Download or read book Preliminary Analysis of Wind Tunnel Test of a 1 2 Scale Model of an Ejecting Crewman and Ejection Seat written by Alastair Anthony and published by . This book was released on 1979 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doubts were raised as to the integrity of the rest of the structure when the neck member of a model crewman failed during tunnel measurements of the limb forces during ejection. The accuracy of the load estimates used in the pretest stress analysis clearly needed to be checked. Meanwhile, testing was resumed at restricted pressure values with a non-load-measuring replacement for the neck member. From a sampling of the test data, the distribution of bending and torsional moments along the limbs is clearly revealed and, with its variation with attitude and Mach number, presents no great surprises. Values critical to the stress analysis confirm the estimated values. The neck pillar, designed by a subcontractor, had been designed for sensitivity in bending under the head loads without catering for torsion in the member if these load should in the event be appreciably offset from its axis. Although there is little confirmation of the magnitude of the head loads, there is some indication the offsets in excess of one inch in these loads are to be expected in the real situation, and that the resulting torsion was the cause of the failure. (Author).

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1980 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind Tunnel Measurements of Total Force and Extremity Flail Potential Forces on a Crew Member in Close Proximity to a Cockpit written by Harold L. Newhouse and published by . This book was released on 1980 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to determine the aerodynamic forces acting upon a crew member/escape seat combination at transonic speeds, and the flail potential forces acting on the crewmember's extremities, an existing half scale man/seat combination was integrated with a model of the forward portion of the F-16. The combination was tested in the Arnold Engineering Development Center Propulsion Wind Tunnel (PWT) Facility Transonic Wind Tunnel (16T) during the period September 9 to September 15, 1978, over the Mach number range 0.4 to 1.2. The basic data obtained in this way are reported in Reichenau. The present report describes the experimental set-up in detail and presents some typical force and force area (force/sq. q) plots. From earlier work it was determined that the flow over the model was 'supercritical', implying a turbulent boundary layer at separation, and a reasonably realistic simulation of full-scale conditions. Very marked interference effects were observed on the man/seat combination, due to fuselage proximity. The most dramatic were large increases in upper arm and upper leg flail potential forces. In almost all cases, the most severe interference occurred when a 'flow diverter' was mounted in front of the cockpit. Comparisons with other sources of data revealed generally good agreement, except that the drag of the model was somewhat low; presumably due to the fact that the model was smoother than its full scale equivalent.

Download or read book SRIM Index written by and published by . This book was released on 1979 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1979 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind Tunnel Tests of a 0 65 Scale Ejection Seat with and Without Yaw Stabilizers written by Peter Ayoub and published by . This book was released on 1984 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aerospace Medicine and Biology written by and published by . This book was released on 1980 with total page 66 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).

Download or read book Government Reports Annual Index written by and published by . This book was released on 1979 with total page 954 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 Wind tunnel Tests of the 1 8 scale Powered Model of the Curtiss XBTC 2 Airplane written by Joseph Weil and published by . This book was released on 1944 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of wind-tunnel tests was made in the LMAL 7- by 10-foot tunnel of the Curtiss XBTC-2 model (1/8-scale) with power to determine and improve, as necessary, the complete aerodynamic characteristics of the model.

Download or read book Wind tunnel Tests of the 1 8 scale Powered Model of the Curtiss XBTC 2 Airplane written by Arthur R. Wallace and published by . This book was released on 1944 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lateral stability tests of the original 1/8-scale model of the Curtiss XBTC-2 airplane were made in the LMAL 7- by 10-foot tunnel. It was found that (1) a rudder-force reversal was evident; and (2) that a large reduction in effective dihedral was shown when flaps were lowered and take-off power applied. In an attempt to remove the rudder-force reversal, various dorsal fins and a modified vertical tail were tested. In an attempt to reduce the change in effective dihedral with flap deflection and power, the following modifications were tested: the outboard flaps skewed from their original position (effectively swept back), wing tips which could be made to turn up when the flaps were lowered, and three modifications to the wing plan form.

Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1979 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preliminary Experiments on the Simulation of Gusts in a Wind Tunnel written by Arnold Martin Kuethe and published by . This book was released on 1955 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind tunnel Tests of a 2 engine Airplane Model as a Preliminary Study of Flight Conditions Arising on the Failure of One Engine written by Edwin P. Hartman and published by . This book was released on 1940 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind Tunnel Tests of Rectangular Finned Variable Gap Tangent Ogive cylinder Model at Mach Numbers 1 75 to 4 50 written by Neil Arthur Zarin and published by . This book was released on 1964 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Construction and Preliminary Testing of a Scale Model Subsonic Wind Tunnel written by Richard G. Stutz and published by . This book was released on 1951 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind tunnel Tests of a 1 5 Scale Model of the Cessna Model 310 written by Virgil L. Razak and published by . This book was released on 1952 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: