2.6.1 Objective To investigate the validity of the static pressure scaling laws for large yield surface bursts. The principal pressure region of interest is above 40 psi. In addition, supporting pressure-time meagtiréments will be obtained within the Project 3.3 tree stand. Self-contained, flash initiated pressure-time recording gages in ground; baffles will be installed at various distances from ground zero, generally in the pressure region above 40 psi. In addition, pressure-time gages will be placed in ground baffles ahead of the Project 3.3 trg@ stand, within the tree stand and behind the tree stand 4s an instrume ion service to Froject 3.3 personnel. 2.6.3 RemarksThe self-contained mechanical gage was field tested during UPSHCT-KNOTHULE, The stated accuracy of the gage is + 10 per cent. rroject 1.2b will participate in all shots. Limitations imposed by Rad-Safe considerations may, restrict the participation to fewer shots. 2.7 Eroject Number: Sponsor: ject 2.7.1 ASP Cfficer: 1. Shock Winds and Af'terwinds ‘) BerformingAgency: Dr. i Harding Chiective Sandia Corporation iAY CS To determine the dynamic prbsetrentime characteristics of the shock wave produced by large yield surfh¢e bursts. 3 2.7.2 Procedure lJ Fitot tubes oriented toward ground zero {will be installed on islands at approximately 5 ft above the ground ;at three different ground ranges. ‘The pitot tube will contain al.side~on pressure opening and the static pressure will be obtained for couparative purposes. In addition, a multiple instrument station will be/installed on George. This station will contain a density gage,'4 temperature gage, a pitot tube, a drag gage and a ground level presstire gages 2.7.3 Remarks Bravo. "Limitations imposed by Rad-Safe considerations my re the participation to fewer shots. fot ied 22