International Aerospace Discussion - Jan 2018

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Pratyush
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Re: International Aerospace Discussion - Jan 2018

Post by Pratyush »


An interesting concept. When integrated with man portable atgm can be a formidable force multiplier
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Re: International Aerospace Discussion - Jan 2018

Post by Zynda »

Turkey seems to be moving ahead steadfastly on their various indigenous projects. Their latest LO UCAV KIZILELMA has achieved 10 flights so far with first flight happened back in Dec 2022...Also their homegrown Turbo-shaft powerplant TEI-TS1400 had its first flight on their indigenous helicopter GÖKBEY...good show. Their overall MIC & skill level seems to be higher than ours...I am not sure if their principal companies involved in major projects are private with state funded or entirely state run but their overall productivity seems to be better.
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Re: International Aerospace Discussion - Jan 2018

Post by arvin »

https://www.reuters.com/technology/spac ... 023-04-25/
TOKYO, April 25 (Reuters) - Japanese startup ispace inc (9348.T) is preparing to land its Hakuto-R Mission 1 (M1) spacecraft on the moon early on Wednesday, in what would be the world's first lunar landing by a private company if it succeeds.

The M1 lander is set to touch down around 1:40 a.m. Japan time (1640 GMT Tuesday) after taking off from Cape Canaveral, Florida, on a SpaceX rocket in December.
Worlds first private landing on the moon today. They will be live streaming it afer 8.00 pm IST, I think.
Few years back they had teamed up with Team Indus to access PSLV for launch. That did not materialize and they opted for SpaceX falcon 9.
Lisa
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Re: International Aerospace Discussion - Jan 2018

Post by Lisa »

^^Turkey was a member of COCOM. India was and probably still is, for some commodities, a sanctioned nation, ie Turkey is free to import all technologies and/or acquire licences to produce a heap of technologies that were then and again probably are still being denied to India.

https://en.wikipedia.org/wiki/Coordinat ... C000%20ft).

also see

https://en.wikipedia.org/wiki/Wassenaar_Arrangement

Although India is now a member of this treaty (joined in 2017), is was not so historically.
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Re: International Aerospace Discussion - Jan 2018

Post by arvin »

Japanese start up ispace has lost contact with Hakuto lander. Looks like it had a hard landing in its attempt to land yesterday.
My guess is it could not get the transition from horizontal to vertical position correctly.
Similar to what Vikram lander experienced.
There is some trick of trade to get that transition correctly.
Only 3 Ustaads Russia,US and China have mastered that trick.
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Re: International Aerospace Discussion - Jan 2018

Post by Rakesh »

https://twitter.com/VinodDX9/status/165 ... 23523?s=20 ---> TF-X is officially named 'KAAN'

Image
arvin
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Re: International Aerospace Discussion - Jan 2018

Post by arvin »

https://spaceq.ca/ispace-provides-a-clu ... ar-lander/

Some info on Hakuto lander final moments before crashing on the moon.

ispace also stated that they “confirmed that the lander was in a vertical position as it carried out the final approach to the lunar surface.” Once they ascertained the lander was low on fuel and descended rapidly to the Moon’s surface, communication was lost. They further stated that “based on this, it has been determined that there is a high probability that the lander eventually made a hard landing on the Moon’s surface.”
So it did get into vertical position and was descending. Running out of feul is tragic considering that they used a optimized orbit to reach the moon.
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Re: International Aerospace Discussion - Jan 2018

Post by bala »

Ex-Russian space boss questions US Moon landing
7 May, 2023
Dmitry Rogozin says that while many in Roscosmos defended Washington’s version of events, no one could produce irrefutable proof. Rogozin said he began his personal quest for the truth “about ten years ago” when he was still working in the Russian government, and that he grew skeptical about whether the Americans had actually set foot on the Moon when he compared how exhausted Soviet cosmonauts looked upon returning from their flights, and how seemingly unaffected the Apollo 11 crew was by contrast. According to Rogozin, no evidence was presented to him. Instead, several unnamed academics angrily criticized him for undermining the “sacred cooperation with NASA,” he claimed. Apollo 11 was the first manned mission to the Moon, with Neil Armstrong and Buzz Aldrin going down in history as the first humans to walk on the lunar surface. The flight was preceded by the unmanned Soviet Luna 2 program, which blazed the trail for Moon exploration.

