Jet-Assisted Roadster HOP - Flight Physics Simulator

Speed0km/h

Altitude0.0m

Roll0deg

G-force1.0g

Keys: W/S gas-brake (pitch in air) · A/D steer (roll in air) · Space thrust · Shift boost · Q/E yaw · C camera · R reset · P pause

Scenario

Readouts

Speed0 km/h

Altitude0 m

Roll angle0 deg

Roll rate0 deg/s

G-force1.0 g (peak 1.0)

Flight time0.00 s

Thrust0.0 kN

Thrust / weight0.00

Jet power (elec)0.00 MW

Exhaust speed0 m/s

Mass flow0 kg/s

Total impulse0.0 kN·s

Energy used0.00 kWh

Battery100 %

Max altitude0 m

Altitude & roll rate

Manual controls

Rate stabilizer (damps rotation in flight)

Jet model parameters

Lift-nozzle disk area (total) Fan + motor efficiency Pack power limit (assumed) Launch speed (autopilot)

Hover maths (momentum theory)

Ideal hover power P = T^3/2 / √(2ρA), electrical = P / efficiency. Hover needs T/W ≥ 1. Mass flow ᴁ = ρA·v_i, exhaust speed ≈ 2v_i, thrust T = ᴁ·v_e.

What was shown vs what is claimed

Shown (15 Oct 2026 public demo)

A two-seat electric sports car driving up a launch ramp.
Air-jet thrusters firing in flight, a 180° flip, and a landing on its wheels.
A hop lasting a few seconds — not sustained flight.

Claimed / unverified

Production in 2028 — a company statement, not independently verified.
No price has been announced.
No independent figures for thrust, power draw, flight time or certification.

What this simulator is

A generic fictional roadster with assumed numbers (1,800 kg, 100 kWh pack, 4 lift nozzles + 2 side nozzles).
Simplified rigid-body physics for learning; it is not a reconstruction of the real vehicle, and shows why hovering for long is very hard (try scenario 3).