Physical Transformation AtlasPTA
Pathway · p-cbec486935 · extends a recorded pathway

Chemical potential difference → Mechanical work

Chemical potential differenceCombustionHot gasGas-dynamic expansionBulk fluid flowAerodynamic and hydrodynamic liftMechanical motionMechanical work

Epistemic state of the route

known constituent relations
7 / 7 established or replicated · weakest constituent established
constituent maturity floor
K4 · experimentally observed
search for this exact route
Not assessed — complete composition not searched.
recorded-pathway overlap
shares relations, in order, with Combustion MHD generator · 4/7 relations shared
route-level evidence
0 sources for the complete composition · 5 cited by the constituent steps
boundaries and interfaces
BOUNDARY compatible · no region transition

Explorematrix context · physics checks · steps · route evidence · constituent evidence · cite

Matrix context

D = disequilibrium row · C = coupling family column. A cell reads the state of the atlas for that pair.

D.05 × C.29 · Chemical potential difference × Thermochemicalfamily: ThermochemicalD.05 × C.08 · Chemical potential difference × Heat engine (thermomechanical)family: Heat engine (thermomechanical)D.05 × C.24 · Chemical potential difference × Turbomachineryfamily: Turbomachinery

Typed bounds on this route

Every limit the atlas holds for this route, as constraint records: reached through bounded_by claims on the route's own entities. Hard bounds (an upper bound or a formula) decide the thermodynamic-bound check above; benchmarks, constitutive relations and resource limits are listed and never decisive. No prose limit exists anywhere (pass 42).

  • Betz limit · upper-bound · hard, filtered out by its applicability
    C_p ≤ 16/27 ≈ 59.3% of the kinetic power through the rotor disc

Steps

  1. 01
    chemical → thermal · loss to radiative
    • fuel, oxidiser and an ignition source; flame temperature 1500–2500 K
    gas · above ~700 K
    refs [1]
  2. 02
    Combustion —produces→ Hot gasestablishedclaim record
    thermal → thermal
    refs [1]
  3. 03
    thermal → kinetic · loss to thermal
    • the gas has an upstream pressure state above the downstream nozzle or duct pressure
    gas
    refs [2] [3]
  4. 04
    kinetic → kinetic
    • a directed high-speed gas stream leaves the nozzle — the disequilibrium whose content is bulk fluid motion
    refs [3] [2]
  5. 05
    kinetic → mechanical · loss to thermal
    • a rotor whose blades meet the stream at a working angle of attack
    bulk flow required
    refs [4] [5]
  6. 06
    mechanical → mechanical
    refs [5]
  7. 07
    Mechanical motion —converts into→ Mechanical workestablishedclaim record
    mechanical → mechanical · loss to thermal
    refs [1]

Evidence for the complete composition · 0

No source on record for this exact composition. The sources below support the individual steps, not the route as a whole.

Evidence for the constituent relations · 5

  1. [1]
    A. Bejan. Advanced Engineering Thermodynamics (4th ed.) (2016)
    Wiley · doi:10.1002/9781119245964 · crossref ✓ 2026-09-19 · record
  2. [2]
    NASA Glenn Research Center. Nozzle Design (Beginner's Guide to Aeronautics) (2024)
    NASA Glenn Research Center, Beginner's Guide to Aeronautics; page dated 2021-08-06, modified 2024-09-12 · www1.grc.nasa.gov/beginners-guide-to-aeronautics/nozzle-design/ · record
  3. [3]
    J. Marlin Smith. Preliminary results in the NASA Lewis H2-O2 combustion MHD experiment (1979)
    NASA Technical Memorandum 79135 (E-9983); prepared for the 18th Symposium on the Engineering Aspects of Magnetohydrodynamics, Butte, Montana, June 18–20, 1979 · ntrs.nasa.gov/citations/19790014726 · record
  4. [4]
    A. Betz. Das Maximum der theoretisch möglichen Ausnützung des Windes durch Windmotoren (1920)
    Zeitschrift für das gesamte Turbinenwesen 26, 307–309 · paper, no DOI · record
  5. [5]
    S. L. Dixon, C. A. Hall. Fluid Mechanics and Thermodynamics of Turbomachinery (7th ed.) (2014)
    Butterworth-Heinemann · doi:10.1016/C2011-0-05059-7 · crossref ✓ 2026-09-19 · record

Cite this route

Physical Transformation Atlas (2026). route p-cbec486935: Chemical potential difference → Combustion → Hot gas → Gas-dynamic expansion → Bulk fluid flow → Aerodynamic and hydrodynamic lift → Mechanical motion → Mechanical work. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/path/cbec486935

Ids and matrix addresses are stable across revisions; the revision hash identifies the exact canonical files the record was compiled from and is meta.data_hash in every /api export. Reuse terms: see the license field in any export.