Developing an environmentally friendly propulsion system using an advanced technology and materials
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Nowadays, satellites have a short lifespan due to the limited quantity of propellant that can be taken on board. On the other hand, some of the used propellants are not environmentally friendly, some of them being considered even poisonous, as hydrazine. This paper presents a new design concept for an environmentally friendly satellite propulsion system where an advanced technology and materials are used. This propulsion system is presently in a research-design-manufacturing stage at the Romanian Research and Development Institute for Gas Turbines - COMOTI. To reduce the necessary propellant quantity, in the case of cold gas propulsion systems working with gaseous N2, the periodical heating of gas using concentrated solar light was considered. When the correction of satellite attitude is necessary, the cold N2 is sent from the main tank in a small service tank placed in the focal point of a gold plated composite parabolic mirror. The mirror is permanently oriented with the concave (reflective) surface to the Sun. The sun rays parallel with the mirror’s symmetry plane are focused by the parabolic mirror on the service tank placed in its focal point (line). In this way the temperature of N2 from the service tank increases quickly with several degrees Celsius and the reaction force increases when the gas is expanded in the Laval nozzles. The parabolic mirror is made of carbon fiber composite, thus making the structure very light, (around 0.5 kg). The Laval nozzles have extremely thin walls (0.5 mm) being made using a technology of wall stiffening with Cerrobend alloy during machining.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it