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120 votes
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Can this helicopter/wrecking ball combo remain airborne?

EDIT Huge apologies to one and all, in my first version of this answer I mistyped 184 as 84, and then proceeded to do all my calculations based on that. This is the corrected version. Also, huge ...
Phil M Jones's user avatar
58 votes
Accepted

Which are more efficient in putting out wildfires: planes or helicopters?

Both have their respective uses. A fixed-wing carries far more water (3,200 gallons or 12 tons for the Be-200 vs 100-700 gallons for helicopters), but takes more local infrastructure to operate, and ...
Therac's user avatar
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50 votes

Can this helicopter/wrecking ball combo remain airborne?

The helicopter would be a UH60 Blackhawk. Max payload on a hook is 9000lb. At your mild steel density this is half a cubic meter, so the picture as you describe is impossible.
Pilothead's user avatar
  • 20.7k
47 votes

Can this helicopter/wrecking ball combo remain airborne?

Of course the photo is absolutely real. I know a guy who knows a guy who says he met the guy in front! 3) Assume the wrecking ball is solid mild steel with a density of 7.85 g/cm3. That's where ...
Therac's user avatar
  • 27.6k
25 votes

Could a patient be too large and too heavy for an ambulance helicopter?

150 kg being too heavy to lift for an ambulance EC-135 is not very believable. Screenshot above is from this site, stating a max payload/fuel weight of 1,375 kg with one 80 kg pilot on board. With a ...
Koyovis's user avatar
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20 votes

Can this helicopter/wrecking ball combo remain airborne?

Indeed helicopter/wrecking ball combo exists and do some useful job, check this video. The film shows how the Norwegian Public Road Administration cleared a potential rockfall debris prior to ...
Alex Zherebtsov's user avatar
17 votes

Could a patient be too large and too heavy for an ambulance helicopter?

Former helo pilot here.... I agree with the above regarding the overall weight of the aircraft probably not being an issue. Could have been the size of the patient, as mentioned. But I have two more ...
Cargo23's user avatar
  • 271
13 votes
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How do engineers make sure UAV don't land on their front propeller?

Due to center of gravity limitations, it would be impossible for any type of aircraft to be loaded so that the front became the heaviest part. The aircraft would not be able to fly. These UAVs are ...
Mike Sowsun's user avatar
  • 37.8k
11 votes

Could a patient be too large and too heavy for an ambulance helicopter?

Thanks for providing the links. The EC135 is a fairly large helicopter. No Mi-26, but it's not an R22 either. Any helicopter of this size is well capable of lifting a larger than average any human. ...
Therac's user avatar
  • 27.6k
10 votes

How do water bomber pilots deal with the changing forces and mass when scooping water?

I have experience on seaplanes, although not flying boats, and used to teach float ratings. The techniques for flying boats and floatplanes are more or less the same except for the differences due to ...
John K's user avatar
  • 132k
9 votes

Which are more efficient in putting out wildfires: planes or helicopters?

It depends on what you are trying to do. The planes aren't doing direct attacks. In other words, they don't usually drop on fires. They lay down lines of fire retardant or water as a fire break. ...
acpilot's user avatar
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7 votes
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Why large freighter planes still do not use intermodal (ship) containers given that size and shape are not problems?

There are probably multiple reasons, but one big one is weight. A standard shipping container is made of solid metal and weighs several ton(ne)s empty. An air cargo pallet on the other hand weighs ...
Pondlife's user avatar
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7 votes

Could a patient be too large and too heavy for an ambulance helicopter?

As stated by other anwers, the situation was not about weight. With pilot, full fuel and two medical personnel, regardless of the equipment packages there would still be at least 200kg of payload left....
Jpe61's user avatar
  • 29.1k
6 votes

How much water does a passenger airliner carry?

It is going to vary according to flight mission, passenger count, season, or what part of the world the flight takes place. Here are the capacities from a company document. ...
jwzumwalt's user avatar
  • 11.5k
6 votes

Why can't Centre of pressure and Centre of Gravity coincide?

Centre of pressure (CP), by definition, is the point at which the aerodynamic moment of something is zero. If you are talking about the CP of the whole airplane, then at trim condition, the CG must ...
JZYL's user avatar
  • 11.1k
5 votes

Can this helicopter/wrecking ball combo remain airborne?

