A coaster has to be fun to the centimetre: a 47° chain lift to the crest at +42.00, a 78° drop into a 19.3 m pull-out, and a clearance envelope that must stay clear of every bent, catwalk and handrail on 2.1 kilometres of circuit. Ground Reality flies the profile in the window between park close and first dispatch, and checks that envelope against the steel that was actually erected.
Capture · Mission 29
The sheet above is a drawing of this. 10 capture waypoints, and every finding called as the aircraft reaches it — scroll sets the target, the mission keeps its own pace, and the page waits for it.
Sector · Theme parks
The plaza first, then the fountain show, then the wheel — and only then the lift hill, where the aircraft picks up the test train and crests with it at plus forty-two before riding the seventy-eight-degree drop down. Then the unit walks the plaza under that same drop and reads the bent that was twenty-two millimetres into the envelope before the shim pack went in.
The ride envelope is 2.60 × 2.10 m of air the train needs and nothing else may occupy. A catwalk bracket welded 60 mm proud at the loop exit does not appear in a model — it appears on a test cycle, at 91 km/h.
The circuit is scanned and registered against the ride model, bent by bent. Steel standing inside the envelope reads as a measured intrusion at the bent it happened on — flagged from 25 mm — and the same pass proves it clear again after the shim.
The park is open eleven hours a day and the ride opens with the gates. The only time anyone can fly the circuit is between park close and the first dispatch, and that is not a good hour to be planning a flight.
Missions are planned once and flown to schedule: the profile pass runs the full circuit at 0.6 cm detail, 2,140 images, inside the night window, with the dock launching itself and the processing finished before the first crew badges in.
A ride opens on five hundred test cycles, water-dummy runs, brake retardation tests and an evacuation drill — all of it signed on paper that goes into a folder and gets asked for by an inspector two seasons later.
Your commissioning scripts run as structured gates on every cycle and every system: chain speed, anti-rollback, brake retardation, dispatch interval, evacuation time. Each result lands against the ride, the cycle and the dated frame that proves it.
24
Rides on one record, from bored pile to first dispatch
2.1 KM
Track surveyed as built across the park, joint by joint
100%
Ride envelope verified clear against the erected steel
The program owns the hours the guests never see. Between the 22:10 close and first dispatch, the circuit is flown, registered and proven clear — so the gates open on a ride that was measured overnight.
On park close, before the first crew badges in
The dock launches itself when the park empties and flies the whole circuit — lift, drop, loop and brake run — with processing finished before the first crew badges in.
0.6CM DETAIL · IMAGES 2,140 · FULL CIRCUITEvery pass, bent by bent against the ride model
The 2.60 × 2.10 m of air the train needs is offset along the track and checked against the steel that was actually erected. Anything standing inside it reads at the bent it happened on.
ENVELOPE 2.60×2.10M · TOL 25MMEvery test cycle, water dummies to evacuation drill
Chain speed, anti-rollback, brake retardation, dispatch interval, evacuation time — each result lands against the ride, the cycle and the dated frame that proves it.
CYCLES 500 · GATES 34 · CITEDRide by ride, on the maintenance clock
The same record carries all 24 rides — 2.1 km of track surveyed as built, joint by joint — so the season's questions are answered from one place, not one binder per ride.
RIDES 24 · TRACK 2.1KMIn the window you already have. The park closes at 22:10, the dock launches itself, and the full circuit lands at 0.6 cm detail — 2,140 images, processed before the first crew badges in.
WINDOW 22:10 · IMAGES 2,140By offsetting it along the track. The 2.60 × 2.10 m envelope runs the whole circuit against the erected steel, and any bracket, catwalk or bent standing inside it reads as a measured intrusion — flagged from 25 mm.
ENVELOPE 2.60×2.10M · TOL 25MMThe 02:40 scan found bent 9 leaning 22 mm into the envelope at the loop exit. It was shimmed, re-scanned by 05:15 and read 1.42 m clear — and the ride opened with the gates.
BENT 9 · 22MM · CLEAR 05:15The cycle it happened on. Commissioning ran as 34 gates across 500 test cycles — chain speed, anti-rollback, brake retardation, evacuation — each result cited to the ride, the cycle and its dated frame.
CYCLES 500 · GATES 34Measured, yes: the pull-out reads +4.3 g inside limit on cycle 412, track gauge deviation holds at 1.8 mm, and the 91 km/h drop meets a 19.3 m pull-out radius that is on the record, not just on the sheet.
PULL-OUT +4.3G · GAUGE Δ1.8MMSame record. Twenty-four rides and 2.1 km of track carried together, joint by joint, from bored pile to first dispatch — the season's evidence lives in one place.
RIDES 24 · TRACK 2.1KMRead overnight on a park like this one: the profile pass, the envelope registration, cycle 412's gates and the morning's dispatch plan. Three of the 27 profiles wake up to it.
05:30 · COASTER 04 · LOOP EXIT
CLEARANCE
Bent 9 sat 22 mm inside the envelope on the 02:40 scan. The shim is in, the 05:15 re-scan reads 1.42 m clear, and cycle 413 can run on water dummies before the gates.
CITES: SCAN 02:40 · RE-SCAN 05:15 · RIDE MODEL
05:55 · PARK · 24 RIDES
HAZARD
Nothing stands inside an envelope this morning, and last night's gates all closed: pull-out +4.3 g inside limit, anti-rollback proven on cycle 412 — every result carrying the frame an inspector will ask for.
CITES: CYCLE 412 · GATES 34 · ENVELOPE CHECK
05:40 · COASTER 04 · STATION
SEQUENCE
The only hold on this morning's opening cleared at 05:15 with the clearance signed. Dispatch holds its 84-second interval, the profile pass is processed — the gates open on time.
CITES: PROFILE PASS · CLEARANCE 05:15 · DISPATCH 84S
Overlay capture on the model; drift caught while it's cheap
REV C VS BUILT · Δ FLAGGEDOne calendar for every autonomous capture on the portfolio
MISSIONS ON A CYCLEScheduled flights from a rooftop box; nobody drives to site
2×/DAY · 0 PILOTSData lands processed before the morning huddle
CAPTURE→RECORD 40MINYour checklists, structured, on every phase gate
TEMPLATES 214Figures are a specimen record, drawn to the platform's own conventions.
Send us one ride's model and your close time — we will fly the circuit inside the window and hand back the envelope check, bent by bent, before first dispatch.