ar
The tine-bese error for the Conred recorders wes 40.069. percents
therefore, the reedout exxor wee negligible, end the errors of the
Conrad I system (of the order of 10 percent) could be sttributed to
the detector itself.
For the Gustave I system, a = <1, ands
dc. = ot
(2.9)
Hence the Gustave I system error wes essentially that of the detector
(the time=base error 20,02 percent), and was of the order of 10 percant.
“4 BEACHBALL RADIATION DETECTOR-TELEMETER UNIT
To attain the objective ef measuring the yesidual-expoeure rate on
the crater of 2 lend-surfece burst, s droppable sediation detector-
telemeter unit wes devised. A Guetave I detector systen was connected to
key a 1/2—wett VHF tronemitter that had been constructed in the field.
Ti.c Getoctor and transmitter werc mounted in a polyethylenc bottic
suspended at the center of an alr-inflated, 5-foot, plastic beachball.
The beachball was etteched to se 27-pound lead brick by means of ea 6-foot
Line. This made it poesible to drop the system from a helloopter more
accurstely with « minimm of impect shock to the instrunmtation. The
lead brick hit the ground first and ellowed the beachbell to slow dow
over the 6-foot distance before hitting the ground, In addition, the
beachball iteelf acted as a good imect sbeorber. Once the beachball
was relessed, the helicopter could go e« short distance amsy amd orbit in
a radiclogically safe region, while receiving the date transmitted froc
the beachball uit.
ST. by Fe’