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Author Topic: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program  (Read 195855 times)

Offline VTOLicious

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #930 on: January 16, 2018, 03:13:39 pm »
A dedicated carrier aircraft without folding wings?  :o
Rafale M does without folding wings.

 The exception proofs the rule  ;)

Offline coanda

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #931 on: January 17, 2018, 02:53:41 pm »
Quote
The low aft perspective view shows that in fact the control surface edge goes through the bump...
...I still don't think the leading edge has any aft sweep.

Imho the black line is a cable leading to strain gauges, not uncommon on prototypes. However, without further Information/pics it's hard to tell what's the planform of the wings and what the mysterious bulges are for.

Quote
I also doubt that this has folding wings.

A dedicated carrier aircraft without folding wings?  :o

1. Ok, fair enough.

2. I said this aircraft, as in this airframe, is unlikely to have wing fold.

Offline SpudmanWP

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #932 on: January 17, 2018, 03:40:13 pm »
I'd say that it has to fold given that a 60+ foot wingspan will make moving it around below decks a massive pain.

How big are the hanger doors?
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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #933 on: January 17, 2018, 04:46:57 pm »
I'd say that it has to fold given that a 60+ foot wingspan will make moving it around below decks a massive pain.

How big are the hanger doors?

I think the point was this *prototype* might not have folding wings, even if the real thing does.
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Offline Airplane

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #934 on: January 17, 2018, 05:43:55 pm »
I think the entire wing will fold like an old F9F Panther that folded where the wing met the intakes.
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Offline sferrin

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #935 on: January 17, 2018, 08:31:20 pm »
I think the entire wing will fold like an old F9F Panther that folded where the wing met the intakes.

That would make for a pretty tall aircraft I'd think.
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Offline Flyaway

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #936 on: February 13, 2018, 11:52:35 pm »

Offline VTOLicious

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #937 on: February 14, 2018, 02:53:06 am »
Here's Why General Atomics Teamed Up With Boeing For The MQ-25 Tanker Drone Tender
http://www.thedrive.com/the-war-zone/18437/heres-why-general-atomics-teamed-up-with-boeing-for-the-mq-25-tanker-drone-tender

"...This follows the service dropping something of a bombshell in its latest budget request, stating that, at best, it will only buy four of the Stingrays over the next six years and that a possible larger buy of 68 will only come some time after that, if it happens at all..."

 :o

Offline VTOLicious

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #938 on: February 14, 2018, 04:28:59 am »
The 15000 lb might be doable if the capacity of the Buddy Store + another fuel tank is considered:

Internal capacity "give": 1440 gal (5451 l) (corresponds to 3x 480 gal tanks )
External capacity "give": 1x Buddy Store 300 gal (1136 l) + 1x FuelTank 480 gal (1817 l) = 780 gal (2953 l)

Total fuel "give": 2220gal (8404 l), JP5 @ 0.81 kg/l = 6807kg (15007 lb)

EDIT: In case of the X-47B, 15000lb is exactly half of its useful load:

Empty weight: 14,000 lb (6,350 kg)
Max. takeoff weight: 44,567 lb (20,215 kg)

Useful Load: 30567 lb (13865 kg)

"...On Feb. 12, 2018, General Atomics revealed the partnership with Boeing in a press release that also named a half dozen other companies that it would be working with on its MQ-25 bid. Pratt & Whitney will supply its PW815 high bypass turbofan engine,..."

Now that we know what kind of engine is being used for the MQ-25, it becomes evident that it will have an MTOM that's very similar to the X-47B.

X-47B, 1x Pratt & Whitney F100-220U:    16000 lbf (71,17 kN)
MQ-25, 1x Pratt & Whitney PW815GA:     15680 lbf (69,75 kN)

Offline sferrin

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #939 on: February 14, 2018, 04:57:48 am »
Here's Why General Atomics Teamed Up With Boeing For The MQ-25 Tanker Drone Tender
http://www.thedrive.com/the-war-zone/18437/heres-why-general-atomics-teamed-up-with-boeing-for-the-mq-25-tanker-drone-tender

"...This follows the service dropping something of a bombshell in its latest budget request, stating that, at best, it will only buy four of the Stingrays over the next six years and that a possible larger buy of 68 will only come some time after that, if it happens at all..."

 :o

Meanwhile the X-47Bs collect dust, if they haven't been scrapped.

"DARPA Hard"  It ain't what it use to be.

Offline flateric

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #940 on: February 14, 2018, 05:16:31 am »
What makes you think that they could be scrapped?
Navy was going to donate them to museums but then changed mind and kept for future testing.
One of them was last seen in August, 17 with external fuel tanks in CBARS related tests.

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stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline sferrin

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #941 on: February 14, 2018, 05:34:33 am »
What makes you think that they could be scrapped?
Navy was going to donate them to museums but then changed mind and kept for future testing.
One of them was last seen in August, 17 with external fuel tanks in CBARS related tests.

It would be par for the course.
"DARPA Hard"  It ain't what it use to be.

Offline DrRansom

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #942 on: February 14, 2018, 08:56:35 am »
"...This follows the service dropping something of a bombshell in its latest budget request, stating that, at best, it will only buy four of the Stingrays over the next six years and that a possible larger buy of 68 will only come some time after that, if it happens at all..."

 :o

Why even have the program if you're not going to buy anything?

Offline bring_it_on

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #943 on: February 14, 2018, 09:08:44 am »
Quote
Why even have the program if you're not going to buy anything?

Plans are to buy 4 aircraft in the FYDP to support development and operational testing (most probably). Additional buy would be outside of the FYDP and therefore not included in a chart.
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Offline jsport

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Re: US Navy’s UCLASS / CBARS / MQ-XX / MQ-25 Stingray Program
« Reply #944 on: February 14, 2018, 09:19:09 am »
"...This follows the service dropping something of a bombshell in its latest budget request, stating that, at best, it will only buy four of the Stingrays over the next six years and that a possible larger buy of 68 will only come some time after that, if it happens at all..."

 :o

Why even have the program if you're not going to buy anything?
Glade research continues as even though basic avionics and sensors are common and largely mature. Such an important capability as long range, high performance potentially UCRAS craft takes time. It is too  bad a tactical vtol Close Air Support UCRAS program doesn't have the same support.  Of course the candidate VTOLs out there are not worth investing in.