Radio-frequency attezmuation measurenents were atte=pted by che exployment
of 225-ac and 1500-ec transuitters, czrriad aloft on two-stage rockets, and
the recording of received sigaal strength at two separate locations.
Cetical ‘astrumentation included high-speed and longer Cime photograzhy
through three different narrmrband filters, a high-resolsticn spectral record,
location of burst position by plate cameras located at each MIDOT station, and
black and white and color documentary photography.
‘
Warbeads used on the high-altitcce shots were ecdified, installed, checked
out, and areed by Program 32 personnel.
1.2.2
Teak Conclasions
All equipmenc used on the Teak experiment operated as designed with the
following exceptions:
(1) The evo rad-chem samplers appeared to suffer structural damage at the
time of second-stage burning, became uustable, and fell back to the reef near
Jotmston Island.
Many of the parts were recovered by skin diving, ami the type
of failure, if moc the primsry cause, was deduced.
(2) Two Viper Li-arrow I transmitter-carrying rockets failed at firststage burnout and fell back on the western part of Johnston IslanB.
These vere
to bawe been above the burst at burst time, and their failure thereby resulted
in no data on radiofrequency attenuation through the “fireball" region.
A sub-
sequent test firing verified this failore, although the assembly was flown successfully in ove pre-Teak test firing.
Three of the transmitter-carrying
rockets prodaoced good data.
(3) The displaced burst point vas outside the beam of the antenna receiving
the h-tac diagnostic sigral and no {aformtion was received for this reason.
The signal, though weak, was seen at the ceceiving station, act sporeticn cf
the system was verified by c00-ac acnitor telemetry.
(4%) Two of the instrument carriers, those planned for the 50,000- and
80, 000-foot stations (K-48 and TMK-80) were not recovered.
Radio-frequeacy
Signals {odicated that the K-48 chure operaced satisfactorily, but che length
of time consumed in searching for orher nose cones and pods nay have pernitted
this pose to fill wich wacer and sink.
The RF signal frow TMK-€O indicated
failure of either che IM transmitter or tie rocket shortly afcer launch.
aE
43