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Launch and Recovery of Traditional VTOL UAVs by Quiescent Period Prediction (QPP), the development of QPP for All Weather Operations (AWOPS)

Robert Taylor, Royal Navy
John Kish, USN
M.R. Belmont, J.T. Christmas, University of Exeter

https://doi.org/10.4050/F-0079-2023-18187

Abstract:
For most of the traditional VTOL UASs, the precise measurement of these environmental data is essential for air vehicle safe launch and recovery events. Physics limits the speed by which the deck can be raised from rest to a dangerous position. It is helpful to identify the quieter, more quiescent periods in deck motion. However, the time needed to set-up and land UASs are often longer than these quiescent windows may persist, assuming a quiescent window can be identified in the first place. Without precise measurement of deck motion or sufficient advanced notice of the onset of quieter motions, cycle after cycle of ship's motions whilst the vehicle attempts stabilize for recovery. The aim of Quiescent Period Prediction (QPP) is to provide ship motion conditions and motion predictions with sufficient forecasted time (over a minute) to launch, recover and complete other motion sensitive tasks regardless of the seaway. The fundamental concept is to measure remote sea surface profiles to predict the future wave forces acting upon a vessel. QPP operates within a federated architecture system containing measurement instruments such as a Wave Radar system used to map remote sea surfaces several hundred meters in advance of the ship. This enables the computation of future wave forces acting on the vessel.This article describes the development of the QPP System concentrating on test procedures, timely seaway mapping and ship motion characteristics to complete specific motion sensitive task. The objective is to expand ship operating deck limits to approximately Sea State 6+.


Launch and Recovery of Traditional VTOL UAVs by Quiescent Period Prediction (QPP), the development of QPP for All Weather Operations (AWOPS)

  • Presented at Forum 79
  • 13 pages
  • SKU # : F-0079-2023-18187
  • Unmanned VTOL Aircraft and Rotorcraft

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Launch and Recovery of Traditional VTOL UAVs by Quiescent Period Prediction (QPP), the development of QPP for All Weather Operations (AWOPS)

Authors / Details:
Robert Taylor, Royal Navy
John Kish, USN
M.R. Belmont, J.T. Christmas, University of Exeter