DARPA's new X-76

Posted by newer_vienna |3 hours ago |58 comments

mrDmrTmrJ 2 hours ago[1 more]

To be clear, this is not a power-point program but a continuation of a long-standing design work with Bell.

Two articles that cover this in depth are: 1. Revised Fold-Away Rotor Aircraft Concepts Emerge From Special Operations X-Plane Program. December 2024: https://www.twz.com/air/revised-fold-away-rotor-aircraft-con...

2. Bell’s Plan To Finally Realize A Rotorcraft That Flies Like A Jet But Hovers Like A Helicopter. September 2021: https://www.twz.com/41997/bells-plan-to-finally-realize-a-ro...

The second article covers decades of prior wind tunnel testing on the folding rotor concept.

dmbche an hour ago

Design remings me of something...

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

ocdtrekkie 9 minutes ago

I'm confident with the stellar service and safety record of the V-22 that an even more complex tiltrotor will be a standout success for the military.

radicalethics an hour ago[3 more]

I wonder what the motivation behind this is. Tactically, why ever show your latest weapon? What is the strategic purpose of this? It's like if I message my opponent in SC2 and tell them exactly what I'm going to tech to. That's ... insane right? Why would anyone do that?

porphyra 2 hours ago

Cool, I guess this should be able to hover in much more "austere" environments than the F-35B STOVL and the Harrier Jet. Tiltrotor with folding rotor blades sounds very mechanically complex and challenging though.

PowerElectronix 2 hours ago[2 more]

It looks like a maintenance nightmare with those clutches to decouple the blades and the mechanisms to have them folded during cruising. Does it even improve substantially in anh metric over the V280 to put money into it?

kuprel an hour ago

From the image it doesn't look balanced for VTOL when the propellors are vertical. Also are the jets enabled during VTOL?

ceejayoz 2 hours ago[2 more]

So it's an Osprey with a jet in the back?

bilsbie 2 hours ago[1 more]

So it has jet engines that blades unfold and attach to during takeoff and landing? Why not always use the blades?

bilsbie 2 hours ago

I’d go for simplicity and do a tail lander.

trelliumD an hour ago[1 more]

that already exists in the form of Saab Gripen :)

sandworm101 an hour ago

Different engines for different phases of flight? It has been tried many times and never really works. Such craft can be made to fly, but never well. The answer has to come from using one set to power all phases.

Id be interested in seeing a turboprop that can transition to a turbofan/jet once the prop is folded away. The f-35 was a step in this direction.

dash2 2 hours ago[5 more]

“ With SPRINT, we're not just building an X-plane; we're building options”. Found the guy who couldn’t be bothered to write his own press release…

idontwantthis 2 hours ago[1 more]

Isn't this need already met by the Bell V280 that the army already selected for it's Blackhawk replacement? What is the big innovation they are going for here?

crimsoneer an hour ago

Someone has played the new Deus Ex games

phplovesong 2 hours ago[2 more]

The swedish gripen can do mach2 (2300km/h) and does not need a traditional runway (500 meters of something "flat enough" will do). I assume its way cheaper than something like this.

greatgib 2 hours ago[3 more]

I can't access darpa.mil. Was it slashdotted because of the article being posted here, or now it is unavailable outside of US?

HumblyTossed an hour ago[2 more]

Hmmm... that just looks like problems. It's a lot of mechanical parts that always have to work correctly.

thatmf 2 hours ago[1 more]

[flagged]

rluna828 an hour ago[1 more]

I wonder is Iran would have gone different if we had captured the Ayatollah instead of killing him. A stealth drop ship like this would have allowed that to happen. The reason why regimes are more likely to negotiate when you capture their leaders is because you might release them. (not a good day for the usurper.)