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Monday, May 18, 2020 | History

4 edition of Improved speed control system for an 87,000 hp wind tunnel drive found in the catalog.

Improved speed control system for an 87,000 hp wind tunnel drive

Improved speed control system for an 87,000 hp wind tunnel drive

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  • 29 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC], [Springfield, Va .
Written in English


Edition Notes

StatementEdward A. Becks, Timothy J. Bencic, Philip Z. Blumenthal.
SeriesNASA technical memorandum -- 106840.
ContributionsBencic, Timothy J., Blumenthal, Philip Z., United States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL17007966M
OCLC/WorldCa32764720

Excellent paddlewheel-based control. High-visibility, sunlight viewable, character LCD display. Four-button keypad for simple operation. Built-in water temperature function. Perfect for wakesports including wakeboarding, wakesurfing, wakeskating, kneeboarding, etc. Fits a wide-array of inboard, V-drive, and I/O boats with mechanical throttle. The High Speed Wind Tunnel is a blowdown-to-atmosphere, transonic-supersonic, adjustable-Mach-number facility. The general arrangement of the facility is shown in an aerial photograph in Figure A schematic drawing indicating wind tunnel circuit layout is provided as Figure Figure High Speed Wind Tunnel General ArrangementFile Size: 1MB.

Motor speed controls help control or regulate motor speed in a variety of applications such as fans, blowers, pumps, vibratory feeders, conveyors, and lighting and heating. AC speed controls are available for universal, shaded pole, and PSC 1-phase motors.   How to Auto-Control Your PC’s Fans for Cool, Quiet Operation Whitson Gordon @WhitsonGordon Updated July 3, , pm EDT A good set of fans can keep your computer from overheating, but they can also make your computer sound like a wind tunnel.

Introduction: Controlling Motor Speed To control a large motor's speed, you need a motor controller. There are a range of motor controllers available on the market to deal with motors up to about 50A, but there are only a small handful capable of dealing with very high current electric motors (over 50A). Get the best deals on HP Machinery Speed Controls when you shop the largest online selection at Free shipping on many items 1/2 HP Electronic Variable Speed Drive Motor & Control System RPM New. $ Brand: Unbranded. Free shipping 3/4 HP Variable Speed Drive Kit Motor Control Pulleys Belt RPM New. $


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Improved speed control system for an 87,000 hp wind tunnel drive Download PDF EPUB FB2

Improved speed control system for HP wind tunnel drive. Improved Speed Control System for an 87, HP. fed by a 3-level inverter with improved low-speed torque and speed control.

Improved speed control system for HP wind tunnel drive - NASA/ADS This paper describes the design, installation, and integrated systems tests for a new drive motor speed control system which was part of a recent rehab project for the NASA Lewis 8x6 Supersonic Wind Tunnel.

AIREX: Improved Speed Control System for HP Wind Tunnel Drive This paper describes the design, installation, and integrated systems tests for a new drive motor speed control system which was part of a recent rehab project for the NASA Lewis 8x6 Supersonic Wind Tunnel.

This paper describes the design, installation, and integrated systems tests for a new drive motor speed control system which was part of a recent rehab project for the NASA Lewis 8x6 Supersonic Wind Tunnel. The tunnel drive consists of three mechanically-coup HP wound rotor induction motors driving an axial flow compressor.

Notebook PCs with Intel and AMD mobile processors use processor throttling to control the speed of the processor. Your processor may slow down due to user-defined “Power options," whether the unit is running on alternating current (AC) or direct current (DC), and the demand of any system processes and applications that are running.

Ac V W Knob Motor Speed Controller Dc V Variable Adjust Lathe Control $ DC Speed Control ~.5 HP / 1 HP, 90/ V DC Output, / VAC Input.

Wind tunnels are designed for a specific purpose and speed range. There is a wide variety of wind tunnel types and model instrumentation.

The tunnel shown in the figure is a low-speed, closed tunnel which we are viewing from above. We can use this figure to study the various parts of a wind tunnel.

