following the completion of his shuttle mission, cenker returned to work in the civilian aerospace field. cenker's last two years with rca astro-electronics and it's successor ge astro space were spent as manager of payload accommodations on an eos spacecraft program. after leaving ge, cenker served as a consultant for various aerospace companies regarding micro-gravity research, and spacecraft design, assembly and flight operations. cenker supported systems engineering and systems architecture studies for various spacecraft projects, including smallsats, military communications satellites, and large, assembled-in-orbit platforms. his contributions included launch vehicle evaluation and systems engineering support for motorola on iridium, and launch readiness for the globalstar constellation. other efforts include systems engineering and operations support for intelsat on intelsat k and intelsat viii, for at&amp;t on telstar 401 and 402, for fairchild-matra on spas iii, for martin marietta on astra 1b, bs-3n, acts, and for the lockheed martin series 7000 communications satellites.