Re: New B21 Images

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Message posted by NotTelling (Member since 07/02/2023) on September 13, 2023 at 15:38:05 PST:

I don't see 45 degrees but it is certainly angled down quite a bit.

Basic aero 101...In flight test the pitot boom is typically extended far enough ahead of the aircraft to be out of the lift-induced (local) flow field. Problem is in the case of a subsonic high aspect ratio wing the flow field is affected so far ahead of the aircraft that it's impractical to make a pitot boom that long. I suspect they modeled the flow field to align the shorter boom with the local airflow. Problem is the local airflow relative to the body axis changes based on airspeed and angle of attack, so they probably either (1) found an average or (2) found the most critical condition [either high altitude cruise or approach-to-landing] and aligned the pitot boom thusly.

In Reply to: Re: New B21 Images posted by Smythers on September 13, 2023 at 7:24:18 PST:


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