MySimulator // H-7 Tidal Runner

Live tuning

Vehicle parameters

8 INPUTS

Hull mass1,450 kg

Water grip μ0.74

Skirt stiffness k92 kN/m

Skirt damping c14 kN·s/m

Motor rating90 kW

Cargo mass260 kg

Water-plane slope2.0°

Crosswind4 m/s

Sliders alter the live dynamics. μ is a simplified effective lateral/braking grip coefficient, not a measured hovercraft skirt specification.

Scene graph

Rig hierarchy

LIVE

H-7_TIDAL_RUNNER
├─ chassis (rigid body)
│ ├─ hull_shell
│ ├─ cabin_glazing
│ └─ cargo_deck
├─ skirt_ring (prismatic Y)
├─ fan_left (revolute X)
├─ fan_right (revolute X)
├─ rudder_L / rudder_R (revolute Y)
└─ cargo_crate (fixed / COM shift)

Navigation trial

Minimum-energy run

Outer marker

★★★

Cross 120 m of open water and reach the marker. Keep your line clean: crosswind and lateral slip cost energy.

0 / 120 m120 m remaining

★ ≤ 0.52 kWh ★★ ≤ 0.42 ★★★ ≤ 0.34

Captain's decision · trade-off

Choose your fan map

The energy budget is tight. Select a drive profile before releasing the throttle.

⚠ SQUALL CELL · LOAD SHIFT

Rain has reduced effective grip; cargo lashings have shifted 0.62 m to port. Reassess your turn-in speed.

BRAKING DISTANCE v² / 2μg · analytic guide

TILT / STABILITY MARGIN live vs. static tip limit

Engineering notes

The science · model & assumptions

CLOSE ×

Planar rigid-body model

m · v̇ = F_thrust + F_brake + F_drag + F_grade + F_crosswind

F_drag = −½ ρ C_dA · v|v| ; a_grade = −g sin θ

Grip and braking

F_brake² + F_lateral² ≤ (μ N)²

d_brake = v² / (2 μ g cos θ) [graph uses level-water approximation]

Hover skirt and stability

m ÿ + c ẏ + k(y − y_wave) = 0

T = 2π √(m/k) ; φ_tip ≈ atan((b − |y_COM|)/h_COM)

Powertrain

P_shaft = min(P_rated, F_thrust|v|) / η

Assumptions: flat-water planar motion, one effective grip coefficient, lumped hull inertia, simplified fan torque curve, linear skirt spring/damper, quasi-static roll/pitch response and a single crosswind axis. The load-shift event offsets the combined centre of mass laterally.

Not a certified simulator: there is no CFD, detailed cushion pressure field, spray momentum exchange, wave-impact hydrodynamics, six-degree-of-freedom slamming, fan blade aerodynamics or validated real-vehicle parameter set. The displayed “tip angle” is a geometric static estimate; dynamic stability is simplified.