Current US hypersonic weapons projects. (General)

Not sure. They are looking for a percentage of consecutive fully successful tests. Hence, a single, couple of low single digit series of successes might simply not reach the threshold they have set (let´s say 9 or 10 out of 10).

“We’ve got to make sure this capability works. If the decision is made to implement this, it’s for real, serious reasons, strategic-level reasons, and we need it to work every time,” Rasch said.
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TomcatViP said:
Not sure. They are looking for a percentage of consecutive fully successful tests. Hence, a single, couple of low single digit series of successes might simply not reach the threshold they have set (let´s say 9 or 10 out of 10).
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The quote I posted says there has never been a successful end to end test.
 
The BOLT-1B hypersonic vehicle has had a successful test-flight, from Defense Updates:


US Air Force’s hypersonic test vehicle BOLT-1B has conducted its successful flight. The flight was carried out over Norway on September 2.
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The test vehicle lifted off from the Andøya Space Sub-Orbital launch site at 11:41:01 local time and reached an apogee of 157 miles (254 kilometers) before safely splashing down inside the impact and dispersion area.As planned, the test concluded with BOLT-1B impacting the ocean approximately 115 miles (185 kilometers) offshore.
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BOLT-1B completed all test objectives, according to reports. The experimental vehicle traveled over the Norwegian Sea at Mach 7.2 and provided a stream ofimportant data on the physics of airflow at hypersonic speeds.
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The project is coordinated by the Air Force Office Scientific Research from the United States and is carried out by Johns Hopkins Applied Physics Laboratory (APL), the Air Force Research Laboratory Aerospace Systems Directorate (AFRL/RQ), and the German Aerospace Center (DLR).
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In this video, Defense Updates analyzes why the successful test of the BOLT-1B hypersonic vehicle is awesome news for the U.S. ?
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#defenseupdates #hypersonicmissile #usmilitary
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Chapters:
00:11 INTRODUCTION
02:20 HYPERSONIC WEAPON
04:18 AFRL’s INSIGHTS
05:59 AID IN HYPERSONIC WEAPON DEVELOPMENT
06:52 ANALYSIS
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TAOG said:
Update MPBD air launch hypersonic missile info:

1. Raytheon still seek program Director.

Picture 1 : post on 2022
Picture 2: post on 2023/8
Picture 3: post on 2024/6

2. MPBD consists of two stage solid rocket ( picture 4)

3. Aerojet Rocketdyne is also the sub contractor, and the MPBD has conduct 2 static test firing (picture 4-6).

4.NG is still develeloping second stage, and mention hypersonic again. ( Picture 7)

---------------------

It seems like A. Rocketdyne is developing the first stage and NG is for 2nd stage, Raytheon is main conctrator integrate AUR.
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Not sure this is for HACM or MPBD.

But " long range" seems not refer to HACM?

Raytheon, Northrop Partner To Test Long-Range Hypersonic Rocket | Aviation Week Network

A Raytheon/Northrop Grumman team tested an advanced solid rocket motor featuring a propellant grain geometry optimized for long-range, hypersonic missiles.
aviationweek.com aviationweek.com

A Raytheon/Northrop Grumman team tested an advanced solid rocket motor featuring a propellant grain geometry optimized for long-range, hypersonic missiles. The test at Northrop’s Alleghany Ballistics Laboratory in West Virginia validated models and simulations of the new rocket motor, the companies...
 
The concept of wired
end burners is to increase burning rates along the wire to develop larger burn areas which
produce higher thrust over a shorter duration. For this research a model is developed to
add wires, with or without discontinuities, to an end burner design and to provide
performance results such as thrust, chamber pressure, mass flow, and impulse.
{...]
The results in this
research show small gaps have negligible impact on performance and carbon nanotub
fibers can theoretically provide up to 25% more total impulse than star and internal tube
grains while still producing comparable thrust over similar action times.
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To know more about wired-end burning:

 
www.defense.gov

Contracts for October 2, 2024

Today's Defense Department contracts valued at $7.5 million or more are now live on Defense.gov.
www.defense.gov

Oct. 2, 2024​


Raytheon Co., Tucson, Arizona, was awarded a $73,000,000, cost-plus-fixed-fee delivery order under the Enterprise-Wide Agile Acquisition contract (FA8656-21-D-A004) for hypersonic attack cruise missile manufacturing capacity enhancement. Work will be performed in Tucson, Arizona, and is expected to be completed by Sept. 30, 2028. Fiscal 2024 research, development, test, and evaluation funds in the amount of $20,000,000 are being obligated at the time of award. The Air Force Life Cycle Management Center, Eglin Air Force Base, Florida, is the contracting activity (FA8656-25-F-B002).
 
bobbymike said:
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Bill Sweetman, a former Aviation Week journalist and a senior analyst with Northrop, has written a very interesting article on hypersonic missiles. He pointed out that because of the serious problems of operating in the atmosphere for long time periods at hypersonic speeds (Mach 5 or faster) the Navy hypersonic program reportedly results in a missile that weighs “7400kg to deliver a small 225 kg payload over 3000 km.” He noted that it is expected to cost $50 million per round and limits the number of ships that can carry them to platforms that are few in number and very expensive. He asks “how important is it to exceed Mach 5, compared with speeds of Mach 3.5 to 4 that can be attained with less risky ramjets?” Sweetman said that a 2013 Air Force study concluded that “…with modest stealth measures, a high-supersonic vehicle is as survivable as a hypersonic one. Moreover, the combination of high Mach and reduced radar cross section was demonstrated more than 60 years ago.”
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Hmmmm...
 
CWilkinson said:
The U.S. Department of Defense selected Hypersonix Launch Systems, an Australian aerospace company, to develop a high-speed aircraft that can test hypersonic technologies.
www.c4isrnet.com

Pentagon chooses Australian firm to build hypersonic test aircraft

The aircraft, which will support efforts to increase the cadence of hypersonic flight testing, is scheduled to fly for the first time in early 2024.
www.c4isrnet.com www.c4isrnet.com
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Nice bit on the Hypersonix Dart AE here:

View: https://www.youtube.com/watch?v=pKJS0v6VqS4&t=700s
 

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