Though not much is known about the aircraft, FAA documents show the S-100 has two engines, 14 seats and a lift-weight class of 20,000 kg or over. Sikorsky says that the S-97 Raider has a cruising speed of 253 mph (407 km/h, 220 kn), which is more than double the speed of conventional helicopters, and pulls three G's in the turns for. Both helicopters, Raider and Defiant, have similar design elements: two counter-rotating top rotors, and a propeller in back. Missions Armed reconnaissance Length 37ft Width 16ft Rotor Diameter 34ft Speed 220k Expand To replace the Apache gunships, an aircraft needs to fly low and slow over the battlefield, ducking behind cover when enemy anti-aircraft units appear, then popping up again to fire guns and missiles. The X2 demonstrator will feature a coaxial design (two rotors on . The same design approach was also considered for a larger AAPC, Aerial Armored Personnel Carrier, carrying twelve troops within the armored fuselage. Controls: Synchropters The S-68 was a conceptual design for a small commercial aircraft using S-58T components. The basic airframes there, the cockpit doors are installed, the weapons bay doors are installed, the landing gear is installed and serviced, [and] many of the electrical and hydraulic subsystems are fully installed and going through their acceptance test procedures., In the photo above, a few details stand out. On the ground, the top rotors can be folded back, allowing it to be stored and transported easily. Sikorsky-Boeing SB>1 Defiant. We have flown more than 1,200 test flight hours and the CH-53K has achieved key milestones in 2018 such as high altitude, hot temperature,and degraded visual environment flights and we will continue to accomplish test points demonstrating this aircrafts unmatched capabilities. At the helicopters tail will also someday be a propeller that can help the aircraft accelerate or decelerate. Whichever helicopter becomes the Armys choice for the FARA role will be powered by a single engine, which is General Electrics T901. While the Armys currently leading the most near-term parts of Future Vertical Lift, the overwhelming bulk of Army rotorcraft requirements involve transport, where FVLs virtues dont matter much. The CFTD replicates the functionality, flight characteristics, mission profiles and unmatched capabilities of the CH-53K helicopter. Sikorsky's SB Defiant, which recently took a demo flight at a Sikorsky range in West Palm Beach Florida before the Army's Chief of Staff, has reportedly hit speeds of 250 knots, more than twice. Sikorsky stated working on the concept in 1964. The upper and lower counter-rotating gear 62 u, 621 drive a respective upper and lower rotor shaft 64 u, 641 which rotates the counter-rotating rotor systems 28 a, 28 b about an axis R. Input power is transmitted from the powerplants 22 through the driveshafts 54 A, 54 B to the upper and lower counter-rotating gear 62 u, 621 and the drive shaft 38. Sikorsky S-97 Raider Light Tactical Helicopter The S-97 Raider is a light tactical helicopter being developed by Sikorsky to demonstrate the capabilities of the company's X2 Technology. The rotor diameter would grow to 40 feet, the same size as the ABC rotor being tested at the time in the NASA Ames wind tunnel. Bring back the COMANCHE ! The Sikorsky-Boeing tech demonstrator SB-1 Defiant first took flight in March 2019 and leverages Sikorskys X2 technology with a rigid compound rotor and pusher prop. Want CNET to notify you of price drops and the latest stories? And lifting payload is a biggie for the mission profile. | Up to twice as fast as a regular helicopter. This human and technical feat has given rise to a family of aircraft that have been entered into the history of aviation. Sikorsky's technology puts two main rotors on top of each other, rotating in opposite directions, which balances out the lift profile on either side and allows the craft to fly much faster - up. ?Throughout2007, the aircraft made excellent additional build and subsystem test progress,re-entering vehicle ground testing in November 2007,? You dont want to wait for your rotors to tilt from vertical to horizontal flight mode like a V-22 or V-280, Van Buiten argued. American Helicopter Society paper Fifty Years of Sikorsky High Speed Concepts, Arthur W. Linden. The downside of a tilt-rotor is the mechanical complexity and weight of the mechanisms needed to do the tilting as well as the need to switch modes in flight. Both companies agree that the Bell V-280 Valor, which has wings, is more fuel-efficient in long-range