A spacecraft , comprising: - a body ; - a solar array , including a support panel which is articulately connected to the body; - a thermal radiator , which is articulately connected to the body, and which includes a radiator substrate that is thermally coupled to the body via at least one heat link ; wherein the solar array comprises a plurality of concentrator reflector members , each concentrator reflector member including a photovoltaic cell and a reflective area provided on opposite sides and being mechanically coupled to the support panel along one edge and suspended freely and bendable away from the support panel along an opposite edge; wherein the support panel and the thermal radiator are elastically deformable to allow the solar array and the thermal radiator to be temporarily bent from a mechanical equilibrium shape into a similarly curved, mutually overlapping and abutting arrangement; wherein the solar array and thermal radiator are configured to be transitioned from: a stowed state wherein the support panel and the radiator substrate are held fixed in the similarly curved, mutually overlapping and abutting arrangement along and near the body to provide geometrical stiffness and an increased mechanical resonance frequency for the solar array and thermal radiator, with the support panel situated between the body and the radiator substrate , and with the radiator substrate functioning as a protective cover that temporarily abuts and retains the concentrator reflector members flattened against the support panel, to a deployed state wherein the solar array is formed back to its equilibrium shape and is unfolded with the support panel positioned at a distance from the body, and the radiator substrate is folded away from the body and the solar array, thereby allowing the concentrator reflector members to raise and reposition into an extended state and allow the reflective areas to reflect solar radiation towards the exposed photovoltaic cells. - a body ; - a solar array , including a support panel which is articulately connected to the body; - a thermal radiator , which is articulately connected to the body, and which includes a radiator substrate that is thermally coupled to the body via at least one heat link ; a stowed state wherein the support panel and the radiator substrate are held fixed in the similarly curved, mutually overlapping and abutting arrangement along and near the body to provide geometrical stiffness and an increased mechanical resonance frequency for the solar array and thermal radiator, with the support panel situated between the body and the radiator substrate , and with the radiator substrate functioning as a protective cover that temporarily abuts and retains the concentrator reflector members flattened against the support panel, to a deployed state wherein the solar array is formed back to its equilibrium shape and is unfolded with the support panel positioned at a distance from the body, and the radiator substrate is folded away from the body and the solar array, thereby allowing the concentrator reflector members to raise and reposition into an extended state and allow the reflective areas to reflect solar radiation towards the exposed photovoltaic cells. <EOS>