Timothy J. Bencic. NASA Optics and Improved speed control system for HP wind tunnel drive. poster vectored thrust concept with flow visualization in the NASA Lewis 9- x 3 hp Motor TEFC RPM 56 Frame 5/8″ shaft.

3 HP VFD NEMA-4X /IP washdown and watertight enclosure. Used on our KMG grinders. Runs on V. Includes: Motor, VFD, on/off switch module, VFD bracket, electrical cord, and hardware. Click Here for set-up Instructions (pdf).

A new generation of "HP-IB, Programmable" instruments began to grow in every HP's product lines. In the spectrum analyzer category, the A, shown below was the first.

It was a 10 Hz to 13 MHz Tracking Spectrum Analyzer using an external programmable Synthesizer as. The most efficient and inexpensive method for controlling the speed of an AC motor is a frequency drive inverter. Besides helping you conserve electric power, the inverter offers precise speed control.

Whether your motor is single phase or three phase, you can find an economical means for speed control. The wind tunnel is driven by a kW ( HP), 69 m^3/s (, cfm) centrifugal fan [Show full abstract] controlled by a variable frequency drive. Airflow enters the wind tunnel through a.

– Relative wind speed at the rotor increases. – Control system pitches blades to feather. – Rotor thrust decreases. – Platform motion is exacerbated. • Control system introduces a negative damping term: large motions and loads result.

* Namik et al., “Periodic State Space Control of Floating Wind File Size: KB. Get this from a library. Improved speed control system for an 87, hp wind tunnel drive. [Edward A Becks; Timothy J Bencic; Philip Z Blumenthal; United States.

corpus id: aiaa drive system enhancements in the nasa lewis research center supersonic wind tunnels @inproceedings{edwardaiaads, title={aiaa drive system enhancements in the nasa lewis research center supersonic wind tunnels}, author={edward and a.} }.

Design and Evaluation of a Low-Speed Wind-Tunnel with Expanding Corners by Bj orn Lindgren & Arne V. Johansson Department of Mechanics needed to drive the wind-tunnel is high because of the loss of energy in the out- Design and evaluation of a wind-tunnel with expanding corners 5 L(m) H q0 0 5 10 15 20 25 30 35 0 File Size: KB.

Best Sellers in Motor Speed Controllers #1. Foredom -TXR 1/3 hp TX motor and TXR speed control out of 5 stars $ # Balboa Spa Controller Kit, VSZ, Z IP65 DC Drive Regen Reversing • Rating: 1 HP, 11 Amps @ • 2 HP, 11 Amps @ VAC.

Adjustable AC speed controls from Grainger can operate on 60/50 Hz at plus or minus 10% rated line voltage. Units help operate universal, shaded pole, and PSC 1-phase AC motors used to run fans, blowers, pumps, vibratory feeders, and heating and lighting applications.

shared its control system with another tunnel. n Speed 4 New MW (,HP) synchronous motor used to operate the NTF wind tunnel 5 ADJUST ABLE SPEED DRIVE. ABB Review 6/ 17 load commutated inverter (LCI). In the ASD system configuration that was chosen, an.

Wind Turbine Control 1 1 Wind Turbine Control The control system on a wind turbine is designed to: the highest e ciency of operation that maximizes the coe cient of power, C p, safe operation under all wind conditions.

Wind turbine control systems are typically divided into three functional elements. Wind tunnels are designed for a specific purpose and speed range and there is a wide variety of wind tunnel types and model instrumentation. The tunnel shown in the figure is a low-speed, closed tunnel which we are viewing from above.

The air inside the tunnel is made to move by the fan on the far side of the tunnel.KB Electronics Solid State Variable Speed AC Electric Motor Control, Max amp, V, # KFig. 9 Block Diagram of AC Speed Control Motor System.

Fig. 10 Waveform for Each Block. Fig. 10 shows the waveforms of each block. The speed set value d and the detected voltage e of the speed generated by a tacho-generator is compared in the comparison amplifier the level of the voltage signal a is determined.

The voltage signal a is low when the speed detected value to the speed.