Last month, Aero-News reported on a series of minor improvements Aviation
Technology Group made to its Javelin two-place jet...
and on Wednesday, the company told ANN the changes appear to be
yielding real benefits, as the Javelin prototype successfully
completed two more flight tests in July, expanding its flight test
envelope to higher speeds and altitudes.
ATG reports that during the most recent flights, the Javelin's
new Fowler-type flaps were extended and retracted between full-up
and 20 degrees. Test pilot Kirk Kalstad retracted the landing gear
immediately after takeoff and pushed the Javelin to 335 knots true
airspeed (385 mph) at 15,000 feet. Later, he climbed to 20,000 feet
and accelerated to 0.5 Mach. Bank angles were tested up to 45
Testing included an assessment of the handling qualities of the
aircraft, which involved longitudinal, lateral and directional
stability, as well as trim effectiveness. Tests also evaluated
engine characteristics and performance, and verified airspeed and
"Kirk reported that the aircraft handled well throughout all
test points," said Rob Fuschino, VP of Operations and chase plane
pilot. "An initial data review shows no anomalies from predicted
Prior to the most recent test flights, the Javelin prototype
underwent a series of modifications to increase wing span by 1.85
feet, as well as improve the secondary flight control systems with
the addition of the Fowler flaps. Updates were also made to the
canopy of the sleek jet.
ATG also updated the test aircraft's airborne instrumentation
data acquisition system (DAS), along with associated
Revisions made to the DAS included improvements to the cockpit
audio and video capture, as well as the addition of extra-force
measurements to flight control systems. Also, several
high-sensitivity transducers were added to the Pitot-static system,
which improves data for aerodynamicists.