Two summer aerospace programs for middle and high school students will be offered by the department of aeronautical and astronautical engineering. Open to students entering seventh or eighth grades, "Why Does It Fly?" will meet from 8 a.m. to noon June 12 through 16. Through a hands-on approach of experiments, demonstrations and models, participants will be introduced to the principles of flight, aerodynamics and propulsion. The registration fee is $70. The Illinois Aerospace Institute is a residential program for students entering grades nine through 12. The institute, to be held June 9 through 15, provides a multifaceted introduction to aerospace science and engineering through classroom studies, laboratory work, field trips and workshops. Activities include talking with a NASA astronaut and aerospace engineering specialists; flying at the Institute of Aviation; and designing, building and flying model airplanes and rockets. The registration fee for the institute is $700. Further information and registration forms are available from Diane Jeffers, 306 Talbot Lab, MC-236; 244-8048; firstname.lastname@example.org.