Mechanical Actuators for Guidance of a Supersonic ... - CFD4Aircraft

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Effect of Separation Distance (between(pin and fin)• Dividing the force by the frontal area of the pinprovides a 1 st order collapse of the magnitude• Several different parameters were explored todetermine the effect of separation distance The distance from the edge of the fin to the centroid of the pinprovided the best collapse Optimum separation distance appears to be about 0.41-0.42 in• Plots are at Y = 0.775inGap (pin-fin)Dist to CentroidPin DiameterAuthorized for public release. Distribution Unlimited.06/21/2007 12
Effect of Pin Geometry• For same frontal area, rectangularpin gives most force Has least 3-D relieving effect Seems to outweigh additional sideforcegenerated on trapezoidal pin• Optimal (X,Y) location independent ofpin geometry• Enough trapezoid data acquired(before structural failure) todemonstrate that flat pin is betterSide Force (lb)2018161412M 2.475 C/D Nozzle DataY = 0.565 in.TrapezoidRectangleRound1080.35 0.4 0.45 0.5 0.55 0.6X (in)Authorized for public release. Distribution Unlimited.06/21/2007 13
Page 4 and 5: Guided bullets to intercept mortars
Page 6 and 7: Concept of implementing flow contro
Page 10 and 11: Parametric Study DetailsPin locatio
Page 14 and 15: Mach 2.5 Experiments at GTRI½ Proj
Page 16 and 17: Second Generation Actuator Rotates
Page 18 and 19: Using CFD to Predict Range Test Res
Page 20 and 21: ARL Range Test Setup• 6 Orthogona
Page 22 and 23: Shadowgraphs from Range - Count Rot
Page 24 and 25: What went wrong?• Compromises in
Page 26 and 27: 700 ft Range Preliminary Tests• O
Page 28 and 29: 700 ft Range Tests - Divert Demonst
Page 30 and 31: Divert Demonstrated by Shadowgraphs
Page 32: Conclusions• A demonstration of s

Mechanical Actuators for Guidance of a Supersonic ... - CFD4Aircraft

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