  Research attention on natural user interfaces (NUIs) for drone flights are
rising. Nevertheless, NUIs are highly diversified, and primarily evaluated by
different physical environments leading to hard-to-compare performance between
such solutions. We propose a virtual environment, namely VRFlightSim, enabling
comparative evaluations with enriched drone flight details to address this
issue. We first replicated a state-of-the-art (SOTA) interface and designed two
tasks (crossing and pointing) in our virtual environment. Then, two user
studies with 13 participants demonstrate the necessity of VRFlightSim and
further highlight the potential of open-data interface designs.
