British Spaceflight History and the Launch of Prospero
On Oct. 28, 1971, the United Kingdom launched its first and last satellite on a domestically built carrier rocket. The spacecraft, named Prospero and also known as the X-3, lifted off from the Woomera Range Complex in Australia aboard a British Black Arrow rocket.
Before this mission, the first six British satellites launched from the United States on NASA rockets. The 66-kilogram Prospero flew in an elliptical orbit ranging between 522 km and 1,300 km above the Earth.
Development of the Black Arrow Carrier Rocket
Britain developed the Black Arrow as its national satellite launcher, basing the vehicle on the smaller Black Knight research rocket. The three-stage rocket stood nearly 13 meters tall, specifically 12.87 meters, as detailed by the sources.
The Black Arrow program ultimately experienced two failures and two successes before being canceled, making the Prospero flight the fourth and final mission of the rocket program.
Rocket Collision Damages Prospero Satellite Antenna During 1971 Flight
During the Oct. 28, 1971 flight, the rocket’s final stage bumped into the satellite after separation. The collision broke one of Prospero’s four radio antennas, though the spacecraft remained operational.
28 October 1971. 04.09.00 UTC/GMT. Launch of the Prospero (X-3) from Launch Area 5B (LA-5B), Woomera, South Australia on a British Black Arrow rocket. First satellite launched by Great Britain, to undertake a series of experiments studying the effects of the space environment.… pic.twitter.com/1KsXwrJ3aE
Designed to study how the space environment affects communications satellites, Prospero tested solar cells and telemetry systems, and included a micrometeoroid detector to evaluate hazards from small particles. Regular communications ended in 1973, but ground stations contacted the satellite at least once each year through 1996, the BBC reported.
Proposed Deorbit Mission by Skyrora
Prospero remains in low Earth orbit today. In 2021, Scotland-based space startup Skyrora announced plans to retrieve the defunct satellite and deorbit it in Earth’s atmosphere using a space tug launched on the company’s Skyrora XL rocket from Saxavord Spaceport in Scotland.
“By recovering Prospero, we are not only coming together as a space nation and taking responsibility for what we have launched into orbit, but also confirming our commitment to the sustainable use of outer space,” Volodymyr Levykin, Skyrora founder and CEO, stated at the time.
Frequently Asked Questions About the Prospero Satellite
What launch vehicle carried the Prospero satellite into orbit?
Prospero launched on a British-built, three-stage Black Arrow R-3 carrier rocket from the Woomera Range Complex in South Australia on Oct. 28, 1971.
Today in industrial history, 1971:Britain successfully launched the Prospero satellite into orbit aboard its Black Arrow rocket.It was Britain's first and only successful orbital launch using a domestically developed rocket.The British government had canceled the program… pic.twitter.com/T9thYPaoZZ
Why is the Prospero mission historically significant for the United Kingdom?
To this date, Prospero remains the first and last British satellite ever launched on a native rocket built in the United Kingdom, as all preceding British satellites used NASA rockets.
How did Skyrora plan to retrieve the defunct satellite?
Announced in 2021, Skyrora’s proposed retrieval operation involves using a company space tug to rendezvous with Prospero, latch onto the spacecraft, and pull it down into Earth’s atmosphere for a controlled burn-up.
#OTD 28 October 1971, UK launches #Prospero, Black Knight 1 satellite on Black Arrow rocket from #Woomera, Australia https://t.co/2lKLNJMr9E pic.twitter.com/Phvn6bn4ST
More on Prospero
28 October 1971. With the launch of the Prospero (X-3) from Launch Area 5B (LA-5B), Woomera, South Australia on a Black Arrow rocket, Britain became the first and only nation to have established, then abandoned, its own successful independent orbital launch capability. pic.twitter.com/6tFLnKqNWY
Britain cancelled Black Arrow in July 1971. It launched anyway on 28 Oct and put Prospero in orbit, where it still is. What other hardware outlived the programme that built it?Source: Science Museum Group, ESA. Photo: Andy Dingley (CC BY-SA 3.0) pic.twitter.com/C8GOuD3sCj
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