Scout F-1

Scout F-1

The Scout F-1 is an American orbital launch vehicle developed and operated by NASA's Langley Research Center, representing one of the later configurations in the long-running Scout rocket family. Manufactured by LTV Aerospace (later Vought Systems), the Scout series was the United States' primary small-satellite launcher for several decades, providing an affordable and reliable means of placing scientific payloads into low Earth orbit. The F-1 designation identifies a specific stage and configuration variant within the broader Scout lineage.

Design and Capability

Standing 25 meters tall with a diameter of 1.14 meters, the Scout F-1 is a slender, solid-fueled multistage rocket suited to lightweight scientific missions. Its payload capacity to low Earth orbit reaches 193 kilograms, placing it firmly in the small-lift category. Like all Scout variants, the F-1 relies entirely on solid propellant motors across its stages, a design choice that simplified operations, reduced costs, and enabled launches from relatively modest ground infrastructure. This made the Scout family particularly attractive for university experiments and NASA science programs that did not require the heavy-lift capability of larger vehicles.

Operational History

Based on this site's flight record, the Scout F-1 flew twice, both in 1975, recording one success and one failure or partial failure. This compact operational history reflects the vehicle's role as a specialized configuration tailored to particular mission requirements rather than a broadly produced workhorse variant.

NASA was the sole customer for the Scout F-1 in the tracked record, consistent with the Scout program's identity as a government science launcher. The two missions associated with this variant illustrate the range of scientific work the vehicle supported.

SAS 3 — the Small Astronomy Satellite 3, also known as *Explorer 53* — was a successful X-ray astronomy mission that continued NASA's program of observing cosmic X-ray sources from orbit. Launched from the San Marco platform off the coast of Kenya, it contributed meaningfully to the growing field of high-energy astrophysics during the mid-1970s.

DAD-A & B (Damping of Aerodynamic Oscillations) was a mission involving two small payloads intended to study spacecraft attitude dynamics. This flight is recorded in our data as a failure or partial success, indicating the mission did not fully achieve its objectives.

Place in the Scout Family

The Scout program as a whole spanned from 1960 to 1994, making it one of the longest-serving launch vehicle families in American spaceflight history. Over that period, numerous configuration variants were developed and flown, each designated by a letter-number combination reflecting evolving motor technology and payload requirements. The F-1 represents a mid-to-late phase of that evolution, flying during a period when the Scout was a mature and well-understood system. Despite its limited flight count, the Scout F-1 contributed to the broader scientific legacy of a program that launched well over 100 missions across more than three decades, supporting researchers from the United States and numerous partner nations worldwide.