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I've heard this sound a couple times in the past few weeks, and I'm wondering what it is. It sounds like an aircraft decreasing speed and dropping in altitude really quickly, and then a few seconds later, it sounds like a 'sucking up' sound (best way I can describe it).
Does anyone here know what I'm talking about? Would this type of sound be made by commercial aircraft, or military? We do have some Air Force/National Guard bases nearby.
And what part of the flight profile? Take off/landing.
Definitely seems to be mid flight, because it seems to come from overhead and I’m not immediately close to an airfield or airport where I’d hear take off or landing sounds.
This might sound like a dumb question, so bear with me. But does the military practice stalling out and taking off tactics mid flight in some of their fighter jets? It almost sounds like that is what’s happening; stalling out and taking off.
The CO Air Guard has a wing at Buckley; they fly F-16C Block 30s, the block being a sub-model of an aircraft model. So there's activity at Buckley, it sounds like a practice flameout approach. The aircraft flies over the airfield or from a ten-mile final around 7000-10,000 feet above the ground. The engine is reduced to IDLE, and the aircraft glides to the runway; it's an emergency procedure, it's a one-shot deal, so it's practiced a lot to ensure proficiency. I have had to do three non-practice FOs in my career but never with an engine failed, just as precautionary measures.
In any case, the practice procedure requires the pilot to advance the throttle to mid-range for a few seconds to ensure the engine is responding, and this happens somewhere about 3-4000 feet above the ground. That makes for a sudden quiet-loud-quiet noise profile and it can be somewhat disconcerting, especially the abrupt silence that comes after the noise.
The CO Air Guard has a wing at Buckley; they fly F-16C Block 30s, the block being a sub-model of an aircraft model. So there's activity at Buckley, it sounds like a practice flameout approach. The aircraft flies over the airfield or from a ten-mile final around 7000-10,000 feet above the ground. The engine is reduced to IDLE, and the aircraft glides to the runway; it's an emergency procedure, it's a one-shot deal, so it's practiced a lot to ensure proficiency. I have had to do three non-practice FOs in my career but never with an engine failed, just as precautionary measures.
In any case, the practice procedure requires the pilot to advance the throttle to mid-range for a few seconds to ensure the engine is responding, and this happens somewhere about 3-4000 feet above the ground. That makes for a sudden quiet-loud-quiet noise profile and it can be somewhat disconcerting, especially the abrupt silence that comes after the noise.
You're quite welcome. The whooshing or sucking sound you describe could be the nozzle closing and opening as well; it sounds a lot like an air-powered impact wrench one hears in a tire shop.
Only example I could find that has the right sound:
You're quite welcome. The whooshing or sucking sound you describe could be the nozzle closing and opening as well; it sounds a lot like an air-powered impact wrench one hears in a tire shop.
Only example I could find that has the right sound:
So does the actuator work on a similar principle to an air wrench?
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