A radiant energy power source structure for providing electrical power to a jet aircraft is disclosed. The device comprises a plurality of inward facing longitudinal ribs arranged in an annular configuration positioned radially outward of the plurality of perforations in the combustion liner of a jet engine. The longitudinal ribs are attached to a base which are a part of the outer combustion casing in the combustion section of the jet engine. In addition to air passing over the longitudinal ribs, helically wrapped fuel passageways are additionally incorporated into the base. Interiorly to the channels formed by the longitudinal ribs are an upper and lower groove formed in each longitudinal rib, the lower of the two grooves adapted to receive a plurality of photovoltaic cells receiving the radiant energy, the photovoltaic cells arranged in a series electrical connection in the circular direction. The circular series is broken at one point to carry off the electrical power. Immediately inward of the photovoltaic cells in each formed channel is a protective plate securing the cell against dust particles carried by the incoming air and possible flame emission from the combustion liner. Means are further provided to bleed air into an air gap created between the cell and the protective plate in order to equalize air pressure on both sides of the plate.