If the ball is empty inside, it can probably be made even larger than the helicopter. ZMC-2 was a balloon made of metal, light enough to fly on its own. It even has some rudders that resemble the ...
h22's user avatar
  • 12.1k
5 votes

Can multiple helicopters be used to lift a heavy load?

The Soviets tested this for very outsize cargo - spacecraft components. The developers considered using a couple of Mil Mi-26 helicopters to "bundle" lift the Buran, but test flights with a ...
Andrew is gone's user avatar
5 votes

How does a variable-sweep-wing aircraft keep wing-mounted payloads straight?

Mechanically this can be done using the simplest form of pantograph, as a hinged parallelogram with one end fixed to the fuselage and the other to the ordnance pylon. Or, I suppose you could implement ...
Guy Inchbald's user avatar
  • 7,062
5 votes

How does a variable-sweep-wing aircraft keep wing-mounted payloads straight?

I was able to find this Panavia Tornado cutaway picture (took about 5 seconds): (Air International 1984-09 / P.Jackson - Tornado) Inside the left hand wing you can see a part labelled 197, with ...
Jpe61's user avatar
  • 29.1k
5 votes

Could a patient be too large and too heavy for an ambulance helicopter?

It just might be the stretcher - the ones I checked are only rated for 150kg so quite likely this might have been the main issue.
tsg's user avatar
  • 2,761
4 votes

Is lashing equipment considered part of a ULD?

Normally I would put this as a comment since I retired in 1999, and I don't know what current practice is. However, this is a bit too long for a comment. Also, this is from memory and it's been a long ...
Terry's user avatar
  • 39.2k
4 votes
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How would a helicopter deal with auto rotation when it transports a hanging payload?

In theory, with that load, the rotor revs will be higher during the descent, and releasing the load just before flaring will give the pilot more rotor energy to control the aircraft with the ...
xxavier's user avatar
  • 11.1k
4 votes
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What is the largest and heaviest payload ever flown?

Source: Popular Mechanics The Antonov-225 currently holds a number of records... Heaviest maximum take-off weight at 710 tons (1.4 million pounds) Total air lifted payload of 558,590 pounds Single ...
Ron Beyer's user avatar
  • 36.2k
4 votes

Why can't Centre of pressure and Centre of Gravity coincide?

Because: If centres of pressure and of gravity would coincide, there would be no inbuilt tendency for the nose to drop upon an adverse aerodynamic event like a stall. If someone walks along the ...
Koyovis's user avatar
  • 61.8k
4 votes

Is engine shp directly correlated with its payload capacity?

This is a complicated question, here is a simplified answer. Generating lift requires setting in motion a large quantity of air, as downwash. More lift requires more downwash, and that requires ...
niels nielsen's user avatar
4 votes

Why can Boeing V-22 Osprey carry more cargo internally than externally?

The difference is because when the cargo is inside the aircraft the weight is spread across the cargo compartment floor, whereas when it is carried externally, the weight is concentrated entirely on ...
Juan Jimenez's user avatar
4 votes
Accepted

Is there any way to bring down a large spy balloon without force?

Your suggestions may be entirely feasible, but they would need to be engineered, tested, built, and then deployed to the areas where they might be needed. Crews to operate these systems would need to ...
Michael Hall's user avatar
  • 26.9k
3 votes

How much water does a passenger airliner carry?

I used to work with the B747-400 when I was with Lufthansa. From what I can remember it had water tanks which could hold 1500kgs of water. On a long-haul flight from KUL to FRA we would generally ...
Anilv's user avatar
  • 4,566
3 votes

Can this helicopter/wrecking ball combo remain airborne?

Even if the wrecking ball is within the payload capacity of the helicopter, a problem will remain. The big issue with any sling loads is oscillation. A load that swings through an arc exerts a load ...
Hobbes's user avatar
  • 10.2k
3 votes

Can an aircraft get certified for different runway lengths through the FAA based on the amount of payload it is carrying during said takeoff?

Aircraft are not certified for one particular runway distance. They are certified to an absolute max structural takeoff weight, for airborne performance or engine out obstacle clearance. Performance ...
Mike Sowsun's user avatar
  • 37.8k

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