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Method and symbology about the digital lights and pyrotechnic signals when the radio communication is lost

IP.com Disclosure Number: IPCOM000248014D
Publication Date: 2016-Oct-18
Document File: 6 page(s) / 392K

Publishing Venue

The IP.com Prior Art Database

Related People

Sivakumar Kanagarajan, Visvanathan Thanigai Nathan, Raghu Shamasundar: INVENTOR

Abstract

The probability of radio communication failure occurrence may be very low, however when it occurs the situation could be very demanding for the crew and the air traffic controller. Currently, on detection of radio communication failure, light and pyrotechnic signals from the air traffic controller are used for guiding the aircraft. The light and pyrotechnic signals may not be very efficient when the visibility is low. Further, the situation of radio communication loss may delay other flights as the current terminal handling capacity is very high. This leads increased workload for both the pilot and air traffic controller. Therefore there is a need to, efficiently detect the pyrotechnic signals, effectively convey the controller signals and their interpretations to the pilot to take timely and appropriate actions to quickly recover from the emergency. The proposed method provides digital pyrotechnic signals on an onboard display to reduce workload and improve the efficiency of communication in case of radio communication failure.

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  Method and symbology about the digital lights and pyrotechnic signals when the radio communication is lost

Sivakumar Kanagarajan, Visvanathan Thanigai Nathan, Raghu Shamasundar

ABSTRACT

The probability of radio communication failure occurrence may be very low, however when it occurs the situation could be very demanding for the crew and the air traffic controller. Currently, on detection of radio communication failure, light and pyrotechnic signals from the air traffic controller are used for guiding the aircraft. The light and pyrotechnic signals may not be very efficient when the visibility is low. Further, the situation of radio communication loss may delay other flights as the current terminal handling capacity is very high. This leads increased workload for both the pilot and air traffic controller. Therefore there is a need to, efficiently detect the pyrotechnic signals, effectively convey the controller signals and their interpretations to the pilot to take timely and appropriate actions to quickly recover from the emergency. The proposed method provides digital pyrotechnic signals on an onboard display to reduce workload and improve the efficiency of communication in case of radio communication failure.


1. INTRODUCTION

Radio communication between aircraft and ground crew is critical to overall safety of the aircraft during all phases of the flight. A radio communication failure can become a serious situation when it occurs. The communication failures can arise from a number of sources: equipment failure, radio interference, radio black holes, and language barrier. Several predefined processes are followed when loss of radio communication is detected. The pilot needs to set transponder code to 7600 immediately.

     At the Air Traffic Control (ATC), the controller may use light signals and pyrotechnic signals to communicate with the aircraft. A light gun emitting different colors (usually green, red and white) are used to establish communication with the aircraft. These colors may be flashed or kept steady and have different meaning to the aircraft


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on ground and the aircraft in flight. The pilots assess the situation on ground based on the instructions decoded from the light signals and pyrotechnics. For example, a continuous red light directed from the ATC to a flying aircraft indicates that the aircraft must continue circling and give way to other aircrafts or stay away. A steady green would imply that the pilot is cleared to either takeoff, land or cross the runway/taxiway as per his current situation. The pilot needs to observe the lights, decode the instruction associated with the light and pyrotechnics. The pilots can acknowledge the instruction by rocking their wings, moving the ailerons if on ground, or by flashing their landing or navigation lights during low light conditions or at night.

    These light signals and pyrotechnic signals demands the pilot's attention. The pilot's attention is diverted or glued t...