/**
 * @author @thkruz Theodore Kruczek
 * @license AGPL-3.0-or-later
 * @copyright (c) 2025 Kruczek Labs LLC
 *
 * Orbital Object ToolKit is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Affero General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * Orbital Object ToolKit is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License along with
 * Orbital Object ToolKit. If not, see <http://www.gnu.org/licenses/>.
 */
import { J2000, Vector3D } from '../main.js';
import { Force } from './Force.js';
/**
 * Harris-Priester atmospheric drag force model.
 * Atmospheric density model assumes mean solar flux.
 */
export declare class AtmosphericDrag implements Force {
    mass: number;
    area: number;
    dragCoeff: number;
    cosine: number;
    constructor(mass: number, area: number, dragCoeff: number, cosine: number);
    private static _getHPDensity;
    acceleration(state: J2000): Vector3D;
}