Rogozin concluded by saying he still cannot believe that the US was able to pull off the feat, but is now unable to, despite the incredible progress in technology since the late 1960s.
// vow, this is serious allegation by a former Russian space boss. There have been many such allegations in the past.
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Re: International Aerospace Discussion - Jan 2018

Post by Jay »

bala wrote: // vow, this is serious allegation by a former Russian space boss. There have been many such allegations in the past.
Really? :rotfl:
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Re: International Aerospace Discussion - Jan 2018

Post by Rakesh »

^^^^ Do the Russians not have anything else better to do?

Are they bored with the war in Ukraine, that they have come up with this new hairbrained theory?
sanman
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

China building its own version of SpaceX Starship rocket -- most likely as the "Long March 9":



Image
drnayar
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Re: International Aerospace Discussion - Jan 2018

Post by drnayar »

bala wrote:Ex-Russian space boss questions US Moon landing
7 May, 2023
Dmitry Rogozin says that while many in Roscosmos defended Washington’s version of events, no one could produce irrefutable proof. Rogozin said he began his personal quest for the truth “about ten years ago” when he was still working in the Russian government, and that he grew skeptical about whether the Americans had actually set foot on the Moon when he compared how exhausted Soviet cosmonauts looked upon returning from their flights, and how seemingly unaffected the Apollo 11 crew was by contrast. According to Rogozin, no evidence was presented to him. Instead, several unnamed academics angrily criticized him for undermining the “sacred cooperation with NASA,” he claimed. Apollo 11 was the first manned mission to the Moon, with Neil Armstrong and Buzz Aldrin going down in history as the first humans to walk on the lunar surface. The flight was preceded by the unmanned Soviet Luna 2 program, which blazed the trail for Moon exploration.

Rogozin concluded by saying he still cannot believe that the US was able to pull off the feat, but is now unable to, despite the incredible progress in technology since the late 1960s.
// vow, this is serious allegation by a former Russian space boss. There have been many such allegations in the past.

https://en.m.wikipedia.org/wiki/List_of ... e%20Earth.

And it was not just one Moon landing
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

What is this thing? It looks like a Brahmos with wings & cockpit, and appears to be of WW2/postwar vintage:



Here's more:




Like Brahmos, couldn't take off on its own, and needed a boost to be brought up to airspeed before its engines could activate.
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

What are the chances of this fighter coming to fruition?
And then what are the chances of Pak getting it?
What threat could it pose to us?




It's called Kaan -- I'm assuming export version for Pak would be called Khan :P
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Re: International Aerospace Discussion - Jan 2018

Post by Bala Vignesh »

Given pakistan's current state, it would either be just getting back on its feet(best case) or become a complete failed state(worst case). In either situation, i dont think they will be able to afford to get this, unless Turkey willingly donates these to them and given their current economic situation, I don't see thay happening either.
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

How the hell can Turkey come up with a 5th-Gen fighter on its own? And what does that then say about us?

I saw an article saying Turkey will get Ukrainian jet engine technology:

https://en.defenceturk.net/turkey-and-u ... et-engine/
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Re: International Aerospace Discussion - Jan 2018

Post by VinodTK »

THOR Microwave Anti-Drone System Downs Swarms In Test
The U.S. Air Force recently conducted a first-of-its-kind test of the Tactical High-power Operational Responder, also known as THOR. A high-power microwave counter-drone system, the containerized THOR is designed to engage multiple drones at short ranges in a point defense role. This comes as the threat of drones, particularly ones operating in large groups or fully-networked swarms, becomes increasingly urgent around the globe.
:
:
:
“The THOR team flew numerous drones at the THOR system to simulate a real-world swarm attack,” notes Adrian Lucero, THOR program manager at AFRL’s DED. “THOR has never been tested against these types of drones before, but this did not stop the system from dropping the targets out of the sky with its non-kinetic, speed-of-light High-Power Microwave, or HPM pulses.”
sanman
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

Speaking of drones, this interesting design caught my eye - it's called the X-P4 Transwing:





Apparently, DARPA is sponsoring the next X-P5 iteration, which will weigh ~320 lbs
pravula
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Re: International Aerospace Discussion - Jan 2018

Post by pravula »

Looks like a quad with tilting rotors. Other than higher forward speed, is there any reason for tilting?
sanman
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

pravula wrote:Looks like a quad with tilting rotors. Other than higher forward speed, is there any reason for tilting?
The Transwing has feathered props (ie. variable-pitch props), which enables thrust to change between VTOL and forward flight, even while maintaining optimal engine RPM

What's interesting is that during the transition from VTOL to conventional forward flight, aerodynamic lift is still maintained. Even if the wings were to somehow get stuck in mid-transition, they would still generate adequate lift to support the aircraft.
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Re: International Aerospace Discussion - Jan 2018

Post by Pratyush »

pravula wrote:Looks like a quad with tilting rotors. Other than higher forward speed, is there any reason for tilting?
When compared to compound aircraft with seperate motors for both VTOL and horizontal flight. It is more efficient. As it has only one set of motors for both VTOL and Horizontal flight.

