Flight hardware test results obtained on high power equipment and onthe repeater subsystem of a 12GHz DBS

1986 ◽  
Author(s):  
W. LIEBISCH ◽  
W. RUEMMER
Keyword(s):  
High Power ◽  
Power Equipment ◽  
Test Results ◽  
Flight Hardware ◽  
Hardware Test

Numerical simulation of fairing separation test for hypersonic air breathing vehicle

2016 ◽  
Vol 231 (2) ◽  
pp. 319-325 ◽  
Author(s):  
Ankit Raj ◽  
K Anandhanarayanan ◽  
R Krishnamurthy ◽  
Debasis Chakraborty
Keyword(s):  
Structural Integrity ◽  
Test Results ◽  
Air Breathing ◽  
Aerodynamic Loads ◽  
Pressure Distributions ◽  
Ground Test ◽  
Computational Fluid Dynamics Simulations ◽  
Euler Solver ◽  
Dynamics Simulations ◽  
Flight Hardware

Fairings are provided to cover hypersonic air breathing vehicle to protect it from adverse aerodynamic loading and kinetic heating. Separation dynamics of fairings is an important event in the launch of vehicle. Extensive computational fluid dynamics simulations are carried out for the design of fairings and vehicle and selection of time sequences of various separation events. A ground test of fairing separation is conducted in the sled facility to check the structural integrity and functionality of various separation mechanisms and flight hardware. Simulations have been carried out to study the separation dynamics of fairings at test conditions using grid-free Euler solver to get the aerodynamic loads and the loads are integrated to get the trajectory of fairings. The aerodynamic loads are provided to verify the structural integrity of various components and the trajectory of panels is used in the test planning. The pressure distributions on the vehicle are compared with the test results.

Aluminum Tailored Blank Welding Using Laser Beam Shaping and Twin-Spot Optics

2000 ◽  
Author(s):  
Rey Hsu ◽  
Stefan Fliss ◽  
Stefan Heinemann
Keyword(s):  
Co2 Laser ◽  
High Power ◽  
Beam Shaping ◽  
Laser Source ◽  
Test Results ◽  
Co2 Lasers ◽  
Production Environment ◽  
Tailor Welded Blanks ◽  
Tailored Blanks ◽  
Tailored Blank

Abstract The use of aluminum tailor welded blanks in the automotive industry continues to grow due to the fact that aluminum is lightweight and the characteristics of the tailor welded blanks. It has been found that welding of aluminum blanks with a CO2 laser is difficult but doable in a production environment. By using a high power CW Nd:YAG (Neodynium dopped Yittrium Aluminum Garnet) laser. It is possible to obtain sound results with a much wider process parameter window. However, currently, high power CO2 lasers (in the range of 8 kW) are still the dominate laser source in North America steel tailor welded blank companies. Will these lasers be able to weld aluminum tailored blanks if the demand for aluminum tailor welded blanks increases? This study employed twin spot and beam shaping methods to weld 1mm and 2 mm tailored blanks together using a high power (9 kW maximum) CO2 laser for both 5754-O and 6111-T4 alloys. The results show that high power CO2 lasers can be used to weld 5754-O and 6111-T4 aluminum alloys with very precise parameter settings. However, using beam shaping is more critical than using twin spot for 1 mm thick aluminum blanks. Once the correct parameters are applied for using beam shaping, the cup test results are better than using twin spot.

scholarly journals First High Power Test Results for 2.1 GHz Superconducting Photonic Band Gap Accelerator Cavities

2012 ◽  
Vol 109 (16) ◽  
Author(s):  
Evgenya I. Simakov ◽  
W. Brian Haynes ◽  
Michael A. Madrid ◽  
Frank P. Romero ◽  
Tsuyoshi Tajima ◽  
...  
Keyword(s):  
Band Gap ◽  
High Power ◽  
Photonic Band Gap ◽  
Test Results ◽  
Power Test ◽  
Photonic Band

Preliminary test results on high-power-gasdynamic laser installation for laser technology at Cherepovetz metallurgy work

