  Satellite Communications (SatCom) are a backbone of worldwide development. In
contrast with the past, when the GEO satellites were the only means for such
connectivity, nowadays the multi-orbital connectivity is emerging, especially
with the use of satellite constellations. Simultaneously, SatCom enabled the
so-called In-Flight Connectivity, while with the advent of 5G-NTN, the
development of this market is being accelerated. However, there are still
various missing points before such a technology becomes mainstream, especially
in the case of Rotary Wing Aircraft (RWA). Indeed, due to their particular
characteristics, such as the low altitude flights and the blade interference,
there are still open challenges. In this work, an End-to-End (E2E) analysis for
the performance of SatCom under 5G-NTN for manned and unmanned RWA is
performed. Various scenarios are examined, and related requirements are shown.
The effects of blades and other characteristics of the RWA are established, and
simulations for these cases are developed. Results along with related
discussion are presented, while future directions for development are
suggested. This work is part of the ESA ACROSS-AIR project.
