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6th Oct 2017, 11:18

#6 (permalink)

dixi188

Join Date: Apr 2004

Location: Dorset UK

Age: 70

Posts: 1,899

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Had them on the Electra. Used to reckon those steel blades were UDF.

Big props are still being developed, but I think the Mach limits are the biggest problem and also noise.

A400M for example- Mach .72

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