1994 ◽  
Author(s):  
Alexei A. Betev ◽  
Leonid I. Danilov ◽  
Vyatcheslav T. Karpukhin ◽  
Yuri B. Konev ◽  
Yurii V. Lipukhin
Keyword(s):  
High Power ◽  
Preliminary Test ◽  
Gasdynamic Laser ◽  
Test Results ◽  
Laser Technology ◽  
Laser Installation

Recent DOE Sponsored Electrochemical Capacitor Test Results

1999 ◽  
Vol 575 ◽  
Author(s):  
R. B. Wright ◽  
T. C. Murphy ◽  
D. K. Jamison ◽  
S. A. Rogers
Keyword(s):  
High Power ◽  
Electrochemical Capacitor ◽  
Fast Response ◽  
Department Of Energy ◽  
Constant Current ◽  
Specific Power ◽  
Equivalent Series Resistance ◽  
Test Results ◽  
Constant Power ◽  
Energy Products

ABSTRACTElectrochemical capacitors (ultracapacitors) are being developed for hybrid vehicles as candidate power assist devices for the fast response engine and for other energy storage systems that can utilize the high power densities available from these devices. Ultracapacitors show promise toward being able to accept high regenerative pulses and high power delivery capabilities while exhibiting very high cycle life. This paper will present recent test data from two U.S. Department of Energy (DOE) supported ultracapacitor projects designed to meet the fast response engine requirements. Constant-current and constant-power test results will be presented that have been acquired from recent prototype capacitors supplied by SAFT America, Inc. (ten devices), and Maxwell Energy Products, Inc. (two devices). The SAFT capacitors are rated at 0.5 V to 3 V with capacitance ratings ranging from 135 F to 138 F. Capacitor cells rated at 2.3 V and 101.4 F were also evaluated that were produced by Maxwell Energy Products, Inc. Both sets of devices used proprietary carbon electrodes with non-aqueous electrolytes in their design. From the constant-current discharge tests, the discharge current dependence of the capacitance, equivalent series resistance, and RC-time constant were determined as well as the capacitors’ voltage dependence of the capacitance. Constant-power discharge tests permitted the specific energy as a function of the specific power to be determined, and also the discharge/charge round trip efficiency as a function of the magnitude of the constant-power discharge.

First JT-60 high power 110 to 130 MHz test results with an X2242 tetrode

2003 ◽  
Author(s):  
S. Moriyama ◽  
Y. Ogawa ◽  
T. Fujii ◽  
K. Anno ◽  
S. Shinozaki ◽  
...  
Keyword(s):  
High Power ◽  
Test Results

scholarly journals High Power Combline Filter for Deep Space Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
A. V. G. Subramanyam ◽  
D. Siva Reddy ◽  
V. K. Hariharan ◽  
V. V. Srinivasan ◽  
Ajay Chakrabarty
Keyword(s):  
High Power ◽  
Filter Design ◽  
Test Results ◽  
Rf Power ◽  
Space Applications ◽  
Power Filter ◽  
Rejection Filter ◽  
Design And Testing ◽  
High Rejection ◽  
Orbiter Mission

An S-band, compact, high power filter, for use in the Mars Orbiter Mission (MOM) of Indian Space Research Organization (ISRO), has been designed and tested for multipaction. The telemetry, tracking, and commanding (TT&C) transponder of MOM is required to handle continuous RF power of 200 W in the telemetry path besides simultaneously maintaining an isolation of greater than 145 dBc to its sensitive telecommand path. This is accomplished with the help of a complex diplexer, requiring high power, high rejection transmit path filter, and a low power receive path filter. To reduce the complexity in the multipaction-free design and testing, the transmit path filter of the diplexer is split into a low rejection filter integral to the diplexer and an external high rejection filter. This paper highlights the design and space qualification phases of this high rejection filter. Multipaction test results with 6 dB margin are also presented. Major concerns of this filter design are isolation, insertion loss, and multipaction. Mission performance of the on-board filter is normal.

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