Non-skid, radar absorbing system, its method of making, and method of use
AssigneeGeneral Dynamics Land Systems, Inc.
InventorsS. Jared Strait, Martin A. Lindell, Richard Norman Johnson
Life of this patent
Estimating the term…
Abstract
A non-skid, radar absorbing system 10. The system absorbs and scatters incident microwave and/or millimeter wave radiation so as to decrease retro reflectance. The system includes an absorbing layer (RAM) 14 juxtaposed with a substrate 12. Disposed adjacent the RAM 14 is a non-skid matrix layer 16 for providing a safe foot hold. Optionally, a protective environmental topcoat 18 is applied to the non-skid layer 16. The system has electrical and magnetic characteristics such that radar energy at a discrete or broadband frequencies is at least partially absorbed. The invention also includes methods of making and using the non-skid, radar absorbing system 10.
Claims20
A non-skid, radar absorbing system disposed adjacent a substrate, the system comprising:
- an absorbing layer having a thickness t1, a selected magnetic permeability μ1 and permittivity ε1 juxtaposed with the substrate;
- and
- a non-skid matrix layer having a thickness t2, a selected magnetic permeability μ2 and permittivity ε2 disposed adjacent the absorbing layer,
- the system having electrical and magnetic characteristics μ, ε that are tuned, and the thicknesses t1, and t2 are selected such that microwave and/or millimeter wavelength energy at discrete or broadband frequencies is at least partially absorbed.
A non-skid, radar absorbing system disposed adjacent a substrate, the system comprising:
- an absorbing layer having a thickness t1, a selected magnetic permeability μ1 and permittivity ε1 juxtaposed with the substrate;
- and
- a composite layer having a thickness tc, a selected magnetic permeability μc and permittivity εc disposed adjacent the absorbing layer, the composite layer comprising
- a non-skid matrix;
- and
- protective environmental coating pigments dispersed within the non-skid matrix,
- the system having electrical and magnetic characteristics μ, ε that are tuned, and the thicknesses t1 and tc are selected such that microwave energy and/or millimeter wavelength energy at discrete or broadband frequencies is at least partially absorbed.
A non-skid, radar absorbing system disposed adjacent a substrate, the system comprising:
- an absorbing non-skid composite layer having a thickness tc2, a selected magnetic permeability μc2 and permittivity εc2 disposed adjacent the substrate, the absorbing non-skid composite layer comprising
- an absorbing material having a selected magnetic permeability μ1 and permittivity ε1;
- and
- a non-skid material having a selected magnetic permeability μ2 and permittivity ε2 dispersed within the absorbing material;
- and
- a protective environmental coating having a thickness t3, a selected magnetic permeability μ3 and permittivity μ3 applied to the absorbing non-skid composite layer,
- the system having electrical and magnetic characteristics μ, ε that are tuned and the thicknesses tc2 and t3 are selected such that microwave and/or millimeter wavelength energy at discrete or broadband frequencies is at least partially absorbed.
A non-skid, radar absorbing system disposed adjacent a substrate, the system comprising:
- one or more absorbing layers, one of the one or more absorbing layers being juxtaposed with the substrate;
- one or more non-skid matrix layers, one of the one or more non-skid matrix layers being disposed adjacent one of the absorbing layers;
- and
- one or more protective environmental coatings applied to one of the one or more non-skid matrix layers, the system having electrical and magnetic characteristics that are tuned, and the thicknesses of the layers are selected such that microwave and/or millimeter wavelength energy at discreet or broadband frequencies is at least partially absorbed.
A method of making a non-skid, radar absorbing system comprising the steps of:
- preparing an absorbing layer including a dispersion of microballoons;
- spraying the absorbing layer and the dispersion of microballoons upon a substrate;
- applying a non-skid matrix layer to the absorbing layer and the dispersion of microballoons;
- and
- applying a protective environmental coating to the non-skid matrix layer.
Dependencies are inferred from the claim text.