Aircraft landing assistance method and memory storage device including instructions for performing an aircraft landing assistance method

A method, comprising:

• determining that an aircraft is landing based on a distance of the aircraft to a zero speed indicator and whether the aircraft is configured for landing;
• in response to determining that an aircraft is landing:
• calculating where to locate a zero speed indicator on a display in the aircraft based on current flight characteristics by:
• calculating a first target acceleration vector according to an azimuth dependent solution;
• calculating a second target acceleration vector according to an azimuth independent solution;
• and
• selecting one of the first target acceleration vector, the second target acceleration vector, or a combination of both the first target acceleration vector and the second target acceleration vector based upon the current flight characteristics of the aircraft, and whether the azimuth dependent solution converges;
• and
• calculating a distance from a current location of the aircraft to a zero speed location, based on a location where the selected target acceleration vector is achieved;
• and
• displaying the zero speed indicator at the zero speed location, wherein the zero speed indicator further indicates a location where the aircraft is calculated to reach zero horizontal speed and zero altitude according to a reference glide path based on flight characteristics determined via navigational systems included in the aircraft.

A non-transitory memory storage device including instructions that when executed by a processor perform an operation comprising:

• determining current flight characteristics for an aircraft via navigational sensors included in the aircraft;
• calculating where to locate a zero speed indicator on a display in the aircraft based on the current flight characteristics by:
• calculating a first target acceleration vector according to an azimuth dependent solution;
• calculating a second target acceleration vector according to an azimuth independent solution;
• selecting one of the first target acceleration vector, the second target acceleration vector, or a combination of both the first target acceleration vector and the second target acceleration vector based upon the current flight characteristics of the aircraft, and whether the azimuth dependent solution converges;
• and
• calculating a distance from a current location of the aircraft to a zero speed location, based on a location where the selected target acceleration vector is achieved;
• and
• projecting the zero speed indicator on the display at the zero speed location.