Mach 30 wind tunnel to ‘put China decades’ ahead in hypersonic race

[52051]

The US built a MACH 30 wind tunnel in 2010 ..
heck we had a Mach 22 facility in Langley in 1999

stop acting like supa powa India...

Your source? and not all wind tunnels are the same:

The the only source I could find about this 30-mach wind tunnel that working in the US is they plan to build one in 2008, called "LENS-X", do you even know what does "X" means, smartass?

JF-22 takes the power of Three Gorges Dam to work, even for this assumed LENS-X, it is impossible to match with the power of JF-22,it is from a non-profit agency, at best it should be one of these 0.00...000001 meter diameter working for 0.00...0001 second toy tunnel that has very little engineering meanings, no wonder the Chinese scientists exclude such toy tunnels in their discussion.

And have you even read the article, you know what, the way how wind tunnel accelerating the wind speed also matters, not to mention the diameter of the wind tunnel, and how long the wind tunnel can keep that speed (in this case J-22 can keep Mach-30 for 0.13 sec).

No wonder the US lag far far behind China in anything related to hypersonic tests.

America looks like more and more like india, probably one of the reasons are more and more indians become americans

 

[dbc]

Your source? and not all wind tunnels are the same:

The the only source I could find about this 30-mach wind tunnel that working in the US is they plan to build one in 2008, called "LENS-X", do you even know what does "X" means, smartass?

It’s LENS XX it was built in 2010 to generate clean uncontaminated high enthalpy flows at velocities up to 35,000 ft/sec or > 10 km / sec = MACH 30.

 

[52051]

It’s LENS XX it was built in 2010 to generate clean uncontaminated high enthalpy flows at velocities up to 35,000 ft/sec or > 10 km / sec = MACH 30.

You still dodge my questions, if you could not answer my question, dont waste my time then.


This is calspan's official website, I could not even find anything on their Mach-30 wind tunnel here, either they dont have it or the tunnel is too insignificant and too useless to mention there:

Subsonic, Transonic Wind Tunnel Testing Services (calspan.com)

Btw, other than toy wind tunnel, I seriously doubt a tier-3 unvieristy's research center can maintain a wind tunnel that take the power of Three gogre dam to work.

So stop bullshit like a typical indian.

 

[dbc]

You still dodge my questions, if you could not answer my question, dont waste my time then.


This is calspan's official website, I could not even find anything on their Mach-30 wind tunnel here, either they dont have it or the tunnel is too insignificant and too useless to mention there:

Subsonic, Transonic Wind Tunnel Testing Services (calspan.com)

Btw, other than toy wind tunnel, I seriously doubt a tier-3 unvieristy's research center can maintain a wind tunnel that take the power of Three gogre dam to work.

So stop bullshit like a typical indian.

CALSPAN?

I can’t help it if you are too stupid to use google to find things yourself. It doesn’t take the power of three gorge dam to run JF-22 genius. JF-22 is powered by chemical reaction not electricity. The author implied if JF22 was attached to a turbine it can produce the same power output as the three gorges damn.

Ground Test Facilities - CUBRC Aerosciences

CUBRC Aerosciences sector provides essential ground test data for hypersonic flight vehicles and precision evaluation.

cubrc.org

 

[FairAndUnbiased]

It’s LENS XX it was built in 2010 to generate clean uncontaminated high enthalpy flows at velocities up to 35,000 ft/sec or > 10 km / sec = MACH 30.

It's for air chemistry and thermal studies only, not aerodynamics. My guess as to why? It's tiny and can't fit aerodynamic models inside.

 

[52051]

CALSPAN?

I can’t help it if you are too stupid to use google to find things yourself.

Ground Test Facilities - CUBRC Aerosciences

CUBRC Aerosciences sector provides essential ground test data for hypersonic flight vehicles and precision evaluation.

cubrc.org

Google only tell you the speed, not the diameter and how long it can maintain that wind pressure/speed.

And according to google, this LENS-X is supposed to be located at the research center in Cal-Span yet CalSpan's official website don't even contain the description of they have such wind tunnel.

 

[dbc]

Google only tell you the speed, not the diameter and how long it can maintain that wind pressure/speed.

