There's a jet of air flowing over 39,000 feet.

The speed varies from west to east at about 60 kilometres per hour.

That's why airships flying to the west must advance through the headwinds.

Six ion engines mounted on aircraft fiercely increase output.

However, it is not easy for an airship to reverse the headwinds.

The engine is full, but it's only 30 to 40 kilometers away.

Compared to jet engines for fighters with a thrust weight ratio of 12 to 1 or higher, ion propulsion engines have only 2.5 to 1 thrust.

It is only a quarter less output.

With this kind of output engine, it is very difficult to do the airship maneuver as you please.

Thousands of times more powerful alien technological performance than conventional satellite ion engines.

However, it is difficult in the first place to compare it with the three great jet engines when they are the same class.

Due to the nature of the aircraft, the aircraft is not as streamlined as the aircraft, but is heavily resistant to air.

Whoo-hoo!

While the aircraft fights jet currents at 39,000 feet above ground level, hope talks with Dr. Nam over a drink of raw fruit juice.

“Oh, that's good. This is the famous 2,000 won raw fruit juice.

Hope. How are things with Ye Jin these days? ”

“Well, a little bit. ”

When I remembered the relationship with Ye Jin that didn't suit me, hope scratched my head.

“Take them where they belong and live with them... What do you want to live with? Living where you belong. ”

It is also the advice of a free spirit, Dr. Nam.

A man who doesn't need to be seen by anyone who can't even see the country.

But hope is nothing but plains.

The ability to achieve hope is just being audacious...

“Hmm... Well, I have to soothe her for now. ”

“By the way, I have a feeling the first airship is going to be tough. ”

Nam said he looked at the external condition of the first airship on a large screen and nodded.

“Right... the first airship is a little... I see. ”

“It seems like a balloon-type airship is a mid-20th century design.

I'm gonna have to keep an eye on this. ”

Hope also sympathized with what Dr. Nam said.

“I think so.

It seems that the stratospheric aeroplane has yet to be properly tested at the operational level.

Balloon-type aircraft are only tested at low altitudes. ”

In fact, even the best experts in the world gathered at the Water Source R&D Center do not predict which of the three aircraft will perform best.

This is because it is very difficult to anticipate the problems that will be encountered in thread testing even with supercomputer simulation.

However, I certainly realized one thing in this trial.

Balloon-type aircraft are very susceptible to turbulence compared to aircraft designed in the 21st century.

Balloon-type design is the longest running form of reliability.

However, it seems to be affected too much by weather conditions.

However, once it reaches 39,000 feet, all three vessels are still cruising.

“Flights above 39,000 feet have been successful to date.

From now on, each aircraft will continue to fly, slowly rising to 60,000 feet. ”

At the end of the Nebula, a high-altitude flight that finally rises to near the stratosphere begins.

The washing aircraft slowly elevates towards the stratosphere by reducing the air sac further.

Then, a balloon-type airship crashes at 50,000 feet and stops rising.

Suddenly, in ground control centers and trucks, operators and engineers are desperately trying to control the restoration of gas.

However, the aircraft is no longer elevated from 50,000 feet.

The second sac in the front is not retracted properly and does not fit the center of gravity.

Higher altitude increases the risk that the gas will overturn.

Ah ~ ~ ~

A status error message is received on a large screen installed outdoors, and the balance of the airship breaks down, causing the elasticity of the sadness to burst.

“Ah! Hope, we have a problem with the first balloon-type airship.

Bladder 2 is inoperative. ”

In the words of the Flight Test Team Leader, hope flies and bears think about the cause of the problem.

The air sac on the airship is not just controlling the rise and fall.

The function of appropriately contracting and expanding each airbag to center of gravity is also performed.

“Hmm.. It looks like the internal mechanical device associated with the air bag broke when it was swept away by turbulence. ”

Hope spoke of assumptions that anyone could think of with a plausible look.

