naca-rm-a7f09

Downloads1
File Size2.19 MB
Tags   Dive Recovery     Flaps     NACA     Research Memorandum  
Download
FileAction
naca-rm-a7f09 A Summary and Analysis of Data on Dive Recovery Flaps.pdfDownload 

National Advisory Committee for Aeronautics, Research Memorandum - A Summary and Analysis of Data on Dive Recovery Flaps

Considerable difficulty has been experienced with many
modern conventional airplanes in recovering from high—speed dives.
As a result, various corrective devices have been investigated,
the most successful of which has been the dive—recovery flap. This
device is a small split flap mounted on the lower surface of the
airplane wing. A typical installation on a wind—tunnel model is
shown in figure 1, and an experimental installation on an airplane
for flight tests is show: in figure 2.

Dive—recovery flaps were tested first in the Ames 16-foot high—
speed wind tunnel in October 191m, and were first tested in flight
by the Lockheed Aircraft Corporation from December 191+? to April 1911-3.
Subsequent flight tests were made by the Army Air Forces and the -
Republic Aviation Corporation with a Republic P—lI-T airplane and by
the Langley Memorial Aeronautical Laboratory with a North American
XP—fil airplane. Mere recently the Ames 16—foot high—speed wind
tunnel has tested dive—recovery flaps on a number of airplane models
in cenjunction with more general investigations.

It is the purpose of this report to collect all the available
data on the subject and present them in_a form which will serve as
a guide for the preliminary design of dive—recovery flaps. By
necessity, many factors pertaining largely to airplane configuration
have been ignored. Consequently, a flight—test procedure is recom—
mended. It is believed that the data presented herein, if used in
conjunction with the recommended flightrtest procedure, will facili-
tate the developement of satisfactory dive—recoveryeflap installatious
for most conventional airplanes.


Have A Comment On This Article? Post It Here.

Comments are moderated and will not be published until approved. Your email address will be kept confidential. Please review our Comment Policy before posting your comment.

*

Microsoft Excel Spreadsheets

FREE ANALYSIS SPREADSHEETS 3 Over the last 10 years we have developed hundreds of spreadsheet tools to help us with our structural analysis work. We have made these available through the Abbott Aerospace web site and the XL Viking project. We have now brought them into the technical library. They have been updated, improved and the collection has been expanded to cover more analysis methods than ever before.

The XL-Viking Add-In for Excel

XL-Viking 2 We created the XL-Viking Excel add-in to satisfy our own need to make Excel a better engineering tool. XL-Viking shows your Excel Formula in a way that makes sense and brings essential new functionality to Microsoft Excel by providing an additional user interface and easy to use functions.

The Indispensable Tool For Engineers, Mathematicians, Scientists, Accountants and Teaching Professionals!

download-xl-viking