Moreover, the convergent angle, divergent angle, and draw ratio of the nozzle throat
section dramatically affect the expansion state.
In the VTSPS, the thrust of the nozzles is controlled by changing the nozzle throat
area using a pintle actuator.
The flow rate for each test point was calculated by Equation 4, where 5 denotes the section upstream of the nozzle and 6 indicates the nozzle throat
Motor upgrades from a shuttle booster include the addition of a fifth segment, a larger nozzle throat
, and upgraded insulation and liner.
Serial No Nozzle Parameters Values 1 Inlet Diameter 23.35 mm 2 Outlet Diameter 24.12 mm 3 Throat Diameter 16.00 mm 4 Distance between Inlet and nozzle throat
14.78 mm 5 Distance between nozzle throat
and outlet 19.71 mm 6 Inlet Pressure 3 Bar 7 Gauge Pressure 1 Bar 8 Exit mach 2.4 Mach 9 Temperature of the gas at inlet 300 K 10 Boundary condition applied at inlet PRESSUE_INLET 11 Boundary condition applied at outlet PRESSURE_OUTLET 12 Boundary condition applied for chamber PRESSURE_OUTLET design 13 Boundary condition applied at axis SYMMETRY 14 Boundary condition applied at the nozzle WALL wall 15 Boundary condition applied for MDT WALL 16 Atomizing gas used Nitrogen 17 Courant number used - Radial 5 CFL measurement 18 Courant number used - Axial 0.1 CFL measurement
This would allow one of the most replaced items on fighter aircraft, the nozzle internal flap (the area between the exhaust nozzle throat
and exit) to be designed based on thermal rather than mechanical constraints.
First of all, the simulation of engine internal flow field is carried out, and the nozzle throat
section parameters are as the inlet boundary.
The flow rate for each test point was calculated by Equation 3, where 5 denotes the section upstream of the nozzle and 6 indicates the nozzle throat
that extended about 100 microns into the ink-supply channel.
The flow rate for each test point was calculated by Equation 2, where 5 denotes the section upstream of the nozzle and 6 indicates the nozzle throat