Removable low-density sealant
DE602022021883T2Active Publication Date: 2025-09-24RTX CORP
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Patent Information
- Application Number
- DE602022021883
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-10-25
- Filing Date
- 2022-10-25
- Publication Date
- 2025-09-24
- Estimated Expiration
- 2042-10-25
AI Technical Summary
Technical Problem
Low density abradable seals in gas turbine engines deflect during operation due to engine backpressure, leading to increased contact with the rotor and potential overheating.
Method used
An abradable seal comprising a stator substrate with a casing and radial walls, coupled with a low density abradable material containing embedded hollow microspheres, providing a high elastic modulus ratio to resist deflection and featuring a thermoplastic casing for stiffness, along with optional channels to prevent heat buildup.
Benefits of technology
The seal effectively resists deflection and reduces heat generation during rub events, enhancing engine efficiency and preventing additional contact with the rotor.
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