Aerial Refueling Positioning System Using Optical Signal Detection

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Solution Overview

Problem

Existing aerial refueling systems face challenges in accuracy and reliability, particularly due to dependence on wireless data connections between tanker and refueled aircraft, which can lead to errors and time lags, and are not compatible with all types of aircraft.

Innovation Solution

A positioning system that uses one-way signal transmission from the drogue or boom nozzle to the aircraft, employing optical or acoustic signals detected by a receiver to automatically maneuver the aircraft into position for refueling, minimizing errors and ensuring compatibility with any aircraft type.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If wireless data connection is used for two-way communication between tanker plane and aircraft to be refueled, then automation control is improved, but reliability deteriorates due to time lag and errors in the data link

Engineering Contradiction:
Improveautomation controlVSAvoidreliability
Core Design Contradiction:
Extent of automationVSReliability

Solution Approach 1:

The patent introduces optical signals (light) as an intermediary medium for position information transmission between the drogue and the aircraft. This replaces the unreliable wireless data link for position feedback with a direct optical signaling system that provides real-time, lag-free position information to the aircraft pilot or control system.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Extent of automation

If two-way wireless data connection is implemented, then control automation is enhanced, but error likelihood increases due to time lag in the data link

Engineering Contradiction:
Improvecontrol automationVSAvoiderror likelihood
Core Design Contradiction:
Extent of automationVSLoss of information

Solution Approach 1:

Optical signals serve as an intermediary that transmits position information directly and immediately from the drogue to the aircraft, eliminating the time lag and information loss associated with two-way wireless data communication. The optical signals provide continuous, real-time position feedback without digital processing delays.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If existing aerial refueling system is used, then refueling of specific aircraft types is enabled, but adaptability deteriorates as not any unmanned aircraft can be refueled

Engineering Contradiction:
Improverefueling capabilityVSAvoidadaptability
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent implements a universal positioning system using optical signals that can be integrated with any aircraft type equipped with a receiver, regardless of whether it is manned or unmanned. The system provides a standardized interface for position information transmission that works across different aircraft platforms, making the refueling capability adaptable to diverse aircraft types.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system significantly improves the accuracy and reliability of aerial refueling by reducing time lag-related errors and enabling refueling of any aircraft type, as the control unit processes signals to guide the aircraft to a precise connection with the drogue or boom nozzle.

Implementation Method 1

optical signals from the drogue are detected by the receiver on the aircraft

Methodology Applied
Scientific EffectOptical signal detection: Photoelectric Effect

Implementation Method 2

acoustic signals from the drogue are detected by the receiver on the aircraft

Methodology Applied
Scientific EffectAcoustic signal detection: Sound

Data Source

PatentEP2045186B1Aerial refueling system
Publication Date: 2010.09.22 SAAB AB
  • EP2045186B1 patent drawingFigure 1
  • EP2045186B1 patent drawingFigure 2~4
  • EP2045186B1 patent drawingFigure 5

AI summary

The invention relates to a positioning system (1) for aerial refueling of an aircraft (8) provided with a first means (10; 34) for connection with a second means (4; 36) arranged on a tanker plane (6), which first and second means (10; 34, 4; 36) are adapted to feed fuel from the tanker plane (6) to the aircraft (8). A receiver (14) on the aircraft (8) is arranged to receive signals from the second means (4; 36) and in that a control unit (16) on the aircraft (8) controls the aircraft (8) depending on the signals to steer the aircraft (8) to a position for connecting the first and second means (10; 34, 4; 36).