Height Velocity Diagram

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Thanks so much for the explanation. Very clear!

Striker
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Hi, back in '95 when I took my first CPL(H) in US the school gave me an interesting document (unfortunately lost), not sure if edited by RHC (Robinson) analyzing the different shape of the H/V curve during an approach. Summarizing the document was saying that since a descending helicopter controls a "gradual dissipation" of the high potential energy granted by his height from the ground, the standard H/V curve drown for high pitch settings doesn't apply. In that flight condition H/V curve is shrunk and higher from the ground leaving more room available for a safe flight condition and allowing to fly a linear tilted path (glide slope) that doesn't cut into it, as long as the approach path is not too steep.
In all these years I searched for that or for a similar document with no results, did you ever run into this kind of information somewhere during your instructional career?

maxb