3 edition of An extended life and performance test of a low-power arcjet found in the catalog.
An extended life and performance test of a low-power arcjet
by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, DC], [Springfield, Va
Written in English
|Statement||Francis M. Curran and Thomas W. Haag.|
|Series||NASA technical memorandum -- 100942.|
|Contributions||Haag, Thomas W., United States. National Aeronautics and Space Administration.|
|The Physical Object|
including pulse rise time, mass flow rate, and arcjet geometry. 6 A hr/ cycle lifetest of a laboratory model thruster was completed 7 and flight-type systems have been built for life, performance, and satellite integration testing. 8,9 Langmuir probe surveys of the plume have measured electron number. An arcjet thruster has a constrictor and nozzle defining an arc chamber. The constrictor has an insulator and an anode. The constrictor defines a subsonic-to-supersonic transition zone axially coextensive with the inculator and anode. The anode is disposed side-by-side with the insulator and located upstream therefrom. A rod defines a cathode spaced from the anode by a by:
Performance test of a 14 cm xenon ion thruster. Y. HAYAKAWA, K. MIYAZAKI and; Performance effects of interaction between a low-power arcjet and its power processing unit. RONALD SPORES, JEFFREY POBST, Extending the life of the SSME HPOTP through the use of annular hydrostatic bearings. JOSEPH SCHARRER, ROBERT HIBBS. qualification-level life test of a flight-type hardware. With commercial acceptance of second arcjet technology, the OBP program is now focused on low power arcjets (LPATs) for power-limited spacecraft. Over the past year, sub-kW arcjet systems have been considered for application to LEO/MEO orbit insertion, NSSK of power limited.
Testing of an Arcjet Thruster with Capability of Direct-Drive Operation Adam K. Martin, Kurt A. Polzin∗, Richard H. Eskridge, James W. Smith, Michael P. Schoenfeld, Daniel P. Riley NASA-Marshall Space Flight Center, Huntsville, AL Author: Adam K. Martin, Kurt A. Polzin, Richard H. Eskridge, James W. Smith, Michael P. Schoenfeld, Daniel P. The Best Battery Life Laptops for Don't be left without juice just when you need it most. We've tested hundreds of laptops to find Author: Tom Brant.
Clean Air Act operating permit program
spirit of the game
The pathology of ante-natal life : an address delivered before the Glasgow Obstetrical and Gynaecological Society
List of types of Lepidoptera in the Edwards collection of insects
A treatise on the astrolabe
American short stories of the nineteenth century.
Analysis of radiant environment in forest canopies
historical study of internal migration in the Indian sub-continent, 1901-1931
So cruel world
catalogue of printed books and manuscripts by Jonathan Swift, D.D.
Performance and preliminary life test of a low power hydrazine engineering design model arcjet Aerospace Science and Technology, Vol. 15, No. 7 Modeling Study on the Flow, Heat Transfer and Energy Conversion Characteristics of Low-Power Arc-Heated Hydrogen Cited by: Get this from a library.
An extended life and performance test of a low-power arcjet. [Francis M Curran; Thomas W Haag; United States. National Aeronautics and Space Administration.]. An automated, cyclic life test was performed to demonstrate the reliability and endurance of a low power dc cycle arcjet thruster.
Over hr and on-off cycles were accumulated which would represent the requirements for about 15 years of on-orbit : Thomas W. Haag and Francis M. Curran. Low power arcjet life issues. Extended life and performance test of a low-power arcjet. Francis M. Curran and An extended life and performance test of a low-power arcjet.
FRANCIS CURRAN and. Extended life and performance test of a low-power arcjet By Thomas W. Haag and Francis M. Curran Topics: SPACECRAFT PROPULSION AND POWERAuthor: Thomas W. Haag and Francis M.
Curran. Close Drawer Menu Close Drawer Menu Menu. Home; Journals. AIAA Journal; Journal of Aerospace Information Systems; Journal of Air Transportation; Journal of Aircraft; Journal of Guidance, Control, and Dynamics. The results show that performance indices of the arcjet thruster with 1kW arc heating are improved by amount of % in thrust and % in specific impulse more than frozen flow.
type on low power arcjet thruster performance. Three kinds of gases, i.e. argon, nitrogen and nitrogen/ammonia mixtures simulating decomposed hydrazine, were used as the propellants. Important performance data, such as the thrust, the specific impulse, etc, were measured for various arc currents and mass flow rates.
An automated, cyclic life test was performed to demonstrate the reliability and endurance of a low power dc cycle arcjet thruster. The Surface Book really is the ultraportable that can do it all.
It's got great performance, strong battery life and a gorgeous inch touch screen with stylus support.4/5. A modeling study is conducted to investigate the effect of hydrogen content in propellants on the plasma flow, heat transfer and energy conversion characteristics of low-power (kW class) arc-heated hydrogen/nitrogen thrusters (arcjets).Cited by: Low power arcjet life issues.
By M. Simon, T. Hardy, S. Knowles and F. Curran. Abstract. The present evaluation of the results of arcjet engine lifetime testing attempts to deepen understanding of the electrode erosion process, with a view to its minimization. Attention is given to the compatibility of materials with N2H4, the.
The Interaction Heating Facility (IHF), with an available power of over MW, is one of the highest-power arc jets available.
It is a very flexible facility, capable of long run times of up to one hour, and able to test large samples in both a stagnation and flat plate configuration. Low power arcjet technology provided definitive work on atomic species plume concentrations in low power hydrogen arcjet plumes.
An extended life and performance test of a low-power arcjet. Extended life coolants (ELCs) started gaining traction in the heavy-duty trucking and construction equipment industry about a decade ago. These coolants are so good they can in many cases last the.
American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA An experimental investigation of a low power arcjet plume was conducted using emission spectroscopy. A laboratory model arcjet incorporating a segmented anode was run on simulated hydrazine at a.
Which browser is best for battery life: We test Edge vs. Chrome vs. Opera vs. Firefox In this power struggle, the answer is not what you'd : Gordon Mah Ung. The GE/RRC arcjet system has undergone thermal-mechanical qualification tests, cyclic-life tests, plume impact tests, as well as thermal loading and contamination experiments (refs.!.5_.
The thruster qualification test program included acceptance vibration tests, functional tests, performance maps, life Size: 1MB. The purpose of this paper is to present experimental results on the performance and operating life of a kW plasma jet rocket engine for space propulsion.
The arc jet rocket engine is currently the simplest of the different proposed electric propulsion : Richard R. John, John F. Connors, A. Mironer. Endurance Test of Microwave Engine a framework for a complete thruster model that can be used for long-life performance assessment and life validation.
electrostatic probes to a. The Windows performance power slider enables end customers to quickly and intelligently trade performance of their system for longer battery life. As a customer switches between the four slider modes to trade performance for battery life (or vice versa), Windows power settings are engaged behind the scenes.
May 2, pm First firing of our Arc-Jet Engine using a nitrogen discharge in a vacuum test chamber at the Space Sciences Lab at .