SAE AIR1657B

1 SCOPE
2 REFERENCES
  2.1 SAE Publications
  2.2 ASTM Publications
  2.3 NAS Publications
  2.4 NFPA Publications
  2.5 ISO Publications
  2.6 Other Publications
  2.7 U.S. Government Publications
3 TECHNICAL REQUIREMENTS
  3.1 Metric Units
  3.2 Hydrostatics
      3.2.1 Static Head
      3.2.2 Axial Force
  3.3 Hydrodynamics
      3.3.1 Bernoulli's Theorem
      3.3.2 Viscosity
      3.3.3 Reynolds Number
      3.3.4 Friction Loss
      3.3.5 Momentum
      3.3.6 Pressure Momentum Equation
      3.3.7 Pump Efficiency
  3.4 Thermodynamics
      3.4.1 Warm-up of Hydraulic Fluid
      3.4.2 Thermal Expansion
      3.4.3 Adiabatic Tangent Bulk Modulus
      3.4.4 Hydraulic Actuation System Oscillations
      3.4.5 Adiabatic Secant Bulk Modulus Effects
      3.4.6 Cooling of Hydraulic Fluid
  3.5 Fluid Properties
      3.5.1 Source of the Data
      3.5.2 Effect of Temperature on Bulk Modulus
4 CONCLUSIONS
  4.1 Consistent Units
  4.2 Simple Calculations
  4.3 Practical Units
5 NOTES

Describes fundamental fluid properties and physical laws governing fluid motion, pressure and other significant aspects in SI metric units.

Metric (SI and CGS) and English units related to aerospace hydraulics are summarized. Conversion of units is provided as required. Fundamental fluid properties and physical laws governing fluid motion, pressure and other significant aspects are described in SI metric units. Examples of application to typical aerospace hydraulic system components are demonstrated.