flight than the Sikorsky-Boeing SB>1 Defiant, which just has rotors. At higher speeds, moreover, helicopters run into a problem called retreating blade stall. Vertipedia provides high-quality information on current and historical aircraft, as well as notable milestones in the history of vertical flight and biographical information on the people who made them happen. The fastest Army helicopter in widespread service, the CH-47F Chinook, maxes out at about 170 knots, which is 195 miles per hour, and has an effective reach (mission radius) of 200 nautical miles, or 230 statute miles. This used two very rigid counter-rotating rotors, allowing rotor lift at high speeds to migrate off the rotor centerline to the advancing sides of the rotor discs, thus eliminating retreating blade stall which limits the speed of conventional helicopters. He also has a Masters Degree in Comparative Literature from Columbia University. The turning power comes not from a rotating engine in the helicopter body but from the roto Continue Reading Sponsored by TruHeight Still looking for TruHeight Gummies? Airwolf would still eat it for breakfast. Theyve learned a lot since they built the V-22, said V-280 program manager Chris Gehler, and theyve radically upgraded the low-speed handling qualities, he told reporters in Amarillo. Here's What You Need To Remember:The new aircraft will employ several measures designed to make it quieter, including, most notably, a counter-rotating rotor that muffles the sound of the first. This had been used successfully on most coaxial helicopters in the past. propellers,a significant difference in design from helicopters of the past six decades. The company plans to demonstrate the aircraft's capabilities to the US military beginning in 2015. The aircraft has been assigned the registration N100FV. The US Army has not yet made any formal announcement about a long-term replacement for the Kiowa. Retreating blade stall can be delayed or lessened in case of coaxial helicopter configurations. efficiency, and safety of air or space vehicles, the value of which has been thoroughly demonstrated by actual use during the preceding year.. They will be coming soon I'd imagine fb. The XH-59B program was not funded. The S-70A is Sikorsky's designation for Black Hawk models produced for export. Vertipedia provides high-quality information on current and historical aircraft, as well as notable milestones in the history of vertical flight and biographical information on the people who made them happen. The SB>1 Defiant uses a pusher prop at the rear, along with active rudders and elevators. About the develemental phase when you already have a proven concept, insane. With these rigid rotors, the lack of a tail rotor, and the use of a separate auxiliary propulsion system, the controls were almost perfectly orthogonal. Some obvious design differences present themselves between the two aircraft prototypes: Bells aircraft employs a single main rotor up top, and a tandem cockpit, meaning the two pilots sit with one person in front of the other, as opposed to side-by-side. He writes occasionally, on topics from GPS to James Bond. What's even more unusual element is the pusher rotor at the rear. Nevertheless, the progress of the VS-300 earned Sikorsky Aircraft a . Sikorsky first flew its contra-rotating main rotor and tail-mounted pusher prop-equipped X2 technology demonstrator in 2008, eventually achieving a speed of 253kt (468km/h) in 2011. It's not an everyday look for a helicopter, to say the least. Tail Rotors. Unlike most helicopters, Sikorskys bid uses two counter-rotating coaxial main rotors and a pusher propeller that the company says will allow for quicker acceleration and deceleration. While the Raider X is part of the FARA competition, Sikorskys Defiant X is part of another Army competition called FLRAA, which stands for Future Long-Range Assault Aircraft. First, like some conventional helicopters, especially Russian designs, a compound helicopter has two coaxial rotors on top that rotate in opposite directions (counter-rotation). Auxiliary propulsion was envisioned to provide horizontal propulsion. Join PopSci+ to read sciences greatest stories. "Sikorsky will begin ground testing shortly and is on track for first flight this year," Steve Engebretson, Sikorsky's director of advanced military programs, said in an emailed statement. Military Potential of the ABC, George Price, American Helicopter Society Vertiflight magazine, November/December, 1982. The tail contacted the ground first and the aircraft rolled