𝑖SIP · i5.2.2 Loads Analysis · Worksheet 4B, made flyable

Every force named, every force an arrow

▶ Watch the 26-second spot

The person as airframe — here an F-5. Solid arrows are always present. Dashed arrows are the environment this season. The jagged one is the shock load. Check the real items behind each arrow, size them S / M / L, and read the balance: steady flight when the arrows balance, climb when lift + thrust beat weight + drag — and a descent nobody declared, because they don't.

YOU — THE AIRFRAME · FREE BODY DIAGRAM
flight path → CLIMBCRUISEDESCENT TAILWIND the environment with you HEADWIND the environment against you LIFT what carries you — it arrives when you fly the mission WEIGHT what you carry everywhere THRUST your own push DRAG friction riding along GUST the shock load — the call, the diagnosis, the layoff READ THE BALANCE Steady flight — the arrows balance. Climb — lift + thrust beat weight + drag. A descent nobody declared — they don’t. Lift needs motion. Thrust burns fuel.
READING THE BALANCE — ONE HONEST SENTENCE
Check the loads below, or load R.’s airframe to see a filled example.
0
lift (eff)
0
weight
0
climb rate
0
thrust
0
drag + wind
—
course
FUEL — endurance at this burn—

A surrogate, and honest about it: the arithmetic here is aviation-shaped, not aviation-grade. The real instrument for your real loads is a logged record — that’s Hindsight Daily.

Take the card with you

Your free body, rendered as a card — the forces you named, the balance they read, and a link so a friend can fly theirs. Nothing uploads; the card is drawn on your device.

Worksheet 4B — the sources

The real item behind every arrow

Check what’s actually loading you and size it — Small, Medium, Large. The airframe reacts above. In the workbook this is where you also write who assigned it and keep / shrink / put down — the two columns this page can’t fill in for you.

Check a gust item first. A gust isn’t carried every day — it hits. The question is what the airframe does next.

The arrows point at the instruments

Each force on this page has a working instrument behind it.

The loads that got you here — i5.0.2 · i5.2.2
Career Load History
This page reads the forces on you today. That one inventories the load history that built the airframe — and traces each load back to who assigned it.
 Before the loads — the airframe
Find your material
The same loads land differently on different materials. Ten minutes, free, nothing uploaded.
 The mission — all eight spectra
MmM Flight Test
Fly your material through fighter, sailplane, transport, aerobatic, trainer, rescue, test bed, depot — or a mission mix.
 The record — real loads, logged
Hindsight Daily
One number a day. The fatigue analysis runs on what you actually flew, not what you meant to.
 The program — end to end
𝑖SIP — the program map
Where the loads evaluation sits inside the inner-𝑖 Soundness & Integrity Program.
 The paper — Worksheet 4B itself
The 𝑖SIP Companion Workbook
The full worksheet — sources, sizes, who assigned each load, keep / shrink / put down. Now in print — softcover & hardcover.
 The math — loads to damage
Hindsight 80/20
How swings become cycles and cycles become damage — the fatigue sheet behind everything here.