Véronique Rocket Family - Spacecraft Propulsion - Liquid Fuel

Véronique Rocket Family

The Véronique rocket family represents the foundational chapter in France’s journey toward becoming a spacefaring nation. Developed in the late 1940s and operational through the 1950s and early 1960s, Véronique was France’s first indigenous liquid-fueled sounding rocket.

Designed and built by the Laboratoire de Recherches Balistiques et Aérodynamiques (LRBA), it was used for scientific research, high-altitude atmospheric measurements, and biological experiments. Though not designed for orbital missions, the Véronique series played a critical role in developing the technical expertise, infrastructure, and confidence needed for future French space successes.

Variants such as Véronique AGI and Véronique 61M demonstrated increasingly advanced capabilities. These rockets conducted dozens of flights, many from the Hammaguir launch site in Algeria, and helped validate propulsion, avionics, and recovery systems. Their data and lessons directly influenced the later Diamant orbital program, and thus Véronique stands as a cornerstone of French aerospace history.

Design and Construction

The Véronique rocket family evolved through multiple variants, each improving upon the last in propulsion, payload capacity, and altitude reach. All Véronique rockets were single-stage, liquid-fueled vehicles that burned a hypergolic combination of nitric acid (oxidizer) and turpentine (fuel), igniting spontaneously on contact. The earliest models, including the Véronique P (prototype), stood around 6.5 meters tall and featured aluminum alloy fuselages to maintain light weight while withstanding high-speed flight and thermal stress.

As the series advanced into the AGI, NA, and 61M variants, enhancements included enlarged fuel tanks, strengthened combustion chambers, and extended nozzles for higher efficiency. Some later models incorporated gimbaled thrust mechanisms and aerodynamic stabilizers, including fins and spin-stabilization systems, to improve flight trajectory and payload delivery precision. Each rocket had a modular payload section capable of carrying scientific instruments, telemetry transmitters, and biological payloads. Designing a reliable combustion system for the corrosive propellants was a major engineering challenge, requiring careful material selection and thermal regulation. Engineers also had to design insulation and pressurization systems to maintain fuel integrity in desert conditions.

The launch and fueling process involved extensive ground support equipment, including launch towers and mobile fueling systems. Despite being developed in an era of limited computing power and limited resources, the Véronique rockets proved to be technologically ahead of their time, offering France a valuable base from which to build its space ambitions.

Mission Objectives

The primary mission objective of the Véronique rocket family was to serve as a scientific research platform for suborbital flights reaching altitudes between 70 and 300 kilometers. These missions aimed to study the upper atmosphere, cosmic radiation, temperature and pressure profiles, and aerodynamic behavior at high altitudes. The rockets carried a variety of sensors and instruments to collect this data and transmit it back to Earth, or, in some cases, store it for recovery upon descent.

A crucial secondary objective was to test biological responses to near-space conditions. Beginning in the late 1950s, certain Véronique missions included biomedical payloads featuring rats and monkeys to examine the effects of acceleration, weightlessness, and radiation. These biological studies laid the foundation for human spaceflight research in France and Europe.

The Véronique series also had a technology demonstration role, helping France develop, test, and refine liquid propulsion, telemetry, staging separation, and recovery systems. Each successive launch served as a testbed for new designs, control mechanisms, and construction techniques. For the engineers at LRBA and CNES, the Véronique rockets were invaluable in establishing the standards and capabilities required for more ambitious orbital programs, particularly the Diamant rocket, which would follow a few years later.

Launch and Deployment

The Véronique rockets were launched primarily from the Hammaguir test range in Algerian Sahara, which offered ideal conditions for high-altitude suborbital launches. Some later launches were also conducted at Colomb-Béchar, another facility in Algeria, before France moved its operations to Kourou in French Guiana. The first full launch of a Véronique rocket occurred in 1952, marking the beginning of a series of progressively more sophisticated missions.

Each rocket was launched vertically from a specialized tower. Fuels were loaded manually or semi-automatically on the pad, requiring strict safety protocols due to the corrosive nature of the hypergolic propellants. Launch crews dealt with several early failures, including engine cutoffs and flight instability, but these issues led to rapid improvements in guidance and propulsion systems.

The AGI and NA variants demonstrated high reliability and reached their target altitudes, often between 80 and 130 km. The most advanced, Véronique 61M, reached above 300 km, approaching the Kármán line and providing valuable data for space-relevant biological experiments.

Key milestones included the first French high-altitude photos, the first successful biological flights, and significant improvements in telemetry and data transmission. Though the rockets were suborbital, many payloads were equipped with parachute recovery systems, although not all were successfully retrieved. These missions allowed France to accumulate both data and expertise essential for its entry into orbital spaceflight.

Technical Specifications (M-V)

  • Length: 6.5 to 11 meters (depending on variant)

  • Diameter: ~0.55 meters

  • Launch Mass: Between 1,500 kg and 2,400 kg

  • Payload Capacity: 60–100 kg (depending on variant)

  • Maximum Altitude: 80–315 km (AGI up to 100 km, 61M up to 315 km)

  • Propulsion: Single-stage, liquid-fueled; nitric acid (oxidizer) and turpentine (fuel)

  • Thrust: ~35–45 kN (depending on variant)

  • Stabilization: Fins, spin stabilization, or gimbaled thrust

  • Power Supply: Batteries for telemetry and instrumentation

  • Scientific Instruments: Thermometers, pressure sensors, Geiger counters, radiation detectors, and biological life-support modules

  • Recovery System: Parachute-based (for selected payloads)

  • Launch Site(s): Hammaguir and Colomb-Béchar (Algeria)

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