Jump to content

Welcome to the Future Flight Standards Hub

The Future Flight Standards Hub is designed to accelerate the development of Future Flight demonstrators and wider industry innovation based on emerging best practice, knowledge sharing, and standards support.

  • BSI Flex 1903 v2:2024-06 community preview

    This is an interactive version 2 of BSI Flex 1903. The aim of the standard is to create a lexicon of standard terms and acronyms used in this sector. Please note, content is still undergoing internal review and there may be minor changes at full publication.

    We welcome your engagement and comments on this version to help inform the development of the standard. We would also welcome general feedback including what terms could be considered for future versions and these can be made through our dedicated feedback page .

multirotor aircraft



  • Definition

    VTOL-capable aircraft (VCA) (3.1.143) which depends principally on engine-driven rotors fixed to a substantially vertical axis for all flight regimes


    NOTE 1 Also referred to as “multicopter”.

    NOTE 2 Multirotor aircraft have more than two rotors.


    Previous Version: 1.0 Release date: September 2023 


    heavier-than-air aircraft capable of vertical take-off, vertical landing, and low-speed flight, which depends principally on more than two engine-driven rotating aerofoils (propellers) which is not equipped with any fixed aerofoil(s) for lift during horizontal flight

     NOTE: A multirotor can also be referred to as a “multicopter”.

  • Create New...