over until the blades struck the ground. The abstract of the Army final report summarizes these conclusions: NOE [nap of the earth] flight handling qualities revealed the XH-59A is capable of the intricate, demanding maneuvers required by the tactical NOE environment. These useful machines handle everything from tourism to search and rescue. Counter rotating props certainly aren't new. ?This couldbe a ?game changer? Concurrently, Sikorsky was in the early stages of developing the Advancing Blade Concept (ABC) for extending the speed range of helicopters. Heres how it works. It's not every day you see a helicopter that looks like this. On top of the helicopter is another component thats 3D-printed, as a stand-in for what will be the hubs for the top rotors and the gearbox. The transmission used a simple compound planetary gearing arrangement to provide two counter-rotation output shafts and a high reduction ratio. Sikorsky Aircraft Corp. Parent type: No type defined Aircraft status: No longer flying . Our Multi-Domain Operations/Joint All-Domain Operations solutions provide a complete picture of the battlespace and empowers warfighters to quickly make decisions that drive action. SikorskyAircraft, has been consulting with helicopter operators to determine how X2Technology aircraft would benefit their business at a price they can afford. Join our Space Forums to keep talking space on the latest missions, night sky and more! The testing of the full-scale ABC rotor system in the NASA Ames wind tunnel in 1970 was very successful, and the Army and the company decided that a high-speed research aircraft, evaluating the ABCs speed potential, was more productive. Igor Sikorskys predictions for air travel in general and for helicopters in particular have been largely realized or surpassed. 80 years ago, Russian-born inventor-engineer and pilot Igor Sikorsky made the first flight of his self-designed single-rotor helicopter, the VS-300. Nelson Hyde Chick - this will likely be used for more then just war. Boeing-Sikorsky RAH-66 Comanche. This design delivers that, plus incredible speed. The Sikorsky-Boeing SB>1 DEFIANT helicopter achieved first flight March 21, 2019. Photo: Sikorsky Aircraft Corp. To paraphrase helicopter pioneer Igor Sikorsky: If you're in trouble . It was one of a number of concepts initially considered for the UTTAS (later Black Hawk). It also required titanium rather than aluminum to get the strength and modulus necessary for a practical blade design. The rotors of the S-97 are designed based on the "Advancing Blade Concept"only the blades moving forward are pitched, while retreating blades are "unloaded" to reduce drag. ?Weinitiated X2 Technology convinced that the most productive and flexiblehelicopter is a helicopter which is capable of a significant increase in speed,?said Stephen Finger, then-president of Sikorsky Aircraft. Sikorsky Aircraft's coaxial X2 Technology demonstrator has achieved the 250-knot (287.69 mph) milestone that was established as the goal of the craft from its inception. The S-61 Sikorsky series began development in 1950 and went into service in 1961. Do not sell my information, IAI eyes Heron MK 2 for Aussie armed drone sale, US Army picks 5 companies to compete for RQ-7B Shadow replacement, Boeing awarded $1.2 billion for E-7A Wedgetail production deal, Despite Saudi statement, KSA not joining UK-led FCAS program at least not yet, All new Apache helicopters will have Australian components, Some F-35s will require engine hardware fix, Pratt exec says, BAE unwraps Strix VTOL strike drone with 800km range at Avalon, In the era of Great Power competition, state-of-the-art technologies are needed, Russia turning to N. Korea, Iran for more weapons ahead of spring offensive, NATO head warns, Sovereignty a vexing problem for Australian defense, Eye on exports, Lockheed Australia targets all domain AIR 6500, US State Department clears $500 million in anti-radiation missiles for Australia, Unmanned drones take too many humans to operate, says top Army aviator, Biggest-ever Avalon Air Show draws a dozen key US officials. Helicopter with counter-rotating coaxial rotors without cyclic variation of pitch. | In 1972, both Boeing and Sikorsky were contracted to develop prototypes for this new breed of combat helicopter. Their groundbreaking innovations in helicopter avionics gained the company international notoriety. Future US, Inc. Full 7th Floor, 130 West 42nd Street, The advancing blades are effectively going faster, relative to the air, because they add the helicopters