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Sunday, October 4, 2020 | History

3 edition of Technology needs for high speed rotorcraft (3) found in the catalog.

Technology needs for high speed rotorcraft (3)

Technology needs for high speed rotorcraft (3)

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  • 12 Currently reading

Published by NASA Ames Research Center, National Technical Information Service, distributor in Moffett Field, Calif, [Springfield, Va.? .
Written in English

    Subjects:
  • Helicopters -- Design and construction.

  • Edition Notes

    StatementJack DeTore and Scott Conway.
    SeriesNASA contractor report -- 177592., NASA contractor report -- NASA CR-177592.
    ContributionsConway, Scott., Ames Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15372836M

    Such an X-wing aircraft could take off and land vertically, and in high-speed helicopter flight (about mph) the pilot can stop and lock the rotating wing, then accelerate to transsonic speeds for fixed-wing flight. For the homebuilder there are many more rotorcraft designs to consider, so . Predicted 4/rev vibratory hub load at high speed from 8 different rotor codes for LYNX D W AR N Flight Test t Vibratory Loads at High Speed: Prediction vs. Flight Data in • None of predictions agreed - 0 M AA SR SU SIN 4 COS 4 ΩΩΩΩt Ω Predicted cockpit vibration – knots with flight test data • No two.

    – Rapid Cost Efficient Rotorcraft Airbus Helicopters High Speed Demonstrator Updated as of June Key Features Racer is a high-speed helicopter demonstrator currently being developed by Airbus Helicopters as part of the Clean Sky 2 research programme. Advanced Rotorcraft Technology, Inc. ART specializes in the modeling and simulation of rotorcraft, helicopters, and other air vehicles. We provide simulation software, models, and consulting in support of air vehicle design, analysis, and training.

    General NASA must continue to provide the necessary resources for aerodynamics research and validation, including resources focused on specific key technologies, resources to maintain and enhance ground and flight test facilities, and resources for enhanced analytical and design capabilities.. Specific. The following research topics should serve as the focus of NASA's research effort in. The UHA slowed rotor wind-tunnel test data is a unique and high-quality database for the validation of rotorcraft analysis tools at high advance ratio flight conditions.


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Technology needs for high speed rotorcraft (3) Download PDF EPUB FB2

Technology Evaluation for Selected Concepts, and the Enabling Technology Plan. The overall goal of the study is to identify the technology requirements of high-speed rotorcraft (> KTAS) which maintain helicopter-like hover efficiencies.

To achieve the study goal, sizing the. Technology Needs for High Speed Rotorcraft (3) Jack DeTore and Scott Conway Bell Helicopter Textron, Inc. P.O. Box Ft. Worth, TX Prepared for Ames Research Center CONTRACT NAS October National Aeronautics and Space Administration Ames Research Center MoffettField, California File Size: 5MB.

Get this from a library. Technology needs for high speed rotorcraft (3): final report. [United States. National Aeronautics and Space Administration.;]. Get this from a library. Technology needs for high speed rotorcraft (2).

[Mark W Scott; Ames Research Center.]. Summary of Technology Needs For High Speed Rotorcraft Study Authors / Details: Mark W. Scott, Sikorsky Aircraft Division, United Technologies Corporation.

rotorcraft on civil air transportation, and future military requirements for long-range, efficient heavy-lift VTOL aircraft. This paper summarizes the results of these investigations, with emphasis on the performance of rotorcraft designed for heavy-lift and high-speed cruise.

The NASA Heavy Lift Rotorcraft Systems Investigation (Refs. Technology Needs for High-Speed Rotorcraft - Conceptual Designs and Performance Authors / Details: Joseph B. Wilkerson and John J. Schneider, Boeing Defense and Space Group, Helicopters Division. Technology needs for high-speed rotorcraft.

By John Rutherford, Marc Lovenguth, Matthew Orourke, Clark Mitchell and Christopher Martin. Abstract. A study to determine the technology development required for high-speed rotorcraft development was conducted. The study begins with an initial assessment of six concepts capable of flight at, or.