“It's a geopolitical center. The compressor motor connected to valves 3 and 4 on Flight 1 is now in vain.

There appears to be a problem with the internal circulation device.

The pipes are blocked and the air sac no longer contracts. ”

This is the voice of the Operations Center Engineer who was checking the status monitor.

It also seems that the gas was anxious when it was swept away by strong air currents as it rose, leading to the breakage of internal mechanical parts.

The second and third aircraft continue their ascent without showing any problems yet.

Then there was a problem with the second airship, 57,000 feet above sea level.

It's a caterpillar airship, so the gas is fluidic, so you can't control your attitude properly while squirming at high altitudes.

There is no problem with elevation, but there is a subtle problem with position control.

“Hope, we have a problem controlling the second airship's horizontal position. ”

“Oh, my God!"

Problems arise in succession, as if trying to show that nothing happens at once.

As expected, the stratospheric aircraft is not worth it.

In fact, even under very good weather conditions, there are very few stratospheric aircraft that have been successful in testing flights around the world.

Fortunately, however, the third aircraft managed to safely climb to near the target altitude.

The third modified aircraft, seated at 65,000 feet altitude, finally controls the thrust of the ion engine and enters into attitude control.

All of the washing aircraft stopped rising and, in a quiet voice, the nephew announced the success of the third aircraft's high-altitude flight.

“The third aircraft finally reached its target altitude, 65,000 feet above sea level. ”

Waaaaaaah!

Come on, come on, come on.

“Finally... successful."

Applause comes out in unison with people cheering.

The third aircraft, located on the eastern seaboard near Ulleungdo, is stationary at exactly 65,000 feet above sea level.

Finally, Korea succeeded in stopping a stratospheric airship with a payload of 40 kilos above 65,000 feet in the world.

Variable aircraft that have now succeeded in stopping at target altitudes have many mechanisms that convert the shape of the aircraft to that of other aircraft floating in the West and South Seas.

So there are more than 20% fewer drawbacks with payloads, but unlike the previous two aircraft, the first attempt was successful and the fewer payloads are negligible.

It is time to enter the final test of GPS with three aircraft.

Hope gave orders to the groundskeeper center.

“The geodetic centre anchors each airship in its current position, and the GPS system functions. ”

“Good copy, initiate PDGPS operation. ”

The cloud GPS developed by the ward began to operate on the airship.

While the cloud GPS system collects the location data of the terrestrial antennas on the aircraft, people launch the GPS app on each smartphone.

Cloud GPS references the ground antennas to the standard location.

The computer embedded in the aircraft takes about 10 minutes to perform the initial position vector data operation.

A signal called PDGPS initialization floats on a new smartphone created by Samdo electronics while the airship computer performs position vector precision operations.

PDGPS is currently the name of the GIS standard, which stands for Windboat, which will replace AGPS in the United States and Glonas in Russia.

Smartphones held by people in the field include the new GPS chip, Navis R chip, which supports PDGPS.

At the end of the position backer operation of the ground antenna on the airship, PDGPS data indicating the position of the airship is sent to the Navis R chip.

Smartphones with hope also have the last chance to download PDGPS data.

“The head of the research team is finally sending the initial GPS data to the smartphone. ”

“It will take about two minutes to download all the GPS data packs from the three airships. ”

Hope nodded in response to the research team leader.

“Yeah, well, let's just slow it down. ”

The data initialization download was completed on the smartphone as people waited two minutes.

Then, when I launched the GPS app, a map appeared.

GPS coordinates point exactly to Muan Airport.

However, the test has not yet been completed.

The error rate of the PDGPS should be determined.

“Hooray, I'm getting nervous. ”

Leaving the last test to check the margin of error, the patient sighs and looks at the painted crosshairs on the floor.

“Even if you're nervous, you should check it out. How much error. ”

Hope slowly walked towards the red cross marked with a GPS reference point.