If you have seen quad rotors with a pushers propeller. Then the quad rotors are a dead weight in horizontal flight and pusher propeller is a dead weight in VTOL flight.

By having folding wings, it has solved that issue.
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

Vulcan Centaur from United Launch Alliance

NRao
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Re: International Aerospace Discussion - Jan 2018

Post by NRao »

Virgin Orbit declared bankruptcy.

And, sold their highly instrumented Boeing 747 testbed for a paltry $17 million!!!
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Re: International Aerospace Discussion - Jan 2018

Post by arvin »

^^^
So the new owner of Cosmic girl B747 is Stratolaunch.
They already own the six engined beast which can air launch heavier loads.
$17 million is approx Rs 140 crores. Less than the cost of prime real estate govt owns in mumbai or delhi.
We should have taken a shot at owning it considering it was an auction.
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

NRao
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Re: International Aerospace Discussion - Jan 2018

Post by NRao »

arvin wrote:^^^
So the new owner of Cosmic girl B747 is Stratolaunch.
They already own the six engined beast which can air launch heavier loads.
$17 million is approx Rs 140 crores. Less than the cost of prime real estate govt owns in mumbai or delhi.
We should have taken a shot at owning it considering it was an auction.
Stratolaunch, a private company, started in 2011. They have a goal with a timeline.
Stratolaunch LLC is an American aerospace company providing high-speed flight test services. It was originally formed in 2011 to develop a new air-launched space transportation system, with its corporate headquarters located in Seattle, Washington.
sanman
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

NRao wrote:Virgin Orbit declared bankruptcy.

And, sold their highly instrumented Boeing 747 testbed for a paltry $17 million!!!
arvin wrote:^^^
So the new owner of Cosmic girl B747 is Stratolaunch.
They already own the six engined beast which can air launch heavier loads.
$17 million is approx Rs 140 crores. Less than the cost of prime real estate govt owns in mumbai or delhi.
We should have taken a shot at owning it considering it was an auction.
And Rocket Lab (Nasdaq symbol RKLB) has purchased Virgin Orbit's Long Beach California factory for a cheap $16M

https://www.ien.com/video/video/2286288 ... at-auction

I bet this new facility might help them in manufacturing their next-generation Archimedes engine (oxygen-rich staged combustion, methane-lox) for their planned Neutron reusable launch vehicle.

It was actually India's announcement of SSLV which convinced CEO Peter Beck that he had to go for a larger & more reusable launch vehicle, because he realized that SSLV would put all smallsat launchers under pressure.

(I bought their stock at ~$7, but it continued to drop below $4, now it's finally starting to come back up again, as their quarterly earnings steadily improve and bring them toward the breakeven mark.)
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

There's some company called Hyperganic, whose goal is to use software algorithms to design products which are manufacturable through 3D printing.

Look at this Aerospike Engine created by their software -- it looks alien and organic -- like something from science fiction:





That last video also showed an injector for a rocket engine combustion chamber. Here's how it's manufactured:



jump to 8:55



Why can't we design our Kaveri engine in this way?
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

north korea satellite launch fails

sanman
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

UAP = Unidentified Anomalous Phenomena

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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

Shcramjet = Shock-induced Combustion Ramjet

Apparently, it's another newer type of hypersonic air-breathing engine that may be able to exceed the scramjet (supersonic combustion ramjet)
It's also called the "Oblique Detonation Wave Engine" (ODWE)

Is there any possibility we might try to develop something like this in the future, for SSTO?

https://en.wikipedia.org/wiki/Shcramjet
A shcramjet engine is similar to a scramjet engine; however, unlike the diffusive mode of combustion in a scramjet engine, shcramjet engine combustion takes place across a thin region of standing oblique shock and/or detonation waves stabilized over a wedge, blunt body, etc. Since combustion is confined to a narrow region across the igniting wave, the combustor length in a shcramjet can be significantly shorter than the scramjet, which requires a lengthy combustor for complete fuel-air mixing and combustion. Also, the shcramjet is believed to have a better overall propulsive performance than the scramjet at higher Mach numbers, especially above Mach 12. Recent researches have stipulated that shcramjet, alongside its other airbreathing variants, can act as an efficient high-speed vehicle propulsion system for SSTO flights.[5] These potential advantages have attracted substantial research on propulsive applications, as well as on the fundamental physical phenomena.[6]

