import { Degrees, FeetPerMinute, Knots } from "./common";
/**
 * This function calculates the turn radius of an airplane is nautical miles based
 * on its speed and the bank angle.
 *
 * @example
 * const angle = getVerticalFlightpathAngle(
 *     100, // speed in knots
 *     530  // bank angle
 * );
 * // angle = ~-3
 *
 * @param speed The speed given in knots
 * @param bankAngle The bank angle in degrees
 * @returns The flightpath angle in degrees
 */
export declare function getVerticalFlightpathAngle(speed: Knots, descentRate: FeetPerMinute): Degrees;