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Old 05-02-2020, 02:25 PM
RV8JD RV8JD is offline
Join Date: Jan 2005
Posts: 303

Since you referenced the Van's article on HP limits, Vne, and TAS, I assume you are concerned about Vne as a function of altitude.

Vne (Redline) for the RV-9/9A is 210 MPH TAS/182.5 KTAS (although you wouldn't know it from official Van's literature). The table on the left in the chart below shows Vne in terms of IAS at different altitudes for a Vne of 210 MPH TAS/182.5 KTAS.

Vno (Maximum Structural Cruising Speed) is 180 MPH IAS for the RV-9/9A. Note that at 10,000 ft, Vno is about equal to Vne. Above 10,000 ft, Vne is lower than Vno and governs.

Hope that helps,
Carl N.

Last edited by RV8JD : 05-02-2020 at 02:34 PM.