http://fullafterburner.weebly.com/next- ... /shcramjet
An alternate hypersonic air breathing propulsion concept to the scramjet is the shock-induced combustion ramjet (shcramjet) also called Oblique Detonation Wave Engine (ODWE), or simply referred to as Shock-Ramjet Engine) is a new concept in air breathing ramjet engines, proposed to be used for hypersonic, as well as, single-stage-to-orbit (SSTO) propulsion applications. While scramjet concepts rely on the diffusive burning of injected fuel, the shcramjet concept aims to avoid a long combustion chamber by injecting the fuel in the inlet of the vehicle and burning the fuel/air mixture through a shock wave. This reduces the weight of the engine (which directly leads to substantial reduction in overall vehicle weight of a hypersonic wave rider design) and takes advantage of the typically long inlets found at hyper velocities. Thus shcramjets are more efficient than scram jet. Also, the shcramjet is believed to have a better overall propulsive performance than the scramjet at higher Mach numbers, especially above Mach 12. Recent researches have stipulated that air breathing engines such as scramjets and shcramjets provide a more efficient high-speed vehicle propulsion system than rocket engines. These potential advantages of shcramjet have recently attracted substantial efforts into their research all around the world.
Image



sanman
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

This site is focused on giving a foreign perspective on China's space program

Here they talk about Chinese efforts at building reusable rockets:

sanman
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »



I wonder how the hypoxia incident could have happened? Did somebody open a window/hatch or something?
Pratyush
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Re: International Aerospace Discussion - Jan 2018

Post by Pratyush »

The cabin air-conditioning system could have malfunctioned.

I seem to recall a similar incident about 25 years ago. In which a pvt jet had passed out passengers and crashed after running out of fuel.

Wiki link of the crash below.

https://en.wikipedia.org/wiki/1999_Sout ... rjet_crash
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Re: International Aerospace Discussion - Jan 2018

Post by NRao »

sanman wrote:
I wonder how the hypoxia incident could have happened? Did somebody open a window/hatch or something?
It happens when:

1) The plane's oxygen-generating system fails, and

2) The pilot is unable to get to the supplementary oxygen (mask) (oxygen kept in tanks/like just for such emergencies). And, if the pilot cannot get oxygen no one else can, since the pilot is the one to activate the supplementary system in the plane for others
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

Rocket Lab is likely to become the next best private launcher after SpaceX - although design and manufacture of space systems is still the majority of their business revenue.

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Re: International Aerospace Discussion - Jan 2018

Post by Pratyush »

I don't know where to put it. So I am putting it in the jet engine thread. As the engine is an extremely important part of the equation for hypersonic air breathing vehicles.

This is a discussion about a startup called Hermeus. Along with the engeneering development efforts being conducted by it.

It appears that the efforts can result in a ramjet for upto mach 6 applications. Using a hybrid approach of a conventional engine for getting the object going and then using that engine as a stepping stone for mach 3 and above.

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Re: International Aerospace Discussion - Jan 2018

Post by Mollick.R »

Why Japan's Moon Lander Crashed Due to An Unbelievable Computer Bug. Good one......

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Re: International Aerospace Discussion - Jan 2018

Post by Rakesh »

The Minister of the Armed Forces confirms the Rafale F5 and the future combat drone for the AAE
https://air-cosmos.com/article/le-minis ... -aae-65181
09 June 2023

For the Minister of the Armed Forces, the Rafale brought to the F5 standard will have to be put into service by 2030
https://www.opex360.com/2023/06/08/pour ... izon-2030/
08 June 2023

The Rafale F5 will be equipped with the "POD TR", which will combine the capabilities of the TALIOS and RECO NG nacelles
https://www.opex360.com/2023/06/10/le-r ... t-reco-ng/
10 June 2023

The Ministry of the Armed Forces wants to co-develop the Rafale F5 with the “Club Rafale” for 2030
https://meta-defense.fr/2023/06/08/le-m ... pour-2030/
08 June 2023
Indeed, to develop the new aircraft, and finance them, the Minister intends to solicit "Club Rafale", that is to say the operators present (Egypt, Qatar, India, Greece) and to come (Indonesia, Croatia, United Arab Emirates United) of the device, to participate in this critical evolution of the program.
So the French are looking to international Rafale customers to fund the development of the F5 variant. The French are truly wily! :lol:
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Re: International Aerospace Discussion - Jan 2018

Post by sanman »

del'd
Last edited by sanman on 14 Jun 2023 12:41, edited 1 time in total.
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