Download or read book Analysis of Rotorwash Effects in Helicopter Mishaps written by Samuel W. Ferguson and published by . This book was released on 1991 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Rotorwash Effects in Helicopter Mishaps written by Samuel W. Ferguson and published by . This book was released on 1991 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selected number of rotorwash related helicopter mishaps have been reviewed and analyzed. This analysis attempts to determine threshold levels of rotorwash velocity that result in potential hazards. Due to a lack of detailed mishap information being available, critical threshold values of velocity could not be conclusively identified. However, critical ranges of combined rotorwash and ambient wind velocity were identified for several types of investigated mishaps. These ranges of peak velocity generally occur between approximately 30 and 40 knots. Recommendations are provided for improvement of the rotorwash mishap reporting system and for the acquisition of experimentally obtained data which will significantly aid any future rotorwash related mishap analysis efforts.

Download or read book Rotorwash Analysis Handbook Volume 2 Appendixes written by Samuel W. Ferguson and published by . This book was released on 1994 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Documentation, a program listing, and a user's guide are provided for version 2.1 of the FORTRAN 77-based ROTWASH computer program in report appendices. An extensive bibliography of rotorwash related technical documents is also provided. This listing is subdivided into different rotorwash topics. A companion report, entitled Evaluation of Rotorwash Characterisitics for Tiltrotor and Tiltwing Aircraft in Hovering Flight, DOT/FAA. RD-90/16, evaluates rotorwash characteristics of 11 different types of tiltrotor and tiltwing aircraft for comparison purposes. Another companion report, entitiled Analysis of Rotorwash Effects in Helicopter Mishaps, DOT/FAA/RD-90/17, presents an analysis of several of the more common types of rotorwash related helicopter mishaps. Much of the information provided in this second companion report is updated by this report. A third report, DOT/FAA/RD-90/25, Rotorwash Computer Model - User's Guide, is replaced by this more comprehensive report and its updated version of the ROTWASH computer program.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Method for Assessing the Impact of Wake Vortices of USAF Operations written by George Kurylowich and published by . This book was released on 1979 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experience as a consultant to the Safety Office at Norton AFB led to compiling the engineering tools presented so that this report can be used by engineering personnel to investigate future incidents/accidents and existing USAF operations that are impacted by the vortical wake hazard. The approach presented is amenable to easy hand computations. Mixed airplane/helicopter operations can be assessed, since the engineering tools to determine the location and strength of the rotor downwash field behind a helicopter are presented. Finally, a simplified mathematical model is given to represent this hazard for use in USAF simulators, to make pilots aware of the problems associated with operating in wake-contaminated airspace.

Download or read book Rotorwash Analysis Handbook Development and analysis written by Samuel W. Ferguson and published by . This book was released on 1994 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Special Investigation Report written by United States. National Transportation Safety Board and published by . This book was released on 1996 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Helicopter Downwash Blast Effects Study written by Grady W. Leese and published by . This book was released on 1964 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Investigation of the Effect of Downwash from a VTOL Aircraft and a Helicopter in the Ground Environment written by Thomas C. O'Bryan and published by . This book was released on 1961 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic-pressure measurement, in ground effect , have been obtained about a single-rotor helicopter and a dual-propeller VTOL aircraft. The results indicate that the slipstream dynamic pressure along the ground, some distance from the center of rotation, is not a function of disk loading but merely a function of the gross weight or thrust of the aircraft. Furthermore, for a given gross weight the thickness of this is out-ward flowing sheet of air is less for a small-diameter propeller (higher disk loading propeller).

Download or read book NASA SP written by and published by . This book was released on 1992 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Theoretical Study of Induced Effects Upon the Hovering Helicopter Rotor written by James D. Scoville (Jr.) and published by . This book was released on 1949 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.

Download or read book The Implications of Handling Qualities in Civil Helicopter Accidents Involving Hover and Low Speed Flight written by and published by . This book was released on 2005 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Basic Principles of Helicopter Crashworthiness written by Dennis F. Shanahan and published by . This book was released on 1993 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rotorwash Analysis Handbook Appendixes written by Samuel W. Ferguson and published by . This book was released on 1994 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book United States Army Aviation Digest written by and published by . This book was released on 1984 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aeronautical Engineering written by and published by . This book was released on 1992 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).