| NASA/FAA Tailplane Icing Program: Flight Test Report Contributor(s): Nasa, National Aeronautics and Space Adm (Author) |
|
 |
ISBN: ISBN-13: 9798662715011 Publisher: Independently Published OUR PRICE: $26.99 Product Type: Paperback Published: June 2020 * Not available - Not in print at this time * |
| Additional Information |
| BISAC Categories: - Science | Space Science |
| Physical Information: 0.35" H x 8.5" W x 11.02" (0.88 lbs) 166 pages |
| Descriptions, Reviews, Etc. |
| Publisher Description: This report presents results from research flights that explored the characteristics of an ice-contaminated tailplane using various simulated ice shapes attached to the leading edge of the horizontal tailplane. A clean leading edge provided the baseline case, then three ice shapes were flown in order of increasing severity. Flight tests included both steady state and dynamic maneuvers. The steady state points were 1G wings level and steady heading sideslips. The primary dynamic maneuvers were pushovers to various G-levels; elevator doublets; and thrust transitions. These maneuvers were conducted for a full range of flap positions and aircraft angle of attack where possible. The analysis of this data set has clearly demonstrated the detrimental effects of ice contamination on aircraft stability and controllability. Paths to tailplane stall were revealed through parameter isolation and transition studies. These paths are (1) increasing ice shape severity, (2) increasing flap deflection, (3) high or low speeds, depending on whether the aircraft is in a steady state (high speed) or pushover maneuver (low speed), and (4) increasing thrust. The flight research effort was very comprehensive, but did not examine effects of tailplane design and location, or other aircraft geometry configuration effects. However, this effort provided the role of some of the parameters in promoting tailplane stall. The lessons learned will provide guidance to regulatory agencies, aircraft manufacturers, and operators on ice-contaminated tailplane stall in the effort to increase aviation safety and reduce the fatal accident rate. Ratvasky, Thomas P. and VanZante, Judith Foss and Sim, Alex Armstrong Flight Research Center; Glenn Research Center NASA/TP-2000-209908, NAS 1.60:209908, DOT/FAA/AR-99/85, E-12126 DTFA03-95-90001; RTOP 548-21-23 36586 AIRCRAFT ICING; HORIZONTAL TAIL SURFACES; AIRCRAFT STABILITY; LEADING EDGES; FLIGHT TESTS; AIRCRAFT SAFETY; CONTROLLABILITY; FLAPPING; WINGS; THRUST; FLIGHT HAZARDS; ICE PREVENTION |