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The possibility of reducing the propellant requirement by using an engine gimbal mechanism is also presented.
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The DART trajectory must satisfy mission objectives for arrival timing, geometry, and lighting while minimizing launch vehicle and spacecraft propellant requirements.
The high Specific Impulse (Isp) of SEP enables low propellant requirements for removal of many debris objects with a single vehicle, and results in a low cost per target removed.
Electrical propulsion (EP) systems are indeed characterized by low propellant mass requirements, however this comes at the cost of higher electrical power and, typically, higher complexity and mass of the power supply system.
A useful periodic orbit is here intended as one that moves both in the Earth Moon plane and out of this plane without any requirements of propellant mass.
Better insulation for cryogenic feed lines is an important enabling technology that could help NASA reach cryogenic propellant storage and transfer requirements.
For meeting the deviation requirements of ±10% of the steady-state propellant tank pressure, the positive deviation requirement is assured by the self-locking pressure and the negative deviation can be assured within an allowable maximum propellant tank volume flowrate (1.6 times the design value for the proposed system) for downstream thrusters for a designed system.
Stabilized AN-based propellants have been used as the most appropriate propellant compositions that meet these requirements.
Virtually infinite combinations of these variables will satisfy the requirements of mass of propellant, thrust, and burning time in addition to satisfying basic needs for volumetric loading fraction and web fraction.
In consideration of design requirements, an engineering model of solid propellant gas generator was manufactured using the combustion gas properties calculated by a chemical equilibrium code and then hot-fire tests were performed.
Propellant charges must meet a variety of often conflicting requirements.
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