The curvature of the Earth and the black of space from a near-space flight

Stratospheric Balloon Flight Test
for Satellite Hardware

StratoStar flies your satellite hardware to 60,000–100,000 ft on a stratospheric balloon and returns real flight data, and the hardware, in 72 hours. TRL 5 to TRL 7 in a single campaign. Firm-fixed price, published flight dates, 99%+ recovery.

100K ft

Max Altitude

2–80 lb

Payload Range

2–6 hrs

Flight Duration

1–3 mo

Turnaround

Private missions carry payloads up to 80 lb, beyond the 20 lb rideshare limit. Request a Private Mission →

What Is a Stratospheric Balloon Flight Test?

A stratospheric balloon carries your hardware to 60,000–100,000 ft, into near-space, and holds it there while it runs. Your payload sees near-vacuum, −60°C to −70°C, cosmic radiation and real RF path loss at the same time, which is the part a ground chamber cannot reproduce. Then it comes back, with the data and the hardware in your hands inside 72 hours.

StratoStar is a stratospheric balloon flight test company. We do not sell balloons or build platforms for other people to operate. We fly your hardware, on a firm-fixed price, against a published Flight Test Calendar.

Why Near-Space Flight Test

Real Environment, Real Data

Near-vacuum, -60°C to -70°C, <1% sea level pressure, cosmic radiation. Your hardware operates in an integrated, in-situ environment, not isolated in a chamber.

Speed & Certainty

A published Flight Test Calendar. Firm-fixed pricing. 1–3 month turnaround from contract to flight data. No budget surprises, no schedule slips.

TRL Advancement

A Mission Package suitable for TRL assessment. Get from TRL 5 to TRL 7 with real flight-heritage data, the proof your stakeholders need.

Ready to Flight Test Your Hardware?

Talk to an engineer about your payload, timeline, and flight test objectives. We'll help you choose the right service.