Development of a Cold Gas Propulsion System for the ... - SSL - MIT

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[40] Hill, P. G. and Peterson, C. R., Mechanics and Thermodynamics of Propulsion, 2nd ed., Addison- Wesley, Reading, MA, 1992. [41] Perry, R. H. and Green, D. W. (eds.), "Table 2-179: Compressibility Factors for Nitrogen," Perry's Chemical Engineers' Handbook, 7th ed., McGraw-Hill, New York, 1997, Ch. 2, p. 2−145. [42] Golkar, A. A., "Thermodynamics and Heat Transfer Analysis of the Pressurant Gas Tank for a Liquid Propulsion System," L. Thesis, School of Aerospace Engineering, Università di Roma "La Sapienza", Rome, 2006. [43] Sonntag, R. E., Borgnakke, C., and Van Wylen, G. J., Fundamentals of Thermodynamics, 6th ed., Wiley, Hoboken, NJ, 2003. [44] Lemmon, E. W., McLinden, M. O., and Friend, D. G., "Thermophysical Properties of Fluid Systems," NIST Chemistry WebBook, Linstrom, P. J. and Mallard, W. G. (eds.), NIST Standard Reference Database No. 69, National Institute of Standards and Technology, 2011, URL: http:// webbook.nist.gov/chemistry/fluid/ [cited 30 Mar. 2011]. [45] Sprackling, M. T., Thermal Physics, American Institute of Physics, New York, 1991. [46] Hendricks, R. C., Peller, I. C., and Baron, A. K., "Joule-Thomson Inversion Curves and Related Coefficients for Several Simple Fluids," National Aeronautics and Space Administration, NASA TN-D- 6807, Washington, DC, 1972. [47] Hott Jr., M. W., "Control Valve Components, Definitions, Terminology, and Specifications," ISA Handbook of Control Valves, Hutchison, J. W. (ed.), Instrument Society of America, Pittsburgh, 1971, pp. 3-12. [48] Tescom Corporation, "Flow Formulas for Computing Gas and Liquid Flow through Regulators and Valves," Tescom Technical Support, Aug. 2001, URL: http://www.tescom-europe.com/fileadmin/ user_upload/Tescom_UK/Tescom_Common_Flow_Formulas.pdf [cited 4 Apr. 2011]. [49] Driskell, L. R., "Sizing Theory and Applications," ISA Handbook of Control Valves, Hutchison, J. W. (ed.), Instrument Society of America, Pittsburgh, 1971, pp. 125-140. 126
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Page 1:
Development of a Cold Gas Propulsio
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Abstract The TALARIS (Terrestrial A
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Table of Contents List of Figures .
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7 Ongoing and Future Work .........
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Figure 6-6. Identification of thrus
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Notation Acronyms and Abbreviations
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N newton Pa pascal psi pounds per s
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1 Introduction The TALARIS (Terrest
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the idea of hopping was born, and i
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However, as stated before, this doe
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Figure 2-3. Diagram of ACAT lander
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An alternate approach to resolving
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accurate conditions for testing GNC
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Ballistic hops tend to use less pro
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2.3.2 Comparison of Cold Gas and Mo
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Handling propellant There are sever
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and if the cold gas system was foun
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3 TALARIS CGSE Design Framework Aft
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Figure 3-1. Scaling of TALARIS terr
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(3) Providing attitude control Ther
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Figure 3-2 also shows the body coor
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4 Modeling and Flow Control Compone
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4.1.2 Rocket Propulsion Equations L
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variables in equation (4-8) deal wi
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equations. Equation (4-10) was then
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that of helium (0.227 MPa = 32.9 ps
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thruster solenoid valve, and chambe
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where
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discussed later in section 6.3.4, t
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The flight profile begins with maxi
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hop, any given valve or regulator o
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esponse time was an important perfo
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directly opens and closes the main
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If 1D isentropic flow is assumed, t
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5 Single-Stream Component Testing A
Page 77 and 78: the solenoid valve, and a pressure
Page 79 and 80: As indicated in Figure 5-3, initial
Page 81 and 82: Figure 5-5. CGSE high side as const
Page 83 and 84: Figure 5-7 illustrates several aspe
Page 85 and 86: 6 Full Eight-Thruster Flight System
Page 87 and 88: Figure 6-2. TALARIS CGSE assembled
Page 89 and 90: stream tests revealed that changes
Page 91 and 92: Figure 6-5. Original CGSE control c
Page 93 and 94: other constraints. This was difficu
Page 95 and 96: variables (such as number of thrust
Page 97 and 98: One solution to this problem would
Page 99 and 100: One of the characterization tests w
Page 101 and 102: or more thrusters were firing toget
Page 103 and 104: Table 6-3. Valve timing metrics dur
Page 105 and 106: Figure 6-11. Redesigned CGSE contro
Page 107 and 108: The imaginary simplified thruster c
Page 109 and 110: traverse phase of a hop and involve
Page 111 and 112: Figure 7-3. GNC data from 3-DOF tes
Page 113 and 114: Tests on this vertical stand demons
Page 115 and 116: control the belay line can be put u
Page 117 and 118: accounting for changes in thrust le
Page 119 and 120: development under the supervision o
Page 121 and 122: documenting progress takes time whi
Page 123 and 124: were encountered, it was harder to
Page 125 and 126: [10] Bryant, K. M., Knight, C. J.,
Page 127: [31] Canadian Centre for Occupation
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