Patents by Inventor Fagim S. Gelmedov

Fagim S. Gelmedov has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Anti-stall tip treatment means
    Patent number: 5762470
    Abstract: To delay the onset of stall conditions at the tips of the blading an of axial-flow, mixed-flow and axial-centrifugal compressors, at the tips of the annular arrays of blading anti-stall tip treatment arrangement is provided at least at one of the arrays (2) comprising an annular cavity (3) communicating with the flow path through the compressor through slots (5) formed by an annular grid of ribs (4). The slots (5) provide communication between the cavity (3) and the flow path (7, 8) both upstream of and axially coincident with the array of blades (2). The ribs (4) are inclined relative to the radial direction at an angle (.phi..sub.r) of b 30.degree. to 50.degree.. The pitch (t) of the ribs and the slot width (.delta..sub.s) between the ribs are in the ratio of 1.5 to 2.0. The rib radial projection height (h) and the slot width are in the ratio of 1.1 to 1.8. The axial length (L) of the grating of ribs and the blade tip chord axial projection (b') of the array of blades (2) are in the ratio of 0.5 to 1.5.
    Type: Grant
    Filed: May 2, 1996
    Date of Patent: June 9, 1998
    Assignee: Central Institute of Aviation Motors (CIAM)
    Inventors: Fagim S. Gelmedov, Evgenij A. Lokshtanov, Lev Echielevich-Meerovich Olstain, Michail A. Sidorkin
  • Apparatus for preventing entry of foreign objects into aircraft power plant
    Patent number: 4261168
    Abstract: An apparatus is designed for preventing entry of foreign objects into an aircraft power plant. The apparatus comprises a rotor kinematically associated with a drive. The rotor is disposed in a duct between an air intake and an engine, and has a center body with radial blades secured thereon. The blades are installed at an angle to the plane which is square with the longitudinal axis of the rotor. The apparatus has a foreign object collection chamber with an opening for entry of foreign objects, disposed in front of the blades in the direction of air flow.The blades are installed relative to one another with an angular pitch determined from the equation: ##EQU1## where .phi. is the angular pitch of blades;K.sub.1 is the dimensionless coefficient dependent on the shape of blades;K.sub.2 is the dimensionless coefficient dependent on the ratio of diameters of the duct and center body to the maximum possible air flow rate at the engine inlet;.sigma. is the ultimate strength of the material of blades;.gamma.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: April 14, 1981
    Inventors: Karen K. Grigorian, Mikhail G. Mirimsky, Igor B. Movchanovsky, Fagim S. Gelmedov, Samuil I. Ginzburg, Lev E. Olshtein, Viktor G. Ferapontov