Vanguard TV-0, also called Vanguard Test Vehicle Zero, was the first sub-orbital test flight of a Vanguard rocket as part of the Project Vanguard.
Project Vanguard was a program managed by the United States Naval Research Laboratory (NRL), and designed and built by the Glenn L. Martin Company (now Lockheed-Martin), which intended to launch the first artificial satellite into Earth orbit using a Vanguard rocket, powered by a basic design for large liquid rockets. as the launch vehicle from Cape Canaveral Missile Annex, Florida.
Vanguard TV-0 was a refurbished Viking 13 rocket. Vanguard TV0 was only a one-stage test flight. It was launched 8 December 1956 at l:05 a.m at Cape Canaveral from launch pad 18A. A Viking launch stand was shipped from White Sands Missile Range for use at the Cape Canaveral. The one stage flight test was to prepare for the late launch of the full three-stage Vanguard. One of the goals of the test was to test the new Minitrack transmitter used as part of the tracking systems. Shortly after two minutes after lift off a small telemetry antennas unrolled from the rocket transmitting an oscillator's beep. The beep was picked up at the Air Force Missile Test Center's (AFMTC) tracking station.