Programa Rawra
| Programa Rawra | |
| Type | Beamed-energy launch program |
|---|---|
| Status | Proposed (feasibility study) |
| Location |
 Nouvelle Alexandrie |
| Start Date | 1759 AN (Phase I feasibility study) |
| Cost | NAX€80 million (Phase I feasibility appropriation, 1759 AN to 1762 AN) |
| Participants | |
| Objective | Establish whether a launch vehicle heated from the ground by laser, rather than carrying the energy of its ascent aboard, can reach space at lower cost and with more of its mass given to payload. |
Programa Rawra is a proposed space-access program of the Aeronautics and Space Administration of Nouvelle Alexandrie (ASANA), the civil space agency of the Federation of Nouvelle Alexandrie. Its name is the Wechua word for a blaze, and its subject is laser-thermal launch, a form of beamed-energy launch in which a ground laser heats a launch vehicle's propellant from below rather than the vehicle carrying the energy of its ascent aboard. The program is a feasibility study rather than a flight project, opened in 1759 AN to establish whether a scheme the Federation had already sketched as one track of its directed-energy work can be carried toward a demonstrator.
The idea inverts the arrangement of a chemical rocket, which carries both its propellant and the chemical energy that heats it. In laser-thermal launch the energy stays on the ground, in a high-power laser that heats the vehicle's propellant as it climbs, so the vehicle carries only the propellant and can give more of its mass to payload. Rawra does not build that laser from nothing: it takes up the beamed-energy launch track of Projet Faisceau, the Federation's directed-energy program, which had proposed the method and set aside a site for it beside the San Diego de los Baños Cosmodrome but had built no demonstrator. The program is kept distinct from the separate laser-electric propulsion studied under Programa K'anchay, which converts a beam to electricity to drive a thruster in space; Rawra heats a propellant to launch from the ground, and the two share only the laser. No vehicle has flown under the program, which its planners present as a study of whether a launch that draws its heat from the ground can be made cheaper than one that carries its own.
Background
Programa Rawra belongs to the technology-diversification effort that reshaped New Alexandrian strategy after the Institute for Strategic Studies study The Alexandrium Horizon (1751 AN), which warned that refined Alexandrium would grow scarce and costly as the material neared its production peak. The Recession of 1757 and the market crash that came with it sharpened the warning, and the governing Federal Humanist Party carried a diversification agenda into the 1759 general election, favoring capabilities that turn on electrical power and precision optics rather than on a scarce alloy. That agenda produced a family of programs, among them Projet Faisceau in directed energy, Projet Prisme in photonics, Programa Wichay in space access, and Solar Orbital Power in space-based generation.
The cost of reaching orbit held a particular place in that effort. The Federation ran two national spaceports and a growing set of programs that depended on them, and planners treated the price of a launch as a standing limit on how freely those programs could fly. Two answers emerged from the diversification agenda, each attacking that price from a different direction. Programa Wichay proposed a momentum-exchange tether that would fling a vehicle from the edge of space without the vehicle burning its own fuel to get there; Rawra proposed to leave the energy of the climb on the ground and beam it up. The two were framed as complementary bets rather than rivals, since a tether assists a vehicle already high and fast while a ground laser could serve the first minutes of an ascent, and both were meant to lower the cost of launch without drawing on the strategic material. Rawra drew its specific promise from the directed-energy work the Federation was funding regardless: the same high-power lasers built to defend against missiles or to beam power between stations could, in principle, heat a rocket's propellant, so that a launch capability might be had as a further use of an industry already sustained.
Organization and governance
Programa Rawra is led by ASANA, the civil space agency under the Department of Research and Development, which runs the feasibility study and holds the launch concept. The Nouvelle Alexandrie Aerospace Development Directorate is the technical agent for the vehicle and its heat exchanger, and Javelin Industries is the prime contractor, holding the vehicle work and the Javelin Testing Range and Laboratory in Alduria where a demonstrator would fly. The study is directed by Dr. Puma Illatarco, an ASANA launch-systems engineer who came to the program from the beamed-energy launch work of Projet Faisceau, and who represents Rawra to the agencies that fund and coordinate the wider diversification effort.
