TY - JOUR
T1 - Intake design for an Atmosphere-Breathing Electric Propulsion system (ABEP)
AU - Romano, F.
AU - Espinosa-orozco, J.
AU - Pfeiffer, M.
AU - Herdrich, G.
AU - Crisp, N.h.
AU - Roberts, Peter
AU - Holmes, B.e.a.
AU - Edmondson, S.
AU - Haigh, S.
AU - Livadiotti, S.
AU - Macario-rojas, A.
AU - Oiko, V.t.a.
AU - Sinpetru, L.a.
AU - Smith, K.
AU - Becedas, J.
AU - Sulliotti-linner, V.
AU - Bisgaard, M.
AU - Christensen, S.
AU - Hanessian, V.
AU - Jensen, T. Kauffman
AU - Nielsen, J.
AU - Chan, Y.-a.
AU - Fasoulas, S.
AU - Traub, C.
AU - García-almiñana, D.
AU - Rodríguez-donaire, S.
AU - Sureda, M.
AU - Kataria, D.
AU - Belkouchi, B.
AU - Conte, A.
AU - Seminari, S.
AU - Villain, R.
PY - 2021/6/26
Y1 - 2021/6/26
N2 - Challenging space missions include those at very low altitudes, where the atmosphere
is source of aerodynamic drag on the spacecraft. To extend the lifetime
of such missions, an efficient propulsion system is required. One solution is
Atmosphere-Breathing Electric Propulsion (ABEP) that collects atmospheric
particles to be used as propellant for an electric thruster. The system would
minimize the requirement of limited propellant availability and can also be applied
to any planetary body with atmosphere, enabling new missions at low
altitude ranges for longer times. IRS is developing, within the H2020 DISCOVERER
project, an intake and a thruster for an ABEP system. The article
describes the design and simulation of the intake, optimized to feed the radio
frequency (RF) Helicon-based plasma thruster developed at IRS. The article
deals in particular with the design of intakes based on diffuse and specular reflecting
materials, which are analysed by the PICLas DSMC-PIC tool. Orbital
altitudes h = 150−250km and the respective species based on the NRLMSISE-
00 model (O, N2, O2, He, Ar, H, N) are investigated for several concepts based
on fully diffuse and specular scattering, including hybrid designs. The major
focus has been on the intake efficiency defined as ηc = ˙Nout/ ˙Nin, with ˙Nin the incoming particle flux, and ˙Nout the one collected by the intake. Finally, two
concepts are selected and presented providing the best expected performance
for the operation with the selected thruster. The first one is based on fully
diffuse accommodation yielding to ηc < 0.46 and the second one based un fully
specular accommodation yielding to ηc < 0.94. Finally, also the influence of
misalignment with the flow is analysed, highlighting a strong dependence of ηc
in the diffuse-based intake while, for the specular-based intake, this is much
lower finally leading to a more resilient design while also relaxing requirements
of pointing accuracy for the spacecraft.
AB - Challenging space missions include those at very low altitudes, where the atmosphere
is source of aerodynamic drag on the spacecraft. To extend the lifetime
of such missions, an efficient propulsion system is required. One solution is
Atmosphere-Breathing Electric Propulsion (ABEP) that collects atmospheric
particles to be used as propellant for an electric thruster. The system would
minimize the requirement of limited propellant availability and can also be applied
to any planetary body with atmosphere, enabling new missions at low
altitude ranges for longer times. IRS is developing, within the H2020 DISCOVERER
project, an intake and a thruster for an ABEP system. The article
describes the design and simulation of the intake, optimized to feed the radio
frequency (RF) Helicon-based plasma thruster developed at IRS. The article
deals in particular with the design of intakes based on diffuse and specular reflecting
materials, which are analysed by the PICLas DSMC-PIC tool. Orbital
altitudes h = 150−250km and the respective species based on the NRLMSISE-
00 model (O, N2, O2, He, Ar, H, N) are investigated for several concepts based
on fully diffuse and specular scattering, including hybrid designs. The major
focus has been on the intake efficiency defined as ηc = ˙Nout/ ˙Nin, with ˙Nin the incoming particle flux, and ˙Nout the one collected by the intake. Finally, two
concepts are selected and presented providing the best expected performance
for the operation with the selected thruster. The first one is based on fully
diffuse accommodation yielding to ηc < 0.46 and the second one based un fully
specular accommodation yielding to ηc < 0.94. Finally, also the influence of
misalignment with the flow is analysed, highlighting a strong dependence of ηc
in the diffuse-based intake while, for the specular-based intake, this is much
lower finally leading to a more resilient design while also relaxing requirements
of pointing accuracy for the spacecraft.
U2 - 10.1016/j.actaastro.2021.06.033
DO - 10.1016/j.actaastro.2021.06.033
M3 - Article
SN - 0094-5765
JO - Acta Astronautica
JF - Acta Astronautica
ER -