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Meeting	ACGS Committee Meeting 124 - Williamsburg, VA - October 2019
Agenda Location	9 SUBCOMMITTEE D – DYNAMICS, COMPUTATIONS, AND ANALYSIS 9.3 DIVE – Dynamic Interface for Virtual Environments
Title	DIVE – Dynamic Interface for Virtual Environments
Presenter	Zach Smith
Affiliation	NAVAIR
Available Downloads*	presentation
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Abstract	Abstract: In order to determine suitability for a VTOL aircraft aboard a ship, the US Navy spends significant time and money fully testing the pair. Currently, only physical aircraft going to physical ships is considered truth data when determining this suitability. Thus, this process is very expensive in terms of man-hours, in ship time, and financially. The Dynamic Interface Virtual Environment (DIVE) is a research effort aimed at decreasing these costs. DIVE is an ONR funded program being conducted at NAVAIR, Pax River. The program aims to utilize pilot in the loop simulation and desktop pilot models to reduce the required time spent on live testing trials. The effort is largely focused around increasing simulator and computation fluid dynamic capabilities to better represent reality. Further research focuses on better capturing pilot workload when performing shipboard operations. The program outcome is hopefully a fundamental change to how the US Navy certifies a ship-aircraft pair for fleet acceptance. Executive Summary: The goal of the Dynamic Interface Virtual Environment (DIVE) program is to develop an accredited process by which a Wind Over Deck (WOD) envelope can be generated based on simulation data. The wind and sea conditions within which rotorcraft are permitted to function for ship-based flight operations are defined by WOD launch and recovery flight envelopes. These envelopes are established during at-sea dynamic interface (DI) test events. The data collected during these tests are limited to the wind condition encountered at the time of test. Current processes of developing the WOD envelope from the DI data can be described as “you get what you test.” This results in flight clearances that may be unnecessarily restricted as there is no guarantee that the environmental conditions will result in an actual ship-helicopter interoperability limitation. Limited WOD envelopes plague fleet operations, reduce sortie rates and diminish the Air Combat Element’s effectiveness through limited operational availability. Simulation products have improved considerably in recent years. However, there has not been an extensive effort applied to the technology demonstration and simulation validation. In order for the cognizant engineer to create a WOD envelope based upon simulation data, there must be development and validation of the tool-set. This, to date, has not been accomplished. The DIVE program is designed to improve modeling and simulation products such that they meet specific validation criteria. DIVE is aimed at developing, validating, and implementing a collaborative simulation and test process for the V-22 program. The DIVE effort is directly aligned to produce a collaborative simulation and test process to establish and certify aircraft launch and recovery envelopes (LREs). The primary technologies to be matured and transitioned within the DIVE program include Testing for “Truth” Data, Integrated Simulation Evaluation and Demonstration, Verification & Validation Method Development and Implementation, and Technical Element Development including: Coupled Aircraft-Ship Interactional Aerodynamics, High Fidelity Ship Airwake Models, Piloted Simulation Environment, Simulation Airframe Model, as well as Other Subsystem Models and Key Elements.