Sub-Project 3 for Booster
SP3 evaluates the slow and high-speed booster (low-pressure compressors) concepts applicable to the different configurations.
Objectives
• SP3 will investigate and test highly loaded Booster technology adapted for the 3 different engine configurations presented in VITAL, i.e. the Direct Drive TurboFan (DDTF), the Contra Rotative TurboFan (CRTF)and Geared TurboFan (GTF)
• SP3 will design and test a composite rotor to reduce Booster weight
• SP3 will develop a numerical tool to predict erosion
Challenge
Approach
• A low speed highly loaded scaled down stage will be designed and tested. Casing treatment and secondary flow models will be validated
• A Booster composite rotor will be designed to reach the weight reduction target. An erosion model will be developed
• A low speed DDTF/CRTF highly loaded full scale Booster will be designed and tested, implementing casing treatments
• A high speed GTF scaled down Booster will be designed and tested
Expected results
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- Sub-Project 1 for whole engine assessment
- SP1 oversees the technical unity of the other sub-projects, and is in charge of design for each of the three engine architectures.
- Sub-Project 2 for Fan modules
- SP2 tests new fan module concepts and measures their aero-acoustic performance (contra-fan or lightweight fan).
- Sub-Project 4 for Structures
- SP4 focuses on new lightweight structural material (Hot and cold structures form the engine " back bone"). They provide basic engine stiffness and transfer high mechanical loads to and from the engine interior. Therefore the structures contributes to 15 - 20% of the engine weight.
- Sub-Project 5 for Low pressure shaft
- SP5 tests new concepts for a low-pressure shaft (which has to handle higher torque loads because of the slower fan speed). (Source : Brochure)
- Sub-Project 6 for Low pressure turbine
- SP6 seeks to identify new, lighter and quieter turbine concepts.
- Sub-Project 7 for Installation
- SP7 evaluates the impact of installing a high-bypass-ratio engine under the wing.