METHOD AND APPARATUS TO REDUCE THRUST OSCILLATIONS IN A LAUNCH VEHICLE
First Claim
Patent Images
1. A launch vehicle comprising:
- a casing;
a solid propellant located within the casing;
a channel through the solid propellant;
a geometric feature in the channel; and
a suppression structure located around a centerline for the channel and located upstream in a flow path from the geometric feature.
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Abstract
A launch vehicle comprising a casing, a solid propellant, a channel, a geometric feature, and a suppression structure. The solid propellant is located within the casing. The channel is through the solid propellant, and the geometric feature is in the channel. The suppression structure is located around a centerline for the channel and located upstream in a flow path from the geometric feature.
15 Citations
20 Claims
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1. A launch vehicle comprising:
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a casing; a solid propellant located within the casing; a channel through the solid propellant; a geometric feature in the channel; and a suppression structure located around a centerline for the channel and located upstream in a flow path from the geometric feature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A launch vehicle comprising:
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a casing; a solid propellant having a first segment and a second segment located within the casing, wherein a gap is present between the first segment and the second segment; a channel through the solid propellant; a circle-shaped rod attached to the casing and located around a centerline for the channel and located in a position upstream from the gap in a flow path in the channel, wherein the circle-shaped rod has a cross-sectional diameter capable of generating perturbations at a frequency during a generation of thrust and a diameter capable of generating perturbations at a radial location in the flow path during the generation of thrust, and wherein the cross-sectional diameter, the diameter, and the position are selected to reduce oscillations in the launch vehicle during the generation of thrust using the solid propellant. - View Dependent Claims (16)
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17. A method for reducing oscillations in a launch vehicle, the method comprising:
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identifying a geometric feature in a channel through a solid propellant in a casing for the launch vehicle; and placing a suppression structure around a centerline for the channel and upstream in a flow path from the geometric feature. - View Dependent Claims (18, 19, 20)
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Specification