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Showing 1 to 11 of 11 for “"thrust measurements"”.
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Turbine Engine Thrust Measurements Using a Non-Intrusive Acoustic Technique
Experiments were conducted to measure the thrust generated from a commercial jet engine. This thrust estimation was done using a pneumatic horn as the sound source with two arrays of microphones directly across the exhaust stream. The two arrays were separated by an axial distance downstream. …
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Development and characterization of an inertial electrostatic confinement thruster
… work is focused on the development of an IEC thruster based on the jet mode of operation. Discharge characteristics of the IEC jet mode were studied. Current, thermal power, thermal efficiency and thrust measurements were obtained. As an addition, helicon plasma injection into the IEC was …
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Effect of Nozzle Pressure Ratio on Thrust and Flow Behavior in a Supersonic De Laval Nozzle
… an ideally expanded condition yields optimal thrust, practical propulsion systems rarely operate at this design point due to variations in altitude and engine operating conditions. As a result, nozzles frequently operate in off-design conditions. In overexpanded regime, where the exit pressure …
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Propulsion performance of a microcavity discharge device
… device modified for use as an electrothermal thruster, called a MCD thruster. Development of the MCD thruster was primarily experimental in nature, although computational modeling provided validation and suggested future development paths. Three types of tests were performed to validate the …
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Design Studies for Future EAD-Propelled Aircraft
… on flight components, and large-scale thrust measurements. Detailed design of aircraft components is completed and a full airframe is manufactured. A flight test campaign consisting of both indoor and outdoor tests is completed to quantify the flight characteristics of the airframe and …
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Thrust measurement of the busek bht 20 microhall effect thruster
… results of testing a low power micro-hall effect thruster suitable for various mission objectives such as orbital maneuvers, momentum dumping, and precision pointing for microsatellites. The BHT 20 is a low power micro-hall effect thruster capable of generating thrust at the µN thrust level. The …
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Investigation of a space propulsion concept using inertial electrostatic confinement
… asymmetry of the inner IEC grid. Langmuir probe measurements showed that some ion losses occurred due to the experimental setup. These losses were reflected in thrust measurements at the exhaust of only a few micronewtons. However, with improvements to the facilities and experimental setup, …
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Fabrication and characterization of porous metal emitters for electrospray applications
Electrospray thrusters provide small, precise thrust with high power efficiencies and variable specific impulses from less than 1000s to over 4000s. The miniaturization and clustering of many emitters together is essential to increase the thrust density of electrospray devices in order to increase …
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Microthrusters based on the T5 and T6 hollow cathodes
… the development of a low power, low cost microthruster able to offer propellant savings over conventional alternatives and enable higher energy missions. Such a thruster would also be beneficial in the development of all-electric spacecraft whereby the normally separate reaction control system …
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Development, thermal analysis, and verification of an inverted pendulum thrust stand
… construction of a null-style inverted pendulum thrust stand for the University of Illinois at Urbana-Champaign’s Electric Propulsion Laboratory (EPL). Hanging, torsional and inverted pendulum thrust stands are briefly discussed followed by an in-depth discussion of the University of Illinois at …
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Diagnostic techniques for EHD and MHD interaction
… field existing between successive phases. Measurements of the induced speed had shown the effect of the supply voltage and the frequency, and the phase order in the momentum transfer phenomenon. Gains in velocity, inside the boundary layer, of about 5m/s have been obtained. Spectroscopic …