The range of the UAV is never low, the Predator in the RQ-1 era has a range of 5000 meters in reconnaissance missions, and the mission has been kept flying at cruising speed, which can reach 40 hours of flight time, and in the era of manned aircraft before UAVs, it is rare to hear that an aircraft is used as a unit of measurement in a takeoff and landing. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

As a 1-ton UAV, MQ-1 is really excellent, it has epoch-making significance, even after the load of weapons can still reach 14 hours, and such data is definitely quite good, but today, Yang Hui requires the UAV of AVIC Southwest to be larger than MQ-1 in range and duration.

Since the UAV project department is required to achieve a long endurance of the UAV, Yang Hui always has to give a visible approximate indicator: "The United States UAV development should now be at the forefront of the world, and the gnats UAV they have just entered service has reached a 40-hour cruising time, and although we have developed a UAV that integrates reconnaissance and fighting, it must also be done without performing a ground attack, to ensure a flight time of more than 45 hours, or a range of about 6000KM." ”

Anyway, the current AVIC Southwest is good enough in the field of small engines, and the rotary engine is now at the international first-class level, with sufficient power of 180 horsepower and low fuel consumption to ensure that the UAV can reach the level of MQ-1 at the minimum. In this case, after optimizing the aerodynamic shape and reducing the aerodynamic drag, the range or duration can naturally be increased.

For this kind of new UAV to meet such high range requirements, as the chief engineer of the project department, Yang Yue did not say that it could not be done, anyway, now with a good enough engine, the planned UAV will definitely perform well in terms of range and flight time.

At this time, there was also a new plan: "No problem, we also considered this aspect when we carried out the aerodynamic development work on the UAV not long ago, and in our plan, we need to design two different wings, which can be quickly replaced between them, so as to meet different mission requirements." ”

This year, Yang Hui is completely convinced, and the replaceable general wing design, this Nima is really a genius idea when used in drones.

To say that the idea of replaceable wings is definitely not the first to be proposed by the UAV project engineering department led by Yang Yue, this thing has appeared in the era of manned aircraft, but the aircraft at that time is a manned aircraft, and the design must be quite complicated.

But it's not the same if it really wants to be used on UAVs, the wings of UAVs are usually designed with straight wings, and it is no exaggeration to say that the UAVs with long endurance are actually more aerodynamically like ****** with an engine, at least that's what the MQ-1 UAV operator said in his original words.

The wing of the drone is definitely longer than the fuselage, and in order for the drone to be transported quickly, the drone in the design is usually the wing can be quickly disassembled, and the wing in transportation can be removed and packaged in a rectangular box the size of the fuselage to take away, and after being transported to the destination, it can be simply and quickly loaded on the wing to perform the task.

Since the wings are already designed to be quickly disassembled, it is possible to design different wings for the difference between long-endurance reconnaissance missions and short-endurance ground attack missions, and the only problem that needs to be paid more attention to is probably the need to add some flight tests for the differences between the two airfoils, but these are not actually problems.

After carefully summing it up, Yang Hui knew that this drone was definitely an epoch-making work: "I think this scheme is feasible, the same fuselage is equipped with two different airfoils, each for different combat missions." In the task of requiring long endurance, there is no need to design troublesome weapon anchor points on the wing, so that not only the aerodynamic drag is small, but also the space layout inside the wing can be much simpler, and it can be used to load fuel, and perhaps winglets can be added to the wing to reduce aerodynamic drag. ”

The idea of adding winglets to the long-endurance UAV is a test done by the US imperialists on the MQ-1 UAV after 2000, and the results show that the MQ-1 with winglets has been significantly improved in range and fuel consumption when performing reconnaissance missions.

But it's a pity that at that time, the U.S. imperialists had positioned the MQ-1 more as a UAV that often performed ground attack missions, and the reconnaissance mission naturally had RQ-4, RQ-170 These special reconnaissance UAVs to do, in the case of performing ground attack, the range of MQ-1 was not far away, so the role that can be played after adding wings slightly smaller is actually not obvious.

In fact, the real role of winglets is mainly on long-range aircraft, and for aircraft with a shorter range, it generally does not make much sense to install winglets.

This is also the real reason why the winglets that are almost standard on mainline airliners are not seen in regional airliners, and on long-range business jets that are not much different from the size of regional airliners, there are really reasons why winglets magically appear.

When the US imperialists tested the advantages of the MQ-1 using slightly smaller winglets, it proved that it was not suitable for the actual use environment required by the US imperialists, mainly because the US imperialists at that time were brainless and did not think of equipping the aircraft with two different wings to cope with the operational requirements that were not used.

Regarding the issue of adding wings and slightly smaller wings this time, Yang Yue only needed to think a little to understand, and immediately picked up the notebook on the side and calculated, and came to a conclusion after a while.

"I think the idea of adding winglets is feasible, and when the time comes, using this wing configuration to carry out reconnaissance missions should be able to achieve the 6000KM range you asked for just now, and even as long as the choice of winglets is good enough, the drag of the aircraft can be reduced a little more, and it is possible to exceed 6000KM."

This is the magic of winglets, after installing this thing, the longer the range in your aircraft design, the more considerable the benefits it brings, but it is a pity that there is no genius like Yang Yue in the last face to propose to do replaceable wing design on the drone, and naturally it is rare to see the use of drones in this regard.

With a wing configuration that is enough to adapt to reconnaissance, then the corresponding ground attack wing configuration must also be there, and this time Yang Yue's idea is not simple at all, and Yang Hui is even more fascinated when he hears it.

"The rotor engines that we can get now have a power of 180 horsepower, so it is entirely possible to design four weapon hardpoints on the wings, and then we can carry up to four small guided bombs in a single takeoff, which is almost enough for a general ground attack mission." (To be continued.) )