Pyotr Yakovlevich Ufimtsev (Russian: Пётр Я́ковлевич Уфи́мцев) (born 1931 in Altai Krai) is a Soviet/Russian physicist and mathematician, considered the seminal force behind modern stealth aircraft technology. In the 1960s he began developing equations for predicting the reflection of electromagnetic waves from simple two-dimensional shapes.
In the 1960s Ufimtsev began developing a high-frequency asymptotic theory for predicting the scattering of electromagnetic waves from two-dimensional and three-dimensional objects. Among such objects were the finite size bodies of revolution (disk, finite cylinder with flat bases, finite cone, finite paraboloid, spherical segment, finite thin wire). This theory is now well known as the Physical Theory of Diffraction (PTD).
A stealth engineer at Lockheed, Denys Overholser, had read the publication and realized that Ufimtsev had created the mathematical theory and tools to do finite analysis of radar reflection. This discovery inspired and had a big role in the design of the first true stealth aircraft, the Lockheed F-117. Northrop also used Ufimtsev’s work to program super computers to predict the radar reflection of the B-2 bomber.
* P. Ya. Ufimtsev, Theory of Edge Diffraction in Electromagnetics, Tech Science Press, Encino, California, 2003.
* P. Ya. Ufimtsev, Fundamentals of Physical Theory of Diffraction, Wiley & Sons, Inc., New Jersey, 2007.
* P. Ya. Ufimtsev, “Method of Edge Waves in the Physical Theory of Diffraction”, Soviet Radio, Moscow, 1962.
Some other references:
Dwayne A. Day. “Stealth Technology”. U.S. Centennial of Flight Commission.
Larry Musa. “Physicist of the Week: Pyotr Ufimtsev”.
Patrick Kiger. “The F117A — A Secret History”. Discovery Channel.
Ufimtsev, Pyotr Ya. / Fundamentals of the Physical Theory of Diffraction”.