And according to google, this LENS-X is supposed to be located at the research center in Cal-Span yet CalSpan's official website don't even contain the description of they have such wind tunnel.

you are looking at the wrong CAL-SPAN. It’s CALSPAN-UNIVERSITY OF BUFFALO RESEARCH CENTER (CUBRC), NEW YORK

 

[52051]

OK, I finally found this one:

LENS XX Expansion Tunnel for Velocities from 2,000 to 35,000 ft/sec (cubrc.org)

Just the speed, nothing about diameter nothing about duration, and according to their words, the wind tunnel is not even mean to study aerodynamics, so all point to a toy wind tunnel.

I guess thats the reason why the Chinese scientists exclude this toy tunnel in their discussion in the news.

Actually just common sense is enough to tell you a college's center wont have sufficient power to run a wind tunnel that takes the power of Three Gorge Dam to work, but you know, logic and common sense are a rarity among indians, thats why we have to waste a few posts here.

 

[dbc]

It's for air chemistry and thermal studies only, not aerodynamics. My guess as to why? It's tiny and can't fit aerodynamic models inside.

Wrong!

Wind tunnels have been used to test race cars, fighter planes, even bobsleds, but there's only one wind tunnel in the world that can hit Mach 30. The LENS-X wind tunnel can hit the hypersonic speeds necessary to test the latest ultrafast aircraft, space planes, and NASA's Orion space vehicle (pictured).

https://gizmodo.com/worlds-fastest-wind-tunnel-goes-hypersonic-5074997

 

[dbc]

Actually just common sense is enough to tell you a college's center wont have sufficient power to run a wind tunnel that takes the power of Three Gorge Dam to work

You are welcome to live in denial and dismiss LENS XX as a worthless toy.

But please don't keep repeating the same nonsense. It does not take the power of the three gorges dam to run JF-22 - you sound stupid. The JF-22 uses chemical explosions not electric power.

Part of China’s success in hypersonics is because of the unique technology used in its wind tunnels. Unlike facilities in other countries – which use mechanical compressors to generate high-speed air flow – the JF-22 uses chemical explosions.

 

[FairAndUnbiased]

Wrong!

Wind tunnels have been used to test race cars, fighter planes, even bobsleds, but there's only one wind tunnel in the world that can hit Mach 30. The LENS-X wind tunnel can hit the hypersonic speeds necessary to test the latest ultrafast aircraft, space planes, and NASA's Orion space vehicle (pictured).

https://gizmodo.com/worlds-fastest-wind-tunnel-goes-hypersonic-5074997

But that's not the LENS-XX which does not have aerodynamics listed as a possible test parameter.

 

[ZeEa5KPul]

It's for air chemistry and thermal studies only, not aerodynamics. My guess as to why? It's tiny and can't fit aerodynamic models inside.

Ooooo... busted!

 

[dbc]

But that's not the LENS-XX which does not have aerodynamics listed as a possible test parameter.

LENS XX is the upgraded LENS X.

The Green box = LENS XX from 2 km/s to 12 km/s ~ MACH 35 @10 to 90 km altitude.
Wonder why they'd test Fire-II flight experiment, RAM (RIM missiles), Apollo, SLV and space shuttle at LENS XX if it had "no aerodynamics" capability.

Quit grasping at straws.

 

[CAPRICORN-88]

Indian media still believe that the best Chinese subs are the Russian imported Kilo subs. To them, everything build by China is junk...And always will be. I wonder if Indian military strategists have the same mindset.

Just leave them alone.

It is delusional to even think that they are in the same league.

Maybe in cricket.

 

[FairAndUnbiased]

LENS XX is the upgraded LENS X.

The Green box = LENS XX from 2 km/s to 12 km/s ~ MACH 35 @10 to 90 km altitude.
Wonder why they'd test Fire-II flight experiment, RAM (RIM missiles), Apollo, SLV and space shuttle at LENS XX if it had "no aerodynamics" capability.

Quit grasping at straws.

From your own source:

"The LENS XX Expansion Tunnel was designed and constructed by CUBRC to provide a research and testing capability to investigate real gas, shock layer chemistry, viscous interaction and ablation effects on the performance of hypervelocity vehicles."

There are no aerodynamics tests listed here. All of these are chemical and thermal effects that can be tested by coupon samples of the surface material, no need for aerodynamic shaping.

They are likely to be testing surface material for, as they list: ablation effects, surface-gas chemistry and viscous flow at the surface.

A further advantage of the JF-22 is that it has 130 ms run time while the LENS-XX has 1 ms run time (page 4 of CUBR's own publication) which provides 130x more data per experiment and allows for study of stability effects.

CUBR also notes that the LENS-XX has just 200 us of steady state run time (see figure 14).