Talk:Pyotr Ufimtsev

Ufimtsev, stealth, and CGI

As I understand it, Ufimtsev's work treated complex curved shapes as a group of planes. As computing power increased, the size of the planes could be reduced. This is why early stealth aircraft were faceted but modern ones have smooth contours. Is this correct? It strikes me that computer-generated images experienced a similar evolution. In the early days, the facets on a wireframe model were big and few in number. However, modern CGI can model the highlighting and shadowing effects of very complex shapes. Is Ufimtsev's Physical Theory of Diffraction the foundation of modern CGI as well as stealth? If so, this article should make reference to it. —Preceding unsigned comment added by 165.91.64.158 (talk) 00:42, 27 August 2008 (UTC)

Professor Ufimtsev should be discussed in the Stealth technology page. His paper, published in 1964 in the Journal of the Moscow Institute for Radio Engineering, became the basis of the F-117 (a Lockheed analyst found and translated the article).

What is needed here is to obtain a reference for the English translation of the paper, or at least a reference to the Russian journal itself, itself, which is part of the open scientific literature.

Ufimtsev himself built upon work done by German physicists during WWII.

16:17, 3 March 2007 (UTC)raryel

Translated work reference added. Mightyname (talk) 13:47, 4 July 2012 (UTC)

clarifications

The F117 did not benefit very much from Ufimtsev's work. Lockheed had a concept called the "hopeless diamond" . An aircraft shaped like a diamond would reflect radar away from the transmitter but would not be able to fly. The F117 is an implementation of this concept which does not require Ufimtsev's analysis techniques nor computing power that became available for the B2 program. Because of the use of flat slabs on the F117, it is not stealthy from certain directions. The F117 is very unstable and at least 2 were lost in low altitude testing. With the use of Ufimtsev's models, Northrop was able to design complex shapes that were both good at sending radar reflectors away from the transmitter and aerodynamic.

A citation should be found for Ufimtsev's use of German work. He is very well aquinteted with all prior work in math and physics that could help him in his work. We once discussed Russian mathematicians, and I was amazed at his depth of knowledge about their lives as well as their work. Saltysailor (talk) 20:06, 24 April 2008 (UTC)

And you base that on... what? The Germans made little contributions to math... well, if you count Jewish contributions to German science as German, then sure, but the Germans persecuted Jewish scientists and denounced their work. Because of that, the German mathematical school was the weakest in Europe during the period of Nazi despotism. To this day, Germany has not fully recovered from what the brown menace did to it's own school of mathematics. Since the first time the TIMMS study was conducted, Russia outperformed Germany, always (being the first non-Asian country on the list) ...You were referring to some nazi stuff, weren't you? I did a simple Google search on German mathematics but came up empty (on the contrary, I was surprised by the wealth of information on Russian mathematics in the English-speaking internet). And besides, most of the Nazi scientists and their work (assuming there even was something of value, to the subject) was captured by other countries. 65.92.56.210 (talk) 04:03, 14 April 2009 (UTC)

The Hopeless Diamond was designed using software written at Lockheed after study of Ufimtsev's translated publications. This is described at some length in Ben Rich's book "Skunk Works" which is cited in the article. In Rich's description, Ufimtsev's work was considerably more influential than the current version of the wiki article makes it sound. 67.122.210.149 (talk) 00:36, 3 November 2008 (UTC)

Wrong

You can't build a "stealth plane" without the knowledge, how to calculate the reflection of waves. And this was his discovery. --Saiga 23:58, 3 March 2010 (UTC) So all stealth programs benefits a lot of his discovery. It is like you can't count but want to sell something... —Preceding unsigned comment added by Saiga12 (talk • contribs) 23:59, 3 March 2010 (UTC)

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Correct name?

Why is his name spelled "Petr" in the title, when it's actually "Pyotr" (as shown in the lede)?