FlightGlobal.com
Home
Premium
Archive
Video
Images
Forum
Atlas
Blogs
Jobs
Shop
RSS
Email Newsletters
You are in:
Home
Aviation History
1948
1948 - 0173.PDF
February atk. 1948 149 of a battery of flight instruments. This system will be used during the first flights when the functioning of the controls is studied. A pressure-measuring system consisting of an automatically recording manometer will measure air pressure at 400 points on the wing and tail surfaces, and control forces and structural stresses will be measured by 904 electric strain gauges, and automatically recorded by an oscillograph. A typical test run during the research flights will be to take off, using the tui bo-jet only, climb to about 25,000ft, start the rocket motors, make a high-speed run of about two minutes duration, and return to base (Muroc Dry Lake) with the turbo-jet. The whole operation will take only about half an hour, during which time i| tons of rocket fuel will be burnt. Mr. Heinemann gives an interesting note concerning colour. The Skyrocket, like the Skystreak, was originally to have been painted red—the standard colour for identifying American experimental aircraft. At the request of the N.A.C.A., however, the colour was changed to white which is more readily visible. This may well, however, lead to confusion because of its similarity to the light shade of grey used on Army jet fighters. At the time of writing, the Skyrocket has not flown, bat tests of the Skystreak con- tinue at Muroc, where further experiments with the Bell XS-i are also in hand. Unlike the two Douglas machines, which are sponsored by the U.S. Navy, the Bell is an Army project. There is still no confirmation of the rumour suggesting that this type has exceeded the speed of sound. PRESSURE AND STRESS MEASUREMENT AUTOMATIC RECORDING EQUIPMENT STRAIN GAUGES COMPLETE INSTALLATION CONTAINS OVER 4 MILES OF STRAIN GAUGE WIRING TUBING DISCONNECT MANIFOLD (400 LINES) OVER 3 MILES OF PRESSURE TUBING PICK-UP POINTS The Skystreak instrumentation diagram above shows the stress-measuring strain gauges and pressure-measuring orifices. Below is a chart to show the speed and height range in which aerodynamic conditions are known, the range now being investigated by the Skystreak and other aircraft, and that to be investigated by the Skyrocket. St* LEVEL •5 -6 -7 MACH NUMBER 1-2 KNOTS £- M.P.H.1- FT/SEC^ 100 200 400 500 600 700 BOO 100 200 300 400 500 600 700 BOO 900 100 200 300 400 500 600 700 AIRPLANE SPEED 600 900 ipoo 1,10c 1.200 L500
Sign up to
Flight Digital Magazine
Flight Print Magazine
Airline Business Magazine
E-newsletters
RSS
Events
