Function srp_thrust_coefficient_kernel 

pub fn srp_thrust_coefficient_kernel<R>(
    thrust: Force<R>,
    q_inf: Pressure<R>,
    s_ref: Area<R>,
) -> Result<R, PhysicsError>
where
    R: RealField + FromPrimitive,

SRP thrust coefficient

$$ C_T = \frac{T}{q_\infty \cdot S_{ref}} $$

the freestream-normalized similarity number of the Jarvinen–Adams retropropulsion dataset (C_T = T/(q∞·A_m), model base area as the reference). Distinct from the duct solver’s nozzle thrust coefficient (normalized by p₀·A*) and from the Korzun–Cruz–Braun survey’s nozzle-referenced definition — same words, different normalizations.

Arguments

• thrust — retro-thrust T (N, ≥ 0).
• q_inf — freestream dynamic pressure q∞ (Pa, > 0).
• s_ref — aerodynamic reference area S_ref (m², > 0).

References

• Jarvinen & Adams, MC 70-3001-R2, NASA NAS 7-576 (1970), Nomenclature p. v (papers/jarvinen_adams_1970_ntrs_19720005324.pdf).