forward movement to their own, so they generate more lift. If only we devoted as much time, money and resources to fixing the planet as we do to making systems to kill one another we might save the planet. Sikorsky and Boeing have been working on this high-speed, long-range, ultra-maneuverable military helicopter design for some time, and now they've released the first photos of what is expected to become a highly effective US Army utility helicopter sometime in the 2030s. Sikorsky, a Lockheed Martin company (NYSE:LMT), in Stratford, Connecticut, and Boeing Defense, Space & Security (NYSE:BA) in Berkeley, Missouri, are introducing the SB>1 DEFIANT helicopter designed to fly with advanced agility and maneuverability at twice the speed and range of current conventional helicopters. Its the Army that Bell and Sikorsky must convince. Sikorsky's candidate features coaxial top rotors: The two large rotors on top of the helicopter, which give it lift, spin in opposite directions, negating the need for a traditional tail rotor.. Sikorsky was experimenting with a compound helicopter, the S-61F/NH-3, using an S-61/H-3 airframe. 30 years experience at tech and consumer publications, print and online. The data and discussions lead us to believe the proposals were not consistently evaluated to deliver the best value in the interest of the Army, our soldiers and American taxpayers, Sikorsky said in a statement. The advancing blade concept had been shown in a textbook in the 1930s, but the structural requirements for the blades were well beyond the technology of the day. With this rotor configuration, the rotors capability to generate lift would not drop off with speed, or with altitude. The Army set up the Utility Tactical Transport Aircraft System (UTTAS) program to develop this new transport helicopter. The pilot inputted more and more forward cyclic to counter this, until the stick was on the forward stop and the aircraft was still nosing up. Sikorsky hopes that the sleek, speedy design of the S-97, unveiled Thursday, will win the favor of the US Army as a potential replacement for OH-58D Kiowa Warrior helicopter, an airframe whose history dates back to the Vietnam War era, and as an aerial platform for special operations units. That required changing how the rotors flap, improving materials, and, above all, increasing the size of the rotors relative to the aircraft. The blades were coned up at 3. That is a helicopter, not this bulky overly complexed strange concept idea worked into a "commercial" vehicle, New quantum state boosts material's conductivity by a billion percent, GE installs world's first spiral-welded wind turbine tower, BAE unveils the Strix, a fascinating, tail-sitting X-wing VTOL UAV. With the counter-rotating rotors, no tail rotor was required to react rotor torque. Sikorsky was unique in devoting his efforts to . Pitch change was accomplished with conventional stack bearings. categorized as rotary-wing aircraft ? Auxiliary propulsion flights were conducted from April 1978 to January 1981. Updated 4:55 pm to clarify Richard Aboulafias remarks on Army preferences. The first flight for that program is expected in 2017. Sikorsky and Boeing are protesting the Armys decision to award a lucrative defense contract to replace the services Black Hawk helicopters with a tiltrotor aircraft manufactured by Bell Textron. For example, flights between Bridgeport, Conn. and JFK Airport in New York City would be decreased from 40 minutes to 25 minutes.Also, X2 Technology medevachelicopters would be able to transport people in critical condition tohospitals in significantly less time, potentially saving lives. However, the direction chosen seems to depend on where the helicopter is designed and built. Continued operation in RF environments whether thats GPS denial or communications disruption is arguably the number-one requirement for overmatch against near peers. But all of these were two conventional rotors mounted in a coaxial counter-rotational configuration. As wecontinue to work to prove and mature the technologies that will allow the X2Technology Demonstrator to become a viable product, we are focused on testingits limits and finding out where this technology will take us," JeffreyPino, Sikorsky?s president, said recently. Second, to provide the raw forward thrust for fast flight, the back of the aircraft mounts a pusher propeller. And civilian uses are already being considered. Want the latest defense industry news? To overcome these shortcomings, in 1982 Sikorsky submitted an unsolicited proposal to the