Minimum spoiler speed in knots?

Minimum spoiler speed in knots?

• A. 160 kts
• B. 170 kts
• C. 180 kts
• D. 190 kts

Answer: (C)

Spoilers in flight need enough air flowing over the wing to work reliably, providing lift dump and drag without compromising control. On the ERJ 175, the flight spoiler system is inhibited at lower speeds to protect the wing and the spoiler actuators. The minimum airspeed at which the spoilers can be extended and function in flight is 180 knots. Below this, you can’t rely on spoiler deployment, so the smallest usable speed is 180 knots. Speeds like 190 knots would still be usable, but they’re not the minimum. Ground spoilers operate differently (typically on landing with weight on wheels) and aren’t the in-flight spoiler reference here.

Spoilers in flight need enough air flowing over the wing to work reliably, providing lift dump and drag without compromising control. On the ERJ 175, the flight spoiler system is inhibited at lower speeds to protect the wing and the spoiler actuators. The minimum airspeed at which the spoilers can be extended and function in flight is 180 knots. Below this, you can’t rely on spoiler deployment, so the smallest usable speed is 180 knots. Speeds like 190 knots would still be usable, but they’re not the minimum. Ground spoilers operate differently (typically on landing with weight on wheels) and aren’t the in-flight spoiler reference here.