Performance of propellants

No detailed tests have been reported for the performance of propeller calandrias. Not enough is known regarding the performance of the propellers themselves under the cavitating conditions usually encountered to permit predicting circulation rates. In many cases, it appears that the propeller does no good in accelerating heat transfer over the transfer Tor natural circffiation (Fig. 11-23). 

Nitrogen Oxides as Rocket Fuel Oxidants Including The Theoretical Performances of Propellant Systems Employing Nitrogen Tetroxide , JPL PR No 9-23, Cal Inst Tech, Proj No TU2-1,... 

Dioctyl azelate (trade name - Emolein) Dioctyl adipate (DOA) Bring down viscosity of HTPB and consequently, increase solids loading which improve performance of propellants and PBXs. 

Specific impulse,, the universally accepted measure of rocket engine performance, can also be used to indicate the performance of propellants. The most commonly stated expansion ration is 1,000 14.7 giving sea-... 

The parameters most commonly used to evaluate the performance of rocket engines are introduced first. From these, the significant parameters which determine the performance of propellants are derived. Similar to the approach in (15) simplified expressions will be derived theoretically in terms of the thermodynamic and other properties of the system in order to give insight into the fundamental significance of the individual performance parameters. These simplified expressions are derived from the so-called ideal rocket motor analysis. More accurate derivations are deferred until the next sections where the appropriate aspects of chemical thermodynamics are developed. 

Coefficients for equations which express the dependence of heat capacity, enthalpy, and entropy on temperature, in the range 150-6000 K have also been computed [801] for the purpose of obtaining equilibrium compositions and theoretical rocket performance of propellants the form of the equations are given below (the actual coefficients are too dated to be worth quoting) ... 

Hixson AW, Baum SJ. (1942) Performance of propeller in liquid-solid systems. Ind. Eng. Chem., 34 120-125. 

The version of BKW that calculates the propellant performance is called ISPBKW and the executable code is included on the CD-ROM. The calculation of the performance of propellants is discussed in Chapter 2.8. 

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