Twin jet exhausts are inclined toward the ground to simulate takeoff conditions for certain engine installations and to identify options…
The historical evolution of airfoil sections from 1908-1944. The last two shapes are low-drag sections designed to have laminar (uninterrupted)…
Amelia Earhart (front row, center) on the steps of Langley Research Building in 1928 before a tour. Legend has it…
A semispan airplane model and flow-direction vane mounted on the wing of a P-51D airplane for transonic tests by wing-flow…
Among the famous visitors to NACA facilities: Fred E. Weick, head of the Propeller Research Tunnel section from 1925-1929, in…
Many of Langley Laboratory's early experiments focused on ways to reduce aircraft drag. One method was to place a cowling…
The NACA's seal.
This analog computing machine-a very early version of the modern computer-was located in the Fuel Systems Building at the Lewis…
A flight test of a P-61 aircraft using a ramjet engine, which was used to propel missiles.
A television camera is focused by a NACA technician on a ramjet engine model through the schlieren optical windows of…
