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Thursday, February 13, 2020 | History

3 edition of Summary of drive-train component technology in helicopters found in the catalog.

Summary of drive-train component technology in helicopters

Summary of drive-train component technology in helicopters

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Published by National Aeronautics and Space Administration in [Washington, D.C.? .
Written in English

    Subjects:
  • Military helicopters,
  • Gearing

  • Edition Notes

    StatementGilbert J. Weden and John J. Coy ; prepared for the NATO-AGARD PEP Sixty-fourth Symposium on Gears and Power Transmissions for Helicopters and Turboprops, Lisbon, Portugal, October 8-12, 1984
    SeriesNASA technical memorandum -- 83726, USAAVSCOM technical report -- 84-C-10, AVSCOM technical report -- 84-C-10
    ContributionsCoy, John J, United States. National Aeronautics and Space Administration
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL14925982M

    Concept 1—inline tow speed planetary The system consists of a planetary gear, an overrunning clutch and a standard clutch. Former competitors[ edit ] AVX AVX Aircraft proposed an aircraft with their coaxial rotor and twin ducted fan design that provides better steering and some additional forward power. Charles Curtis US develops a different design and sells the patent to E. Data by Lord [8] for a single gear show a decrease in WPL with increased radial shroud clearance 0.

    Learn how to use NPV to determine the financial merits of your deals. Griffith develops vital theories regarding gas flow past airfoils vs the previous method of using passages. Constants were then calculated for use in compensating for the individual cell zero offset and gain. The intention was to deploy the sensor from a low-orbit satellite and use it as an accurate attitude control sensor, an orbital altimeter, or a navigation aid in a variety of satellite applications. Neither I nor my dorm mates are spammers, nor do we have any interest in the company that appears to be the only one making a contra-rotating gearbox for Rotax engines. It is listed here because it is in use in the ultralight community.

    Uses of a gas turbine with shaft: The shaft can be connected to other machinery to do various types of work such as: turning a helicopter rotor, running a compressor which "crushes" a gas to a condensed form for use in industrial applications or generating electric power. In those that do, contra-rotating is taken as specifically implying coaxial and excluding the otherwise counter-rotating. For example, the authority of a rotation control vane 11 is reduced when its corresponding gate is raised. Being a defence subcontractor for the United States Government, the Lockheed Martin Corporation mainly focused on the defence applications of gravity gradiometry. Hill, M. As shown in this figure, circular airplane 1 comprises an oblately spheroidal body 2 whose major diameter is in the horizontal plane.


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Summary of drive-train component technology in helicopters book

Findings by the authors [14] as well as others [3, 8] indicate that WPL is dependent, in part, on oil flow and temperature. You're entitled to your views on what the words should mean but that's "advocacy," not "information. Namely, that it's ok to call the same thing by different names.

For the unshrouded case, this difference was approximately 7x. The shrouds are placed within a clam-shell housing, Figure 3. The gear on the input shaft, former sun gear, meshes with the ring gear part of the offset compound gear.

I've thrown in a couple from the popular media since you seem to object to technical references. Therefore, there is relative movement between the sun gear 22 and the planet carrier.

In the former, the payload consists of a pilot, sensors, computers and communications equipment. Jet engine development is another topic best discussed in a separate page. We can stipulate to "contrarotating," and "counterrotating" as an equivalent is well represented in the literature as well to include technical dictionaries.

During this period Roy Schultz and Colonel Don Kern, who were in England investigating the Whittle jet engine, had made arrangements to send a sample Whittle engine to the supercharger group. The locomotive engine design was restarted in mid and tested in Bldg.

If the NPV is greater than zero, the investment return has exceeded the discount rate. Data was recorded at 3 Hz capture rate. The system is shown in Fig. The generation of lift by pressure for the invention may be described as follows. It'd be great if you could put some cited info in.

Computer codes developed by applicants to predict lift for the aircraft, incorporating empirical values derived from actual experiments, indicate that the lift of this airplane will be in excess of 4 lbs. His invention and some other ideas and inventions are summarised below.

This enables the test hardware i.

Gas Turbines

For example, the V transmission contains helical gear meshes rotating in excess of 20, ft. Download figure: Standard image High-resolution image Export PowerPoint slide This type of gravity gradiometer can also be called the resonant modulating gravity gradiometer RMGGsince its output signals are recorded as a result of their being demodulated at the carrier frequency.

Delgado, I. However, holding the radial clearance at 0.

The Effects of Shrouding on reducing Meshed Spur Gear Power Loss

To avoid this occurrence, a double planetary system is used.U.S. Civil Rotorcraft Accidents, Through Franklin D. Harris,1 Eugene F. Kasper2 and Laura E. Iseler3 dominated drive train component failures and led to approximately one-sixth of the airframe-related The U.S. military services were the first to demand that gas turbine technology be applied to their helicopters.

With this. heavy-lift rotorcraft platform for the US Marine Corps. The platform, designated as the CHK, is a ground-up re-design that incorporates the latest in helicopter technology, including new General Electric GEB 7,hp engines, fly-by-wire flight controls, and composite airframe structures.

Aug 09,  · The Story of FRES – A Summary. Sources.

BAE Systems

As one might imagine, this series has taken an enormous amount of research, taking into account many sources but I must give special mention to our Chris and Challenger2 from Plain Military, without their expansive knowledge and most helpful insight and support, this would have been much the poorer.

The March edition of The Helicopter Newspaper. Model AB and AW Helicopters SUMMARY: This document publishes in the Federal Register an. Future Vertical Lift (FVL) is a plan to develop a family of military helicopters for the United States Armed sylvaindez.com different sizes of aircraft are to be developed, sharing common hardware such as sensors, avionics, engines, and countermeasures.

The U.S. Army has been considering the program since FVL is meant to develop replacements for the Army's UH Black Hawk, AH Apache, CH Issued by: United States Department of Defense.

Drive Train (Turbine) Turbine Drive Train Work Aid Documents. Belt Tension and Pulley Alignment Checklist. Lower Pulley Alignment Work Aid and Checklist T Lower Pulley Hot Bearing Light Troubleshooting. Main Rotor Gear Box Flushing Procedures. .