accumulator: 1. The working pressure of the electro-hydraulic servo valve can
fluctuate in a certain range; 2. The control system does not require the rudder’s
deviation speed and basically does not require the system to provide instantaneous
supplementary flow; 3. High-pressure feedback self-boosting tank can play a role of
accumulator; 4. Require the hydraulic system designer to carry out the comprehensive optimal design, determine the working condition parameters reasonably,
and put forward constructive counter-requirements for trajectory selection and
control system design.
9.1.6.3 Working Area of Gas Turbine Pump Hydraulic System
Gas turbine pump has the characteristics of quick start, high specific power, convenient use, good reliability, and easy to realize the comprehensive utilization of
auxiliary energy on missile. It is suitable for tactical air defense missiles with high
load cycle percentage and medium working time, and has been widely used at home
and abroad. However, it is not the only ideal solution. From the hydraulic system
working belt (Fig. 9.33), there are three alternatives, including short-term use of gas
pressurized storage tank, long-term use of battery motor variable displacement
pump (Fig. 9.34).
The working area of hydraulic system is a graph composed of a series of equal
power curves with the working time as the abscissa and the system mass as the
ordinate. It is mainly for the analysis and reference of the whole and system in the
demonstration of the scheme. Figure 9.33 shows the mass work belt, which can also
list the volume, cost, and reliability of the work belt. It should be noted that in the
illustration of various schemes, the comprehensive utilization of auxiliary energy on
missile is considered only for the unit agent gas motor pump.
From Fig. 9.33, it can be seen that the optimum selection schemes for different
tactical air defense missile hydraulic systems are as follows:
(1) Gas booster accumulator in short range;
(2) Gas turbine quantitative pump in short and medium range;
(3) Battery electric variable displacement pump in medium and long distance;
(4) The medium and long-distance ramjet is a variable displacement pump of gas
motor.
Figure 9.34 shows the battery electric variable pump hydraulic system of the
American Patriot air defense missile. The battery uses silver–zinc battery with high
current density and high voltage, and the motor adopts a special designed DC
complex-excitation fully enclosed explosion-proof motor with radio frequency
interference filter. Variable displacement pump adopts axial piston pressure compensating variable displacement pump; special helium cylinder is used to pressurize
gas–liquid accumulator and gas booster tank, which is controlled by electric detonation valve before launching; and hydraulic safety valve is used to stabilize
system pressure safety overflow.
9.1 Electro-Hydraulic Servo Control Technology of Aircraft Gas Turbine Pump
113
fluctuate in a certain range; 2. The control system does not require the rudder’s
deviation speed and basically does not require the system to provide instantaneous
supplementary flow; 3. High-pressure feedback self-boosting tank can play a role of
accumulator; 4. Require the hydraulic system designer to carry out the comprehensive optimal design, determine the working condition parameters reasonably,
and put forward constructive counter-requirements for trajectory selection and
control system design.
9.1.6.3 Working Area of Gas Turbine Pump Hydraulic System
Gas turbine pump has the characteristics of quick start, high specific power, convenient use, good reliability, and easy to realize the comprehensive utilization of
auxiliary energy on missile. It is suitable for tactical air defense missiles with high
load cycle percentage and medium working time, and has been widely used at home
and abroad. However, it is not the only ideal solution. From the hydraulic system
working belt (Fig. 9.33), there are three alternatives, including short-term use of gas
pressurized storage tank, long-term use of battery motor variable displacement
pump (Fig. 9.34).
The working area of hydraulic system is a graph composed of a series of equal
power curves with the working time as the abscissa and the system mass as the
ordinate. It is mainly for the analysis and reference of the whole and system in the
demonstration of the scheme. Figure 9.33 shows the mass work belt, which can also
list the volume, cost, and reliability of the work belt. It should be noted that in the
illustration of various schemes, the comprehensive utilization of auxiliary energy on
missile is considered only for the unit agent gas motor pump.
From Fig. 9.33, it can be seen that the optimum selection schemes for different
tactical air defense missile hydraulic systems are as follows:
(1) Gas booster accumulator in short range;
(2) Gas turbine quantitative pump in short and medium range;
(3) Battery electric variable displacement pump in medium and long distance;
(4) The medium and long-distance ramjet is a variable displacement pump of gas
motor.
Figure 9.34 shows the battery electric variable pump hydraulic system of the
American Patriot air defense missile. The battery uses silver–zinc battery with high
current density and high voltage, and the motor adopts a special designed DC
complex-excitation fully enclosed explosion-proof motor with radio frequency
interference filter. Variable displacement pump adopts axial piston pressure compensating variable displacement pump; special helium cylinder is used to pressurize
gas–liquid accumulator and gas booster tank, which is controlled by electric detonation valve before launching; and hydraulic safety valve is used to stabilize
system pressure safety overflow.
9.1 Electro-Hydraulic Servo Control Technology of Aircraft Gas Turbine Pump
113