People's gaze is drawn towards the hope of walking under the cross in unison.

I looked back and looked at the coordinates floating in the smartphone app standing in the middle of the cross.

“Hmm...”

Latitude and longitude differences vary from 4 meters to 70 to 80 centimeters, respectively, from the coordinates corresponding to the original crosshairs.

Within the expected error range of 5 meters.

This is a great success.

“Our PDGPS has finally succeeded. Error is within 5 meters range. ”

Waaaaaaah!

“We did it, we did it! ”

“Wow, it's a big deal, it's a big deal! ”

“Kun Wondervoile”

After more than half the success of the first experiment, everyone gathered here raised their hands and cheered.

Finally, it was the world's first successful GPS service using a stratospheric aircraft.

The performance of PDGPS is less than traditional satellite-based GPS.

AGPS, an existing U.S. GPS satellite, has an error range of less than one meter.

However, this is a very successful result given that the altitude of the aircraft is currently unstable and the three GPS signals available are only one-third that of the AGPS satellite with nine simultaneous signals.

With the success of the PDGPS, the ward is unwilling to be encouraged and shaken by congratulations everywhere.

“Well done, sir. ”

“I've been able to succeed with a lot of help from Ben. ”

“Good job, soldier. ”

“Thank you, Dr. Nam. ”

The atmosphere leading up to the second success is very good.

Now that the aircraft GPS has been successful, it is time to test the aircraft's communication terminal system.

The head of the Special Operations Team at Muan Airport used the integrated communication system for HGD1 to liaise with the Majong team at the Kimpo Center.

“Special Operations Team at Muan Airport.

Please exit the Kimpo Test Center. ”

“This is Team A at the Kimpo Test Center HR1 Magun.

Signal coming in successfully at H5 block frequency. ”

I can clearly hear the voice signal from the stables at the Gimpotest Center.

Waaaaaaah!

People burst into excitement and cheer together.

Following the GPS system, the relay of communications using the aircraft is also successful.

Communication between Kimpo and Muan Airport takes place successfully using a caterpillar aircraft floating on the west coast.

Due to the 50-kilogram payload problem of the airship, although there is a small relay built in that does not simultaneously broadcast outside 200 channels, all parts are still successful.

Korea is now officially the world's first successful country to provide stratospheric aircraft services.

“Waaaaah... success. Success!"

“We finally made it. ”

In fact, those who didn't expect such success in the first prototype airship experiment are very encouraged by the results.

Hope was handed over from the nebula, where people were cheering and assuming total responsibility for development.

Hope that the project was successful and felt good continued to extend greetings to the people gathered in the airfield.

“It is our hope that you will be the executive head of this Windscreen project.

Thanks to all of you here, we were able to achieve a very successful first flight.

Over the next month, three aircraft will be operating in the East Sea and the South West Sea, respectively, and will continue to conduct GPS and communications tests.

We still have night-stop flight and endurance tests on our batteries, so we hope you can work hard to build a more advanced second prototype airship to remedy the problems that occurred after the operation.

So let's thank all of you who have worked so far to develop our successful airship and join us in our future development. ”

Let's go, let's go!

An outdoor party echoes with cheer and celebrates a successful first test flight straight from the Muan Airport Cycle.

Meanwhile, a high-level US official who was observing an airship test event took out an iridium satellite phone and called somewhere.

“Director, Navis' stratospheric airship has completed a successful flight.

Yes, it is. Certainly 2.5 to 1 ion propulsion engines are surprisingly working normally.

Yes, it is.

With the success of this test, it appears that the wind project has already progressed by more than half.

Yes, I understand. I will keep an eye on you. ”

A high-level American greeting hangs out with people gathered at the airport after a short call.

On the other hand, it was not only the United States that monitored Navis' flight success.

Russia's FSB, China's General Intelligence Agency, and British intelligence and Israeli agents were also covering the Nabis flight test at the airport under cover.