So you are refusing to answer the question? Are you saying that the Yemen incident was the result of the radar cross section of the MV-22 involved?
jsport said:Sounds like alotta Texas spin (from a particular city in fact) pardon the pun.
jsport said:No 'Senior Citizen' proposal included an open prop design.
GTX said:jsport said:Sounds like alotta Texas spin (from a particular city in fact) pardon the pun.
Huh??
jsport said:No 'Senior Citizen' proposal included an open prop design.
And that has what to do with this?
As Bell Helicopter is moving forward with the Osprey integration in the US Navy under the Carrier Onboard Delivery program, the Fort-Worth-based rotorcraft manufacturer started preliminary studies on a naval variants of its future V-280 Valor tiltrotor aircraft. Navy Recognition learned during Sea-Air-Space 2016. A company representative stressed that no Navy requirements have been issued yet however.
A modular platform, the naval version of the Valor will be able to perform wide range of missions: anti-submarine warfare, surface warfare, airborne mine warfare, utility and logistic missions, personnel recovery, counter fast attack craft and fast inshore attack craft. But according to Bell Helicopter, the Valor naval variant will come in two different versions : one operating from the DDG vessels and one utility variant for the CVN.
The DDG variant will be shortened by a few inches in order to allow the helicopter to fit in destroyer's hangar. This version will have an external payload capability of 8,000 lbs and will accomodate up to eight fully-equiped troops. The DDG compatible V-280 will have an operational radius of up to 2100 nm thanks to inflight refuelling capability.
The CVN compatible variant will keep the same airframe than the US Army and will be primarly dedicated to utility and logistic missions. Cargo hooks will give it a lift capacity to carry a 10,500 lb, while the cabin will carry up to 12 troops.
Both variants will be designed for a cruising speed of 520 km/h and a 25,000 ft maximum ceiling.
The Bell V-280 Valor is a third-generation tilt-rotor concept being developed by Bell Helicopter and several industrial partners for the United States Army's Future Vertical Lift (FVL) program. In June 2015, Bell Helicopter's subcontractor Spirit AeroSystems began assembly of the composite fuselage for the first prototype V-280 Valor, which was delivered in September 2015.
yasotay said:Likely traded engine simplicity for rotational complexity. Can't say I am particular to all that "kit" hanging out in the elements. Of course it is only a demonstrator.
TomcatViP said:it's way more simple.
The spiral [helicoidal] bevel gear ensure that only a minimal portion of the drive system rotates. The drive shaft that connect both engine is static and its position can be arranged during the design to be at the most suited position. The absence of rotations of the entire engine facilitate the conception and preventive maintenance, lowering the overall cost and weight while increasing safety. Engine nacelles can be made more compact (no need for balancing weights). Think that for example your oil pipe network is mostly static. If you need to get electrical power out of those engines, it became even more easy and efficient by reducing the amount of mass that have to be rotated. etc... etc...
I will not be surprised if one day, Bell offer an upgrade to the 22 that brings it to a similar concept.
Yeah seeing some of what's being said lately about future V-22 development, and given the exhaust heat issues of the Osprey, I won't be thoroughly shocked if a fixed-nacelle version is offered.TomcatViP said:I will not be surprised if one day, Bell offer an upgrade to the 22 that brings it to a similar concept.
Moose said:Yeah seeing some of what's being said lately about future V-22 development, and given the exhaust heat issues of the Osprey, I won't be thoroughly shocked if a fixed-nacelle version is offered.TomcatViP said:I will not be surprised if one day, Bell offer an upgrade to the 22 that brings it to a similar concept.
Interesting to see Bell has obscured/blacked-out in the released photos the inner bits exposed by the prop-rotor in the vertical position, as shown by the photo (presumably taken "over the fence") posted by Deino earlier in the thread (https://www.secretprojects.co.uk/forum/index.php/topic,19036.msg313559.html#msg313559).Triton said:Source:
http://www.businessinsider.com/here-are-the-first-images-of-the-armys-new-futuristic-helicopter-2017-9
Boxman said:Interesting to see Bell has obscured/blacked-out in the released photos the inner bits exposed by the prop-rotor in the vertical position, as shown by the photo (presumably taken "over the fence") posted by Deino earlier in the thread (https://www.secretprojects.co.uk/forum/index.php/topic,19036.msg313559.html#msg313559).Triton said:Source:
http://www.businessinsider.com/here-are-the-first-images-of-the-armys-new-futuristic-helicopter-2017-9
"To pay for the earlier start, Bell program manager Chris Gehler told reporters here yesterday, the Army should cancel its $10 billion Improved Turbine Engine Program (ITEP), which aims to boost existing helicopters’ power by 50 percent and reallocate the money to the all-new FVL."
yasotay said:Bell has stated that simplification is a key component of the aircraft design.
FighterJock said:Hopefully that means less accidents than the V-22 Osprey in the long run.
fredymac said:FighterJock said:Hopefully that means less accidents than the V-22 Osprey in the long run.
Pilot error is hard to fix. Some of the early V-22 crashes were not from hardware failures. Ironically, a high performance platform can encourage risky maneuvers. I would not be surprised if another vortex ring type event occurs unless program managers make a point of reigning in experimentation with maximum flight capabilities.
yasotay said:On a much brighter note, the V-280 got to 100% RPM this last Saturday. Video will show up soon I imagine.