SPACECRAFT PROPULSION - KTH

More documents

Recommendations

Info

-iv -Standard NotationsStandard notation used throughout this booklet is given below.C tank filling ratio (V p /V T )E energy [Ws]F force [N]g acceleration of gravity, standard, 9.81 [m/s 2 ]I impulse [Ns]K tank performance factor (P op /m T V T ) [m 2 /s 2 ]M molecular mass [kg/kmol]m mass [kg]m propellant mass flow rate [kg/s]P power [W]p pressure [N/m 2 ]R gas constant 8.314 [kJ/°K/kmol]S/C spacecraftT temperature [°K]x non-impulse dependent system mass (%)v velocity [m/s]z gas compressibility factorv velocity-increment m/s specific power [W/kg] overall power conversion efficiency (P jet /P)κ specific heat ratio specific mass of propellant [kg/m 3 ] thrust time sec]
-v -Subscriptsc motor chambercase motor casee exhaust (effective)e-opt exhaust (optimal)El electric (system)H/W hardwaref finaljet thruster nozzle exhaust0 initialop operatingP propellantPS propulsion systemPSS propellant storage system (tank with propellant)S/C spacecraftsp specificssp system-specificT tanktot total
Page 8 and 9: - 1 -1 INTRODUCTIONThis booklet sum
Page 10 and 11: - 3 -The main features of jet propu
Page 12: - 5 -This expresses that the spacec
Page 17 and 18: - 10 -3.2.3 Evaluation of Mass of P
Page 19 and 20: - 12 -With regard to the system-spe
Page 21 and 22: - 14 -According to Fig. 3 and with
Page 23 and 24: - 16 -Historically, chemical propul
Page 25 and 26: - 18 -gases leave the outlet of the
Page 27 and 28: - 20 -The vaporising liquid system
Page 30 and 31: - 23 -Further, for vaporising liqui
Page 32 and 33: - 25 -ConclusionAlthough of moderat
Page 34 and 35: G- 27 -4.2.3 MonopropellantMonoprop
Page 36 and 37: - 29 -System-specific Impulse, I ss
Page 38 and 39: - 31 -Table 4: Ranges of typical Pr
Page 40 and 41: - 33 -4.2.4 BipropellantBipropellan
Page 42 and 43: - 35 -management devices), propella
Page 44 and 45: - 37 -From Eq. (41) it is obvious t
Page 46 and 47: - 39 -4.2.5 General System Design C
Page 48 and 49: - 41 -System-specific Impulse, I ss
Page 50 and 51: - 43 -4.3 Electric Propulsion4.3.1
Page 52 and 53:
- 45 -To the above described catego
Page 54 and 55:
- 47 -4.3.2 Propulsion System Desig
Page 56 and 57:
- 49 -Fig.17, has to be considered
Page 58 and 59:
- 51 -The term of an optimal exhaus
Page 60 and 61:
- 53 -resulting in a maximum value
Page 62 and 63:
- 55 -Table 8 notes the differences
Page 64 and 65:
- 57 -5 PROPULSION SYSTEMS SELECTIO
Page 66 and 67:
- 59 -m PS/m S/C1,0I ssp=193 Ns/kg(
Page 68 and 69:
- 61 -In considering the merits of
Page 70 and 71:
- 63 -Table 11: Survey: Typical Can
Page 72 and 73:
- 65 -6.1 Potential Improvement of
Page 74 and 75:
- 67 -6.2 Potential Improvement of
Page 76 and 77:
- 69 -6.3 New ApproachesNew approac
Page 78 and 79:
- 71 -Extensive research has been p
Page 80 and 81:
- 73 -8 MISSION SURVEILLANCE OFPROP
Page 82 and 83:
- 75 -[9 W. Inden; “Development R
Page 84:
Notes
show all

SPACECRAFT PROPULSION - KTH

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?