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NEXT GENERATION STABILIZER-Concept/Feasibility for Commuter Aircraft

Goodwin, Daniel LU and Sandahl, Paulina LU (2013) MMK820 20131
Product Development
Abstract
The demand from the aircraft industry of light and stiff structures along with fast manufacturing processes has increased through the last decade. This master thesis is carried out at Saab Aeronautics with purpose of developing a new concept for the horizontal stabilizer to the turboprop aircraft SAAB 2000. To specify the project, only the torsion box, including spars, ribs and skins are considered. Directives are to strive for a low weight, low cost, easy manufacturing process and an easy construction to repair.
The materials used are carbon fiber reinforced epoxy, aluminum and the new alloy aluminum-lithium. During the concept generation, ten concepts in carbon fiber, three concepts in aluminum and three concepts in aluminum lithium... (More)
The demand from the aircraft industry of light and stiff structures along with fast manufacturing processes has increased through the last decade. This master thesis is carried out at Saab Aeronautics with purpose of developing a new concept for the horizontal stabilizer to the turboprop aircraft SAAB 2000. To specify the project, only the torsion box, including spars, ribs and skins are considered. Directives are to strive for a low weight, low cost, easy manufacturing process and an easy construction to repair.
The materials used are carbon fiber reinforced epoxy, aluminum and the new alloy aluminum-lithium. During the concept generation, ten concepts in carbon fiber, three concepts in aluminum and three concepts in aluminum lithium were developed. To make an objective comparison with the current design, a model for this was set up as well. The results from the reference model were used for setting up target values for the new concepts.
Based on analyses results, representatives from Saab chose two concepts for further development, DC.2-R4 and DC.4. DC.2-R4 consists of two spars, four ribs and a skin with integrated stringers. DC.4-R4 is designed with four spars, four ribs and simple skins. The concepts were thereafter dimensioned against buckling and allowable strains per lamina. A laminate layup was also specified to customize the material properties for the inner forces in the structure.
The final result from this master thesis shows that the new designs are approximately 30 % lighter and have 40 % less deflection than for the current design. The total cost in manufacturing is estimated to be around the same as for the current design. (Less)
Please use this url to cite or link to this publication:
author
Goodwin, Daniel LU and Sandahl, Paulina LU
supervisor
organization
course
MMK820 20131
year
type
H2 - Master's Degree (Two Years)
subject
keywords
Horizontal stabilizer, Saab, Aeronautics, Design, Product Development, Composite, Structure, Aircraft, Carbon fiber, CFRP
language
English
id
3915329
date added to LUP
2013-07-02 08:27:01
date last changed
2013-07-02 08:27:01
@misc{3915329,
  abstract     = {The demand from the aircraft industry of light and stiff structures along with fast manufacturing processes has increased through the last decade. This master thesis is carried out at Saab Aeronautics with purpose of developing a new concept for the horizontal stabilizer to the turboprop aircraft SAAB 2000. To specify the project, only the torsion box, including spars, ribs and skins are considered. Directives are to strive for a low weight, low cost, easy manufacturing process and an easy construction to repair. 
The materials used are carbon fiber reinforced epoxy, aluminum and the new alloy aluminum-lithium. During the concept generation, ten concepts in carbon fiber, three concepts in aluminum and three concepts in aluminum lithium were developed. To make an objective comparison with the current design, a model for this was set up as well. The results from the reference model were used for setting up target values for the new concepts.
Based on analyses results, representatives from Saab chose two concepts for further development, DC.2-R4 and DC.4. DC.2-R4 consists of two spars, four ribs and a skin with integrated stringers. DC.4-R4 is designed with four spars, four ribs and simple skins. The concepts were thereafter dimensioned against buckling and allowable strains per lamina. A laminate layup was also specified to customize the material properties for the inner forces in the structure.
The final result from this master thesis shows that the new designs are approximately 30 % lighter and have 40 % less deflection than for the current design. The total cost in manufacturing is estimated to be around the same as for the current design.},
  author       = {Goodwin, Daniel and Sandahl, Paulina},
  keyword      = {Horizontal stabilizer,Saab,Aeronautics,Design,Product Development,Composite,Structure,Aircraft,Carbon fiber,CFRP},
  language     = {eng},
  note         = {Student Paper},
  title        = {NEXT GENERATION STABILIZER-Concept/Feasibility for Commuter Aircraft},
  year         = {2013},
}