The program depends on Faisceau for the part it does not build itself. Faisceau supplies the ground laser and the beam control that would heat a climbing vehicle and hold the beam on it, the same emitters the directed-energy program develops for its other tracks, so that Rawra's task is to design a vehicle and a launch that a beam of that kind could serve. The work is coordinated through the National Research and Development Corporation, the customary bridge between government research money and industry, which aligns the program with Faisceau so that the vehicle Rawra designs matches the beam Faisceau intends to build. Funding for the study is drawn from the advanced-sciences strand of the Aldurian Economic Diversification and Recovery Act, 1755, the same strand that underwrites Faisceau's own beamed-energy work, with a matching contribution from the Aldurian Development Corporation to carry any resulting hardware toward industry. The Phase I appropriation is NAX€80 million across 1759 AN to 1762 AN. The program takes no money from defense appropriations and is not tied to the Economic Emergency and Recovery Act, 1758; it is presented throughout as a civil space effort, even as it shares a laser and a range with the Federation's directed-energy work.
Concept and design
A laser-thermal launch system is conceived in three parts: a high-power laser on the ground that generates and aims the energy, a launch vehicle that carries propellant and a chamber in which the beam heats it, and a site where the two can work together within sight of each other. The premise of the scheme is that a chemical rocket spends most of its mass on the fuel and oxidizer it burns to heat its exhaust, so a vehicle that is heated from outside can leave the oxidizer and much of the energy behind and give the mass it saves to payload. The difficulty is that the beam must reach the vehicle through the atmosphere and hold on it as it climbs, so the method serves a vehicle only while it remains within sight of the ground laser, and its reach is set by the power and the aim of a laser the program does not itself build.
Ground laser and beam control
The energy of the launch comes from a ground laser, and here Rawra takes up the work of Projet Faisceau rather than beginning its own. Faisceau's beamed-energy launch track had already proposed to heat a launch vehicle's propellant from below with the high-power emitters and beam control the program builds for its air-defense and power-beaming work, and Rawra adopts that proposal as the transmitting half of its scheme. The beam control, the optics and steering that acquire a rising vehicle and hold the beam on its heat exchanger as it accelerates, is the harder demand, since a launch vehicle moves faster and climbs higher than the fixed and slow-moving targets Faisceau's other tracks address. The program treats the laser and its control as a Faisceau responsibility and its own task as the design of a vehicle and a flight that such a beam could serve.
Launch vehicle
The vehicle is where Rawra does its own engineering. In place of a combustion chamber it carries a heat exchanger, a chamber in which the ground laser's beam heats an inert propellant, most often hydrogen, to a high temperature before it is expelled through a nozzle. Because the propellant is heated rather than burned, it can reach a higher exhaust velocity than a chemical reaction allows, and a higher exhaust velocity is what lets a vehicle carry less propellant for a given climb. The engineering difficulty is concentrated in the heat exchanger, which must absorb a concentrated beam and pass its heat to the propellant without melting, and in the window or aperture through which the beam enters, which faces the same intense light. The Nouvelle Alexandrie Aerospace Development Directorate carries the vehicle and structural work, and ESB Thermodynamics, the thermal-management prime shared across the diversification programs, is charged with the heat exchanger and the cooling that a beam-heated engine demands.
Site and operations
Laser-thermal launch ties a vehicle to the ground laser that heats it, and so to a fixed site. The program is planned around the Javelin Testing Range and Laboratory in Alduria, beside the San Diego de los Baños Cosmodrome, where a working military spaceport already stands next to the high-power laser range a demonstrator would need, and where the Federation's directed-energy lineage has been proven since the Basilisk trials of the early 1700 ANs. Both lie within the CCI defense complex in the restricted Dasht-e Kavir Basin, whose closed airspace and shared range-safety infrastructure already provide the exclusions a launch-grade beam would demand. Because the beam serves a vehicle only while it is in view of the laser, the method is suited to the first minutes of an ascent rather than to the whole flight to orbit; planners describe it as a way to boost a small vehicle through the lower atmosphere, after which the vehicle would continue under its own power or a further stage. That limit ties the scheme to a single well-instrumented range and to the small, responsive launches such a range is built to serve, a role the neighboring cosmodrome already fills for the Federal Space Force from its LC-3 pad, rather than to the heavy lift the civil spaceport at Delgado Space Flight Center carries.
