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The eet horizontal tails investigation and the eet lateral controls investigation. [langley 8-foot transonic pressure tunnel
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Bartlett, D. W. Jacobs, P. F. |
| Copyright Year | 1981 |
| Description | In the energy efficient transport (EET) Horizontal Tails Investigation, aerodynamic data were measured for five different horizontal tails on a full span model with a wide body fuselage. Three of the horizontal tails were low tail configurations and two were T tail configurations. All tails were tested in conjunction with two wings, a current wide body wing and a high aspect ratio supercritical wing. Local downwash angles and dynamic pressures in the vicinity of the tails were measured using a yaw head rake. The results provide a comparison of the aerodynamic characteristics of the two wing configurations at trimmed conditions for Mach numbers between 0.60 and 0.90. In the EET Lateral Controls Investigation, the control effectiveness of a conventional set of lateral controls was measured over a Mach number range from 0.60 to 0.90 on a high aspect ratio supercritical wing semispan model. The conventional controls included a high speed aileron, a low speed aileron, and six spoiler segments. The wing was designed so that the last 25% of the chord is removable to facilitate testing of various control systems. The current status and an indication of the data obtained in these investigations are presented. |
| File Size | 597434 |
| Page Count | 11 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810010483 |
| Archival Resource Key | ark:/13960/t2j728d3m |
| Language | English |
| Publisher Date | 1981-02-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Stability And Control High Aspect Ratio Body-wing Configurations Transport Aircraft Ailerons Aircraft Design Spoilers Aerodynamic Configurations Horizontal Tail Surfaces Wind Tunnel Tests Supercritical Wings Active Control Aerodynamic Characteristics Lateral Control Mach Number Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
