If you want to say that the warehouse of the straight 18, it is really a good design, first of all, it is reflected in the width of the warehouse, in the era of the straight 8, it is 1.96 meters wide of the warehouse floor, and it is really calculated that this data is actually in the 90s and how spacious the design is. Pen ~ fun ~ pavilion www.biquge.info

It is necessary to know, and it is necessary to make a comparison, the width of the Black Hawk's cargo floor is 1.88 meters, NH90 is 2 meters, and the meter 17 is 2.34 meters.

In this design, a new design was adopted, and the fuselage was reshaped by folded lines, which effectively adjusted the original design shortcomings and ensured that the width of the cargo compartment would not become smaller, but the thickness of the bulkhead was effectively controlled.

However, if it is good news that the width of the cargo compartment of the straight 18 has not been reduced, then in terms of height, the straight 18 is cut because it doesn't even know its mother, which is really a tragic word.

You must know that the height of the cargo compartment of the early Z-8 helicopter has reached 1.83 meters, which is enough to ensure that the soldiers of the Republic Army stand upright and walk in the cargo hold, so the troops equipped with the Z-8 helicopter can be said to be the best domestic ergonomics in this era.

In a sense, if you continue to make no big changes to the size of the Z-8's cargo compartment, only change the engine system and weight reduction design, then it will definitely be the most popular general-purpose helicopter among soldiers, and there is no one.

In these years, not only the Republic, but even the European and American helicopter design, which has always been advertised as paying attention to humanistic care and paying the most attention to ergonomics in industrial design, cannot ensure that the crew walks upright in the cabin.

The Super Americana Leopard is 1.55 meters tall, the Black Hawk is only 1.37 meters, and even the newly designed NH90 is also 1.58 meters high. Unless you are a heavy helicopter like the EH101, you may have a height of 1.9 meters, which can ensure that a soldier of average height can walk upright in the cabin.

Therefore, the 1.8-meter cargo compartment height of the straight 8 is actually just enough to ensure that the soldiers of the Republic walk upright in the cabin, and what a rare design this is, it can directly kill all the general-purpose helicopters in seconds, who can compete with it in ergonomics?

It's a pity that it is precisely because of the 1.8-meter cargo hold height data that the height of the aircraft is simply impossible to look at, which is why the current straight 18 design, the army requires a wild cut on the cargo hold height, which really makes the army's soldiers cry all the way.

"This is the cargo warehouse, now we have redesigned the cargo compartment, the original ship-shaped bottom design has been changed to a flat bottom design, so that we have successfully reduced the height of 0.4 meters, which is also our design for the height reduction of the aircraft, the effect is obvious, and the rest depends on this side, such as here........."

In terms of design, the Z-18 is a successful overhaul of the Z-8, not only by changing the design of the bottom of the boat to achieve height reduction, but also more directly shortening the height of the landing gear, which can also achieve a height reduction of about 0.2 meters.

And then there are others, of course, the height of the cargo compartment slashed, after these add up, in fact, it has unconsciously cut down about 1 meter of height, and it has successfully reduced the straight 8 from the original 6.6 meters to 5.6 meters, such data to say that the ship, in fact, has been able to meet the requirements.

However, this time, the engine design has been improved, and the turboshaft 6 engine reducer used in the original Z-8 will be placed vertically and the engine reducer will be placed horizontally, so that the height of the engine compartment can be reduced a lot.

As a direct result of this, the above various designs to reduce the height of the aircraft, as well as the new propeller hub design, etc., finally ensure that the height of the aircraft is controlled at about 5 meters, and there must be no problem on boarding.

The only unpleasant thing is that when walking around in the cabin of the straight 18 in the future, it is necessary to bend over and walk, and at this time, I still suddenly miss the beautiful ergonomic design of the straight 8.

At that time, the French were simply a Super Wasp helicopter specially designed for the race of our Republic, you must know that when the French developed the prototype of the Z-8 Super Wasp, the French were not 1.8 meters and could generally walk upright, so this is the great spirit of internationalism.

Now that I think about it, when China decided to imitate the super wasp, it must have taken into account the excellence of the cargo height design of this aircraft, but it is a pity that the current descendants of the unscrupulous will swing the knife at the straight 8.

But in any case, the current Z-18 is indeed the height of the original Z-8 helicopter, and has successfully achieved a reduction of 1.6 meters. Height down the plan.

In other aspects, such as the length of the plane, the length of the plane has actually been reduced, but the reduction of the length is much easier to say, first of all, there is no need to shorten the cargo hold, and the current length is almost enough.

However, the tail boom of the aircraft was shortened accordingly, after all, the rotor diameter of the straight 18 was reduced from the original 19 meters to 17 meters, and the tail boom of the aircraft must be reduced by 1 meter accordingly.

In this way, the size of the nh90 is strikingly similar to the straight 18 also shocked debut, and the engine of the straight 18 is actually more powerful, with a longer cargo compartment length, the task flexibility will be greater when used.

Anyway, in general, after the magic design of the Z-8 project, the size of the Z-18 is slightly about 15% larger than that of the NH90, but the engine is also about 20% more powerful than the RTM322.

Z-18 as a maximum take-off weight of 11 tons of general-purpose helicopter, the empty weight of the aircraft is 6.2 tons, when the time is counted with 2 tons of internal oil brought by the aircraft, or 0.8 tons of external fuel tank, the limit is the maximum fuel load of 9 tons of take-off, at this time can still leave about two tons of cabin load!

This data is actually a very good result for a general-purpose helicopter, if it is not with 0.8 tons of fuel plug-in, a total of 2.8 tons of load is definitely enough.

When flying on the plateau route, with the ability of the MZ-2200 engine, it can ensure that the load of 2 tons when carrying conventional fuel can still be had.

In the later stage, when this aircraft is used as a carrier-based aircraft, the empty weight will definitely increase, after all, it is necessary to install various anti-submarine equipment and the like, but with the physique of the straight 18, it is only trivial to ensure the installation of these anti-submarine equipment.

In the future, with the continuous improvement of the power of the MZ-2200 engine, the maximum take-off weight of the aircraft can also be increased, at least the strength of the fuselage of the straight 18 in the design can reach the maximum load of 13 tons without damaging the structural design of the fuselage.

You know, for example, NH90 is an aircraft with a maximum take-off weight of 9 tons, and the empty weight is only a little more than 5 tons, but the empty weight of the Z-18 is now a whole ton more than that of NH90, and these are the weight of the fuselage structure that must be paid to ensure the maximum take-off weight of 13 tons in the future. (To be continued.) )