Army for extensive modification of the aircraft into the XH-59B configuration. Part 1 of a narrative series illustrating how Americas armed forces might use technology to accomplish their most demanding missions. It also negates the need for a regular tail rotor, as yaw can be managed using just the top rotors. At this point, the pilot has two choices: slow down or crash. (Each propeller may have an electric motor & electricity could be provided by a central gas turbine engine (that also provides extra forward thrust)!). Unlike most helicopters, Sikorsky's bid uses two counter-rotating coaxial main rotors and a pusher propeller that the company says will allow for quicker acceleration and deceleration. Design studies showed that four-bladed rotors would dramatically reduce the rotors vibratory characteristics. By the 1960s Sikorsky believed that technology had progressed to the point that a practical application of the concept was possible. Osborn previously served at the Pentagon as a Highly Qualified Expert with the Office of the Assistant Secretary of the ArmyAcquisition, Logistics & Technology. And while the two companies are going head-to-head in the FARA program, with the Raider X pitted against the 360 Invictus, they are also competing in the aforementioned FLRAA program, with the Defiant X up against the V-280 Valor. The rigid rotors provided high control power. The empennage was an inverted V to keep it under the rotor and minimize aircraft size. The V22 tilt-rotor uses counter-rotating proprotors in order to cancel out torque. The conclusion was that the control system gains were too low to cover all flight modes. Lockheed Sikorsky-Boeings SB Defiant has taken flight more recently than Textron-Bells 280 Valor, however both appear to be showing early promise. Born in Kiev, Ukraine, in 1889 to a family of physicians, Igor Sikorsky actually built his first helicopter at the age of 12. Take a look at the concept video below, or click through for a larger look at the photos released today. here for reprint permission. Whats visible is a simulated version of a system called the modular effects launcher, which someday could carry missiles, rockets, or other kinetic objects, like drones or other sensors. The following reference has great detail of information on the full ABC program, including manufacturing technology used, aircraft description, and ground and flight test results: American Helicopter Society paper The ABC Rotor A Historical Perspective, Robert K. Burgess. said Grant. These two ideas were combined into an aircraft with an armor fuselage and an ABC rotor system. Even worse, in autorotation the yaw control reversed direction. If FARA is about finding a next-gen armed scout helicopter, then FLRAA is all about choosing a larger, Black-Hawk-type helicopter. Although the proposed armor fuselage vehicles would not need the speed capability of the ABC, it was quickly recognized that the rugged ABC rotor head had benefits for ballistic tolerance. At low speeds, the difference between the advancing and retreating blades is negligible. There could be no flapping hinges; the rotors would have to be very stiff so that the rotors center of lift could migrate off the rotor centerline. The design team had never dealt with a rotor system as stiff as this before. The XH-59A was a unique design built strictly as a test vehicle for the advancing blade concept rotor system. By 1981 the development program was complete. To replace the Armys current Black Hawk transports, an aircraft needs to be able to land quickly in tight spaces under fire, drop troops, and then take off again ideally flying backwards so it doesnt have to wait to turn around. Prayer, revival and Jesus Revolution: Is our rotting culture on verge of something big? 1.1. A 40 ft. diameter test rotor was fabricated in 1970 and tested in the NASA Ames 40 x 80 ft. wind tunnel. So it should be no surprise that, ahead of next weeks mammoth Association of the US Army conference in Washington, Bell flew reporters out to its factory here to talk up the V-280 Valor and to denigrate the Sikorsky-Boeing SB>1 Defiant. Lockheed Martin delivered the first CH-53K training device to the U.S. Navy on April 14, 2020. At takeoff, this means the aircraft can lift off and move away quickly without needing to tilt forward. Here are more target drones for your ne The aircraft was designed to fly with or without the auxiliary propulsion J-60s installed. Boeing said it supports the protest filed by its partner. 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