' We plan to expose three types of panels: (1) a! over an aluminun honeycomb core, which is the most usual; (2), aluminum over a balsa core; and (3) a phenolic laminate over a balsa core. We plan to make appropriate mechanical tests of both the pre-shot cuttings (when we furnish the panels we will furnish a pre-shot cutting - a cutting of that panel as fabricated and on which further tests will be conducted) and on the exposed panel itself, We hope to find a significant degradation in mechanical strength properties between these two samples and with correlation with temperature rise, temperature-time history, and the photographs, be able to document just how much of this we can stand in terms of temperature rise. Cook Research Laboratories will conduct the project for us. Most of our construction requirements have been combined with those of Dr. Plum of Projects 8.1 and 8.2, The only remaining construction to be done will be submitted soon. We want to put the panels on Dog soon before Cherokee ani, as soon as permitted, to remove the panels, mounting, and instrumentation. We expect to have a total of four men in the field, Any questions? Q: What is the total thermal energy level? A: Approximately 40 to 70, Q: A: what will the size of the panels be? 15" by 15" = which is the ASTM standard size. Project 8.5 = Airborne High Resolution Spectral Analysis - R, Zirkind ~ BuAer Project 8.5 is essentially an airborne version of the NRDL spectrometer system. We intend to get the same type of information in the air that Project 8.1 gets from spectrometers on the ground. In addition to this, we plan to participate in a yield range of shots so we can get the spectrometer data from about 50 kt to 5 Mt, so that such information would be available from spectrometers as compared to all previous events where only the calorimeters with filters provided wave length information. The events we intend to participate in are Cherokee, Zuni, Huron, Mohawk, and Lacrosse. What we propose to do is mount the spectrometer on an aircraft and fly over at time zero the furthest land station, or at a distance, if necessary, which would be compatible with the safety of the aircraft proper. It may be possible in the Cherokee shot that we will have to be at some distance, possibly a mile further away than the land stations. This will give transmission information and also data to correlate with the data on the ground. Furthermore, we will be able to compare with the black-body temperatures obtained by a refined wave length measurement and also a higher time resolution which is about a factor of 10 over that or 20 for the calorimeters, In the Mohawk shot we would like to fly over ground zero and look straight down and see if there are any significant factors resulting from a shock wave - 55 tenia