In order to continue the current rate of improvements in aircraft performance, aircraft and
components which are continuously optimized for all flight conditions, will be needed …

'Chevrons', a sawtooth pattern on the trailing edge of exhaust nozzles, are being
implemented on modern jet engines. The technology reduces jet noise for 'separate …

Three amplification mechanisms present in turbulent jets, namely lift-up, Kelvin–Helmholtz
and Orr, are characterized via global resolvent analysis and spectral proper orthogonal …

Variable Geometry Chevrons were successfully flight tested on a Boeing 777-300ER with
GE-115B engines, demonstrating full-scale aerostructure morphing using shape memory …

Double shock diamonds establish in the exhaust of modular convergent–divergent nozzles.
These consist of two shock structures: one originating from the nozzle throat, and another …

THE control of the wake of axisymmetric jet flow has strong implications for a wide variety of
practical flows. The control of such flow primarily concerns military applications but also has …

Boeing is applying cutting edge smart material actuators to the next generation morphing
technologies for aircraft. This effort has led to the Variable Geometry Chevrons (VGC), which …

Boeing is applying cutting edge smart material actuators to the next generation morphing
technologies for aircraft. This effort has led to the Variable Geometry Chevrons (VGC), which …

Measurement of time-averaged velocity, density, temperature, and turbulence velocity
fluctuations in sparsely seeded gas flows using a non-intrusive, point-wise technique based …

Aero-acoustic characteristics of a high-speed jet with chevron nozzles are experimentally
investigated at a Mach number of 0.8. The main focus is to examine the effects of the extent …