Selected design issues of some high-speed rotorcraft concepts. A comparative assessment of high-speed rotorcraft concepts (HSRC) - Reaction driven stopped rotor/wing and variable diameter tiltrotor. Advanced rotorcraft V/STOL - Technology needs for high-speed rotorcraft.

For rotorcraft, advance ratio (or Mu, symbol) is defined as the aircraft forward speed V divided by its relative blade tip speed.

Upper mu limit is a critical design factor for rotorcraft, and the optimum for traditional helicopters is around The "relative blade tip speed" u is the tip speed relative to the aircraft (not the airspeed of the tip).).

Thus the formula for Advance rati. American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA the aerodynamic performance capability of rotorcraft designed for heavy-lift and high-speed cruise (Refs.

1 to 6). The motivations for these investigations include the tremendous potential impact of an efficient, large rotorcraft on civil air transportation, and future military requirements for long-range, efficient heavy-lift VTOL aircraft. Review of Rotorcraft Technology & NASA Role Alfred Gessow Rotorcraft Center UNIVERSITY OF MARYLAND 50 kts High-Speed kts UTTAS / AAH Measured Vibration at pilot floor lbs •4 Critical flight Technology Needs.

Systems Technology is available for contract work and government sponsored work on rotorcraft flight control development, both manned and unmanned, model validation, piloted simulation, and flight test work.

Our past experience includes work with the UH, CH, XV, V, and many others. Download Systems Technology Publications. Rotorcraft Engineering. The University is engaged in a wide range of research and educational activities related to vertical flight technology.

Inled by faculty in the aerospace engineering department, a Penn State team was competitively awarded one of the three Rotorcraft Centers of Excellence (RCOE) by the newly formed National Rotorcraft Technology Center (NRTC). The Advanced Rotorcraft Transmission demonstrate the technologies needed for rotorcraft (ART) Program was initiated to advance the transmissions that will be 25 percent lighter and Technology Needs and Research Plan studied, and developed.

Two of these technologies High speed spring clutch (4) hr endurance test (4) High hot hardness. Rotorcraft Support, Inc. brings the most advanced technology from commercial and business aviation to the cockpit of your aircraft. Whether looking for upgrades, modifications or completions, RSI’s staff of experienced technicians will help you design an aircraft’s navigation and communication systems to meet your mission requirements.

There are also needs for high speed business rotorcraft which can fly long distance above the weather. The civil tiltrotor AW under development is believed to fill this niche. There are also needs for high speed VTOL commuters to carry alarge num ber of passengers.

But considering the. A few notable attempts at high speed rotorcraft include the Bell Modelthe Lockheed Cheyenne, the Fairey Rotodyne, the McDonnell XV-1, the Bell V and other Tilt Rotors, the Boeing-Vertolthe Boeing CRW, and the CarterCopter.

And I'm sure there have been other attempts that I didn't list. What is "slowed rotor/compound technology," you may ask. Basically, it's an aircraft where you put a rotor on the top (like a helicopter) for slow speed flight, and put wings on it for high speed flight. To help reduce drag in high speed flight, you slow the rotor down to an rpm much lower than where it operates at slow speed flight.

A study group of future rotorcraft is formed in JAXA with participants from a wide spectra of organizations in Japan. Taking the helicopter market in Japan as a study case, four potential high speed rotorcraft (VTOL aircraft) missions are discussed.

When a capability of hovering is required, compound helicopter is concluded as the most suitable design configuration. User Review - Flag as inappropriate Update to the aeromechanics classic, Helicopter Theory. Dr. Johnson is a pre-eminent expert in rotorcraft aeromechanics and the book provides excellent treatment of all of the information necessary to design and analyze rotors and propellers for both traditional rotorcraft and modern eVTOL and UAS systems.

Comprehensive collection of references 5/5(1).slots, Fig. 1. The unique rotorcraft challenge is to achieve the high lift of a slotted airfoil to delay stall on the helicopter rotor retreating blade without incurring a significant drag penalty at the low angles of attack of the advancing blade in high-speed forward flight.

Another high-lift airfoil approach is to introduce a.