduction
• Further reduced weight by optimised design, more slim panels
• Blade obtains same stiffness and frequencies, no changes needed in control system etc.
• Improve quality of blade with reduced resources

Commercial benefits using Bladena technologies

Using Bladena Technologies stronger blades are achieved. Following financial benefits:
Cost-out in manufacturing
  1. Reduce bill of material for blades (less material).
  2. Reduced mould time.
  3. More accurate weight, since lower tolerances in use of resin.
  4. Reduce manufacturing time (e.g. avoiding over-lamination in confined spaces, les material lay up).
  5. Reduce risk for production flaws (reduced cap thickness less risk of wrinkles, bond lines protected structurally etc.).
  6. Less need for Non-Destructive Testing (NDT).
  7. Increase manufacturing tolerances can be allowed as peeling stresses are removed.
Others
  1. Reduced weight which reduce the root bending moment. Turbine optimization.
  2. Increase the AEP.
  3. Reduced maintenance cost and risk.
  4. Reduced risk for crack during test in certification and operation.
No.
​​
D-String​®
D-Stiffener​™
X-Stiffener​™
Cap Stiffener​™
Floor​™
1
Reduce bill of material for blades.
x
x
 
x
x
2
Reduced mould time.
x
x
x
x
  
3
More accurate weight, since lower tolerances in use of resin.
x
x
 
x
 
4
Reduce manufacturing time (over-lamination in confined spaces and at trailing edge)
x
x
x
x
x
5
Reduce risk for production flaws (Cap Stiffener™)
x
x
x
x
x
6
Less need for Non-Destructive Testing (NDT)
x
x
x
x
 
7
Increase manufacturing tolerances hence flaws does not affect the blade properties -> brings the manufacturing cost down.
x
x
x
x
x
8
Reduced weight which reduces the root bending moment.
x
x
 
x
 
9
Increase the AEP
(x)
(x)
x
(x)
x
10
Reduced maintenance cost and risk
x
x
x
x
x
11
Reduced risk during testing and operation
x
x
x
x
x