METHOD TO DETERMINE CURVILINEAR PROFILE OF DISC BLADES Russian patent published in 2014 - IPC F01C1/12 

FIELD: engines and pumps.

SUBSTANCE: invention relates to the field of propulsion engineering and relates to the method for determination of curvilinear profile of disc blades in a multi-rotor internal combustion engine according to the patent RU 2325542 C2 and makes it possible to simplify manufacturing technology. Disc blades with a ledge and a groove comprising an appropriate profile in the form of identical curved lines coupled to each other, differing by the fact that each curve of the blades line is described by equations X_M1 = R·cos(φ+ α_i)-r·sin(β+2α_i); Y_M1 = R·sin (φ+ α_i)-r·cos (β+2α_i), where R - centre-to-centre distances between discs 1 and 2; φ - summary angle of the angle of centres of the ledge or the groove δ and the angle forming a curved line, φ₁ or φ₂, $$\text{cos}{\phi }_{\text{1}}=\text{cos}{\phi }_{\text{2}}=\frac{R}{2r};$$ α₁ - angle; r - disc radius; β - rated angle according to the formula β=φ₁+φ₂+(90°±δ).

EFFECT: method makes it possible to treat disc blades both with ledges and grooves by means of slotting, milling and polishing, thus making it possible to significantly simplify the manufacturing technology.

3 dwg