Value chain · CLM-0958
In plain terms
What is left of the idea is useful but narrower: the timing system already tracks how the reference path stretches, and the fast part of that stretching is the structure's vibration. It cannot give the slow bending that the sensor-spacing question is about, but it could tell you how the vibration is shared between modes - which is the one thing the modelling could not settle.
The claim as recorded
The part of the idea that survives: tracking the reference path's phase at the phase control centre, high-passed above about 1e-3 Hz, yields the strain signature of the structure's bending modes at the reference tree's own density - every power module - and could constrain the modal spectral exponent that CALC-110 identifies as the input moving its permitted-spacing answer by a factor of two. Structural velocities at 0.09 Hz and above sit two decades in frequency above differential fibre thermal drift at 0.2 to 1.5 micrometres per second, so the two separate by frequency; the amplitude gap is nearer three decades and is not what the sentence relies on.
Evidence behind this: T0-derivation, MEDIUM because it needs the structural model approach 3 would build.
Scope and limits
THE HIGH-PASS DISCARDS THE QUASI-STATIC THERMAL BOW THAT CALC-109'S AMPLITUDE BAND DESCRIBES, so this does not replace CALC-110's assumed amplitude; it constrains the spectral exponent only. The strain-to-displacement inversion needs the cable routing and the bending kinematics, which is the structural model of approach 3. Drift rates and routing are assumed.
What it assumes
Cable routing at the structural cap; known bending kinematics for the inversion; drift rates as stated.
Where it comes from
This is the project's own working, shown in full:
CALC-111 section 4: white phase noise does not accumulate under tracking; master-oscillator error is common to every element and is piston (CLM-0903); differential thermal drift at ASSUMED 0.1 to 1 degC per hour on IVPO fibre at 5.4 mm per degC per 500 m run is 0.5 to 5.4 mm per hour. Bending reaches a cap-routed cable as (h/2) k^2 A of integrated strain.
Related records
- Answers question
- QST-013 not published in this release
Cite this
energyaperture.com/c/clm-0958
CLM-0958, Energy Aperture, as of 2026-09-17.
Connected records
Other published records linked to this one. A list, not a judgement.
- Also from SRC-107
- CLM-0033 (low confidence)Apart from a 1981 NASA review that found no evidence for the number and suggested a higher one, nobody was found to have revisited it, and...CLM-0060In 1981 a NASA review panel said the 230 watts per square metre figure rested on an obsolete theory with no experimental support, and made...CLM-0061The experiments were done. They found heating two or three times stronger than normal, not the tenfold effect predicted, no irregularities...CLM-0062By 1981 the theory was being revised to a steeper frequency dependence, which would raise the permitted power density.CLM-0063NASA suggested in 1981 that 550 to 600 watts per square metre might be reasonable, roughly two and a half times the figure still in use...CLM-0101The 1978 contract required the researchers to report fixes if ionospheric disturbance pushed the pilot-beam phase error past 2 to 3...CLM-0160A 1978-81 NASA design study calculated that simply pointing the satellite's structure accurately enough, without any electronic correction...CLM-0420NASA's 1981 report says the experiments found nothing supporting the 23 milliwatt limit, that the measured heating was two or three times...More on the source page.