ERA investment in W7 successful in mitigating test risks. Provides unique and versatile facility for SOA multistage compressors and experienced personnel to execute future test campaigns. 1. Phase 1 Lessons Learned Implemented as Phase 2 Risk Mitigation: (1) Speed control worked well; (2) Cross-talk eliminated between inlet and exhaust; (3) Oil leaks eliminated from Phase 1 testing.
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