Talk:Sears–Haack body

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OK there we have who was Wolfgang Haack, but who was Sears ? Hektor (talk) 14:15, 19 December 2007 (UTC)[reply]

Optimal at slower speeds?[edit]

Is there any reason a Sears-Haack body would not be optimal at much lower speeds, say 65mph? —Darxus (talk) 02:27, 13 June 2012 (UTC)[reply]

Drag is comprised of 4 components:

1) Profile/ pressure drag

2) Skin-friction drag

3) Lift induced drag

4) Wave drag

The first 3 types of drag are observed at any speeds, while wave drag is a result of shock-waves forming over a body, and thus can only occur when parts of the flow moving over the body exceed the speed of sound (usually around Mach 0.8+). Below Mach ~ 0.8, no shockwaves form and the wave drag is 0

The Sears-Haack body is only optimised to reduce wave drag, however, at 65 mph shocks do not form so this optimisation is not needed. Moreover, the techniques used to optimise a body to reduce wave drag often conflict with techniques used to reduce the other 3 types of drag at subsonic speeds. For example, at subsonic speeds a blunt (rounded) nose cone is needed because sharp edges cause abrupt changes in flow direction (in subsonic flow), whereas the Sears-Haack body has a sharp nose cone to reduce area changes. DanSykes (talk) 15:07, 20 December 2022 (UTC)[reply]

Yes, I would also like to know this. Sears-Haack is designed for supersonic airflow, air behaves very differently at these speeds. Some information about Sears-Haack at lower speeds may be beneficial to the article? JackStonePGD (talk) 11:58, 19 August 2014 (UTC)[reply]

External links modified (January 2018)[edit]

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independent development?[edit]

Without any reference it's written, that Sears came up with the idea independently. Really and how so? 6 years later, after Haack had published it (as in publicly available), surely does not point to an independent development. Even if, why name the body after Sears at all? He was still second, no matter if independent or not. And even if you think he deserves credit for this at all, why on earth is his name in front of Haak? It should just be the Haack body, or at least the Haack-Sears body. 77.180.64.236 (talk) 06:08, 4 February 2023 (UTC)[reply]