Industrial base
The program's supply chain draws on the directed-energy and aerospace base the Federation assembled for its diversification programs. Projet Faisceau provides the ground laser and the beam control on which any launch depends, the largest single contribution and the one Rawra does not attempt to duplicate. Javelin Industries is the prime for the vehicle and holds the Javelin Testing Range where the beam and the vehicle would meet, drawing on the launch and range work it already does for the San Diego de los Baños Cosmodrome. ESB Thermodynamics contributes the heat exchanger and the high-temperature cooling that a beam-heated engine requires, extending the thermal-management work it supplies across the diversification effort. Vehicle structures and the deployable and mechanical work fall to the Nouvelle Alexandrie Aerospace Development Directorate, and fundamental optics and propulsion research is carried out at the Royal University of Parap. Program planners present this shared base as the argument for the effort: the laser, the range, and the thermal engineering each extend work the Federation is already funding, so that Rawra adds a launch capability to an industry it is already sustaining rather than standing up a new one.
That shared base is what most closely ties Rawra to its sibling programs. Programa K'anchay draws on the same Faisceau lasers to power a spacecraft's electric thruster, where Rawra uses them to heat a launch vehicle's propellant, so that the two programs are the space and the ground uses of a single beam. Programa Wichay attacks the same cost of launch from the other end, flinging a vehicle from orbit with a momentum-exchange tether rather than boosting it from the ground, and the two are presented together as the diversification effort's two bets on cheaper access to space. Rawra is the newest and least proven of them, and the one most plainly dependent on a laser that has not yet been built.
Technical limitations
The program is candid that laser-thermal launch is the least mature of the diversification effort's space ideas and that its case turns on obstacles none of the sister programs has yet cleared. The first is the laser itself: no ground laser of the power a launch would demand yet exists, so Rawra cannot fly until Faisceau's beam-control and emitter work matures, and its schedule is bound to a program it does not control. The second is reach: because the beam serves a vehicle only while it is in view of the ground laser, the method can boost the first minutes of an ascent but cannot carry a vehicle to orbit on its own, so any launch would need a further stage and the scheme is confined to the airspace around a single range. The third is the atmosphere, which scatters and absorbs part of the beam and is disturbed by the vehicle's own exhaust, so that the power delivered to the heat exchanger is less than the power the laser sends and varies with weather. The fourth is the heat exchanger, whose materials must survive a concentrated beam and pass its heat to the propellant without failing, a demand the program treats as its central engineering risk. A final constraint is one the scheme shares with all of the Federation's beamed-power work, that a laser strong enough to launch a rocket is strong enough to be a weapon, so that the range, the beam path, and the airspace above would need the same interlocks and exclusions the directed-energy program already imposes. The program treats these as the questions a demonstrator must answer and holds to the directed-energy program's standing policy of claiming no capability ahead of a documented trial.
Reception
As part of the diversification agenda carried into the 1759 general election, Programa Rawra drew the same debate as its sister programs over whether public money should back a distant capability. Fred Strong, Vice-President of the Government and Secretary of Defense, welcomed the strategic logic of a launch capability that owes nothing to Alexandrium and treated cheaper, sovereign access to space as a matter of national resilience, while cautioning that the program should be judged on a working demonstrator rather than on its promise. Critics pressed cost and priorities. Yuiza Bohi'o of the Wakara People's Party questioned spending on an unproven launch method while the outer regions and island communities still wanted for reliable ground services, repeating her standing objection that federal money reaches prestige projects sooner than basic ones. Francisco Gabaza of the Federal Consensus Party warned that the diversification appropriations behind the effort were being carried on borrowing. Marcos Ferreira Gonçalves, the Leader of the Opposition, objected for the Democratic Socialists that the work concentrated public research money in a handful of large contractors, Javelin foremost among them. Dr. Rodrigo Castellanos of the Institute for Strategic Studies gave the measured verdict that laser-thermal launch was the most speculative of the Federation's space proposals, resting on a ground laser that did not yet exist, and that its place in the budget depended on the directed-energy work it relied upon proving itself first. Defenders answered that the study's costs were small and shared across an industry the Federation was funding regardless, and that a cheaper path to orbit was worth proving against the day the laser it needed was built for other reasons.
