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Suspected drone hits plane during Heathrow landing — Parallax Forums

Suspected drone hits plane during Heathrow landing

Ron CzapalaRon Czapala Posts: 2,418
edited 2016-04-19 17:46 in General Discussion
https://au.finance.yahoo.com/news/suspected-drone-hits-plane-during-133942759.html

The plane, an Airbus A320 with 132 passengers and five crew on board, was on its final descent into Heathrow when it was struck.
"A pilot on an inbound flight into Heathrow Airport from Geneva reported to police that he believed a drone had struck the aircraft," a spokeswoman for London's Metropolitan Police said.
"The flight landed at Heathrow Terminal Five safely. It transpired that an object, believed to be a drone, had struck the front of the aircraft".
A BA spokesman said the plane had been examined after landing and was cleared to operate its next flight.

http://www.bloomberg.com/news/articles/2016-04-18/u-k-probe-of-british-airways-plane-drone-strike-finds-no-debris

A U.K. police investigation into the alleged crash of a drone into a British Airways Airbus A320 aircraft has so far elicited no evidence of a strike and no suspects.
The initial probe found no damage to the airplane and a wide area search for suspects and debris has been unsuccessful, London’s Metropolitan Police said Monday. The pilot reported that the front of the aircraft was hit as it was descending over Richmond Park in southwest London at an altitude of about 1,700 feet (518 meters), shortly before landing normally at Heathrow Airport on a flight Sunday from Geneva.

Comments

  • Helium balloon? Anything else would leave a mark at those speeds.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    Bird?
  • Bird?

    That was what I was thinking. There are a lot more birds than model aircraft, and flesh and bone isn't much of a match for aluminum.
  • Martin_H wrote: »
    Bird?

    That was what I was thinking. There are a lot more birds than model aircraft, and flesh and bone isn't much of a match for aluminum.

    Quite wrong there. It all depends on impact speed. Jet turbine blades are usually made out of quite hard and temperature resistant material, still a bird can take down a engine.

    It's about the energy and the affected surface.

    Enjoy!

    Mike

  • I don't think the nose of the aircraft is aluminum since there sits inside a radar antennae and aluminum would prevent the transmission pulses from reaching out and touching something...far, far away.
  • ercoerco Posts: 20,256
    msrobots wrote: »
    still a bird can take down a engine.

    Birds took down a whole A320, just ask Sully Sullenberger.


  • W9GFOW9GFO Posts: 4,010
    Funny how they say they think a drone hit the plane. It would be more accurate to say they think the plane hit a drone.

    I would be interested to know why the pilot thinks it was a drone that they ran into, what did he see that led him to believe it was a drone?
  • Long ago when I was in the military, one of our helicopters (Sikorsky H-3) hit a seagull at about 110 kts. The bird first hit the top of the windshield frame, then the engine intake shield, then the main transmission fairing, and finally the tail pylon, fortunately missing the tail rotor. At each contact point there was blood smeared on the aircraft, and feather fragments adhered to the blood. Each contact point was really obvious. I hate to think what the bird itself looked like.

    I checked a couple of websites (including Airbus) and it appears the speed of an A320 at that part of the approach is around 130 kts. Since a quad is more rigid than a bird, it's pretty hard to imagine that a quad hitting the aircraft at 130 kts wouldn't leave some sort of mark or damage.

    I think Xanadu might have it; something insubstantial that made some noise but wasn't enough to even mark the paint.
  • Heater.Heater. Posts: 21,230
    edited 2016-04-19 16:52
    W9GFO,
    It would be more accurate to say they think the plane hit a drone.
    Why?

    Big jets arrive at Heathrow at the rate of one every 90 seconds along well defined approach paths. It's kind of awe inspiring to watch them come in from under one of those approaches nearby the airport. Especially in the evening when you can see a line of landing lights stretching far into the distance.

    If one were to put a drone up into that stream of airliners I would say the drone had gone up to hit a plane. It deliberately put's itself in the way.
  • Heater. wrote: »
    W9GFO,
    It would be more accurate to say they think the plane hit a drone.
    Why?

    Big jets arrive at Heathrow at the rate of one every 90 seconds along well defined approach paths. It's kind of awe inspiring to watch them come in from under one of those approaches nearby the airport. Especially in the evening when you can see a line of landing lights stretching far into the distance.

    If one were to put a drone up into that stream of airliners I would say the drone had gone up to hit a plane. It deliberately put's itself in the way.

    Yea, it's semantics. I think what Rich was saying is the aircraft is traveling faster than the drone, so it ran into the drone, bird, other trash.


  • Heater.Heater. Posts: 21,230
    Quite so.

    Thing is, unlike a bird or trash, a drone is up there with intent. The intent of it's human operator. Unless that human is as dumb as a bird or piece of trash.

    Still, from physical point of view they are both moving relative to each other so who hit who? More correct to say they hit each other or collided.
  • LeonLeon Posts: 7,620
    Drones have been banned over many parts of London during a visit the Obamas are making to the UK:

    http://www.bbc.co.uk/news/uk-36083916
  • W9GFOW9GFO Posts: 4,010
    Heater. wrote: »
    ...a drone is up there with intent. The intent of it's human operator. Unless that human is as dumb as a bird...

    A human, dumb? What are the chances of that?

  • OK, I saw this today, and it provides a pretty good picture of what happens when a bird strikes the front of a jetliner. I would suspect a drone would do even MORE damage.

    Mid-Air Collision With Bird Leaves 2-Foot Crater In Airliner Nose
  • LeonLeon Posts: 7,620
    Government says a drone was unlikely to have hit a BA aircraft:

    http://www.bbc.co.uk/news/uk-36159117
  • W9GFOW9GFO Posts: 4,010
    Leon wrote: »
    Government says a drone was unlikely to have hit a BA aircraft:

    http://www.bbc.co.uk/news/uk-36159117

    They also say another airplane saw a six foot drone with a red flashing light at 12,500 ft. Are "drones" the new UFOs?

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