A Day of Flight Testing at NASA Armstrong

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Two men wearing tan flight suits face each other and walk on a concrete surface. The men both carry pilot helmet bags with flight gear inside. Both men are wearing green flight gear.

NASA flight test engineer A.J. Jaffe and pilot Nils Larson walk on the ramp before a flight Tuesday, Jan. 13, 2026, at NASA’s Armstrong Flight Research Center in Edwards, California. The two support the agency’s Crossflow Attenuated Natural Laminar Flow (CATNLF) project, which aims to lower fuel costs for future commercial aircraft by testing a scale-model wing designed to improve laminar flow.

NASA/Christopher LC Clark

Flight testing is a team sport. For nearly 80 years, teams at NASA’s Armstrong Flight Research Center in Edwards, California, have used flight testing to push the limits of aerodynamics and advance aviation.

Earlier this year, NASA’s Crossflow Attenuated Natural Laminar Flow (CATNLF) initiative tested a wing concept that would maximize the smooth flow of air known as laminar flow, which could lower fuel costs for future airliners. During flight testing, researchers strapped a scale-model CATNLF wing to the bottom of a NASA F-15 aircraft.

Here’s what a day of CATNLF flight testing looked like.

A NASA F-15 research aircraft is parked on a ramp at NASA’s Armstrong Flight Research Center in Edwards, California. Ground crew work beneath the aircraft on an experimental test article, resembling a ventral fin, mounted under the aircraft’s fuselage.

NASA ground crew prepares the agency’s F-15 research aircraft and Cross Flow Attenuated Natural Laminar Flow (CATNLF) test article ahead of its first high-speed taxi test on Tuesday, Jan. 12, 2026, at NASA’s Armstrong Flight Research Center in Edwards, California. The CATNLF design aims to reduce drag on wing surfaces to improve efficiency and, in turn, reduce fuel burn.

NASA/Christopher LC Clark

5 a.m. — Aircraft staging

Ground crews ready the aircraft for the mission. If the operation involves a chase plane — a second aircraft to monitor the test flight — it would also be prepared, along with its crew.

6 a.m. — Crew brief

Pilots, engineers, maintenance techs, project leads, researchers, photographers, and videographers meet to review the flight’s goals, weather reports, and final details.

Six people sit at a long desk and face computer monitors. The person most in view, to the right of the frame, wears a green plaid button-down shirt and a red lanyard around his neck. Each person is wearing a headset with a microphone that connects to a computer.

NASA researchers Mike Frederick, right, and Michelle Banchy, left, along with Ashante Jordan and intern Phillip Nguyen, sit in a control room and prepare for a flight test Thursday, Jan. 29, 2026, at NASA’s Armstrong Flight Research Center in Edwards, California. The agency’s Crossflow Attenuated Natural Laminar Flow (CATNLF) project aims to lower fuel costs for future commercial aircraft by testing a scale-model wing designed to improve laminar flow.

NASA/Christopher LC Clark

6:30 a.m. — Control room checks, air crew suit-up

Researchers head to the control room to complete day-of checks, confirming all communications, displays, and instruments are functioning.

Pilots suit up in life support, including custom‑fit pressure suits, harnesses, helmets, and masks. If a photographer, videographer, or flight test engineer will be in the aircraft’s back seat, they do the same.

6:45 a.m. — Air crew steps, control room preparations

The pilot completes preflight checks with the crew chief and technicians for the aircraft’s electrical systems. The pilot and the crew chief sign a flight preparedness report confirming the aircraft is ready to fly.

Inside the control room, the team prepares to monitor the flight using the same set of test cards, a step-by-step plan for the flight.

7 a.m. — Pilot secured in jet

The pilot and backseat crew member climb into their seats, strap in, and secure any gear they’ve brought for the test. The pilot completes preflight ground checks.

7:15 a.m. — Aircraft taxi

The pilot communicates with the control tower and taxis to the runway. Control room teams at NASA Armstrong monitor the aircraft via radio.

7:30 a.m. — Takeoff

The pilot accelerates down the runway and, at the proper speed, pulls back on the stick to take off. Once airborne, the pilot coordinates with air traffic control at Edwards Air Force Base and the NASA Armstrong control room while flying to the designated test area.

A white and blue painted jet aircraft flies above a mountain range. A model wing hangs below the aircraft’s center line. The cockpit is closed and two pilots are visible inside with flight gear on.

A F-15 aircraft owned by NASA’s Armstrong Flight Research Center in Edwards, California, flies above a mountain range on Tuesday, April 21, 2026. The agency’s Crossflow Attenuated Natural Laminar Flow (CATNLF) test article is attached to the bottom of this F-15. This project aims to lower fuel costs for future commercial aircraft by testing a scale-model wing designed to improve laminar flow.

NASA/Jim Ross

7:30 to 8:30 a.m. — Flight

At the test location, the team coordinates with the pilot on altitude, speed, and maneuvers. The test conductor relays each task, and the pilot completes them one-by-one. The pilot and control room monitor the performance of the hardware, instruments, aircraft, or software throughout the sequence. After completing the test points, the pilot returns to base.

8:45 a.m. — Landing, towing

The pilot lands and taxis to the ramp at NASA Armstrong, where the crew chief meets the jet. After the pilot exits, the aircraft is towed into the hangar for maintenance.

9:30 a.m. — Crew debrief

The pilot, project team, and mission controlstaff return to the briefing room tocapture lessons learned and document items for follow-up.

10 a.m. — Data download, second flight prep

Teams download flight data for analysis. If two flights are scheduled, preparations begin immediately for the second.

Four people walk toward a building on a concrete surface. Each person is wearing a flight harness, and other green flight gear, as well as a tan flight suit and tan boots. Each person also carries a flight helmet bag and other small bags with various flight gear inside.

Four NASA employees walk toward a hangar after a flight Thursday, Feb. 4, 2026, at NASA’s Armstrong Flight Research Center in Edwards, California. The team supports the agency’s Crossflow Attenuated Natural Laminar Flow (CATNLF) project, which aims to lower fuel costs for future commercial aircraft by testing a scale-model wing designed to improve laminar flow.

NASA/Christopher LC Clark