Researchers will be evaluating the performance
of the probe originally developed by Eagle
Aeronautics of Hampton, Virginia, and redesigned
by NASA for this phase. The probe will be tested
in a flight environment and the results will be
compared with a traditional NACA-style probe
that was flown on the centerline instrumented
pylon in 2012.
In addition to obtaining air data measurements
underneath the F-15B, the probe will measure the
strength of a shockwave generated from, as of
yet, an undetermined part of the F-15B aircraft
structure."You want to have minimal lag in your
measurement system in order to accurately
characterize the intensity of the shockwave,"
said Mike Frederick,
NASA Armstrong principal investigator of the
Eagle Aero Probe.
"With this probe, pressure changes are seen
almost immediately because the pressure sensors
are located within about four inches of the
pressure ports on the nosecone. For comparison,
on the F-15B nose boom, which has been used for
air-to-air probing in the past, the pressure
transducers are located back in the radome,
approximately 15 feet behind the pressure
A later phase of the testing
will be to install the probe on either the nose
of the F-15B, or on one of NASA's F-15D aircraft
based at Armstrong,
Pauer said. The Eagle Aero Probe will replace
the current nose boom during shockwave probing
research flights, he added.