reported Pitot system measuring climb speed

[Nzaviator]

In a hover or flying even slightly backwards the pitot system will cause the Air speed indicator to show the climbing speed of the aircraft. Pitot works on forward ram air so in a hovering climb should read zero or near zero. sometimes will show 40+ knots (speed at which the aircraft is moving vertically) not forward.

[Lord Vader]

Hello @Nzaviator

Though I understand what you're saying, can you create a short track with this happening, especially when you mention reaching speeds like 40kts?

[G-Tech]

Tried this is in the UH-1H, no airspeed on vertical climb. CH-47F has air speed on the vertical? Got up to 60 knots. Track below.

Vertical climb air speed .trk

[Lord Vader]

Hi @G-Tech

Thanks for the track. It's acceptable to have some residual IAS in vertical flight but this sounds a bit much. I'll send it to internal analysis.