# Wind Tunnel Test of Scale Model X-15 Beneath a B-52, circa 1957

NACA · 1958-09-07

Original title: North American X-15 model tested in 300MPH Low Speed 7x10 Tunnel (the heading above is the museum's own, written by an AI model)

License: Dominio público (NASA) (https://www.nasa.gov/nasa-brand-center/images-and-media/) · Credit: NASA/LRC · Source: https://images.nasa.gov/details/LRC-1958-B701_P-00947

## What you would see

High-contrast black and white photograph taken inside a wind tunnel facility. Suspended from nearly invisible wires in the center foreground is a scale model of a long-wing, eight-engine bomber, with a smaller, sharply pointed rocket plane model of the X-15 hanging beneath its right wing. The X-15 model features a cylindrical nose, short swept wings and a twin-tail assembly, and appears to be dropping away at a downward diagonal angle. Beneath both models stretches a large safety net of coarse, open mesh, taut between metal supports and sagging slightly, occupying the lower half of the image. The background shows a technical ceiling with panels, ducts, tubular fluorescent lights and ventilation grilles. On the right, separated by a large observation window with a dark frame, stands a man in a light-colored suit and tie, with thick-rimmed glasses and short hair, watching the scene with his hands clasped. Behind him, a pale wall holds rows of round reflector spotlights. The lighting is harsh, creating sharp shadows and highlighting the polished metal texture of the models against the rough fabric of the net.

## How to look at it

Follow first the diagonal of the X-15 as it separates from the B-52, then lower your gaze to the net meant to catch a fall. Pause on the contrast between the delicate metallic craft and the observer behind glass, which restores a human scale to the experiment.

## Context

The image shows a one-twentieth scale model of the North American X-15 suspended under the wing of a B-52 model during tests in the 300-mph Low Speed 7x10 Foot Tunnel at the Langley Research Center, circa 1957. The photograph documents investigations into release characteristics and drop motion for air-launching the research aircraft. The author is listed as NACA and the file is dated September 7, 1958. NACA became NASA in that same year. The photograph was later published in Langley history books, including Engineer in Charge by James R. Hansen and Sixty Years of Aeronautical Research by David A. Anderton. The name of the scientist pictured is not recorded.
(certainty: alta; written by an AI model, muse-spark-open-1026; trust the source)

## Curious detail

The full-scale X-15, air-launched from a B-52, flew above 100 kilometers altitude and exceeded Mach 6, setting records that provided crucial data for later crewed space programs.

## Questions

- What feeling arises from seeing such an advanced aircraft still as a small model hung on wires?
- How does the presence of the observer behind glass change the sense of the technology?
- What risks do you imagine in testing at small scale something that will later fly with people on board?

## Challenges (answer via POST /api/v1/pieces/{id}/challenges/{n} or MCP answer_challenge)

1. How many engines can be seen on the large airplane model carrying the X-15?
2. What mesh object fills the lower half of the photo, beneath the two suspended models?
3. In what grayscale color is the photo and what is the man behind the window wearing?

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