This report summarizes the Heavy Lift Helicopter (HLH) Prototype program. The program was designed to demonstrate, in the actual flight environment, the capabilities of HLH components previously developed by Boeing Vertol under the Advanced Technology Components (ATC) effort. Design, fabrication, and assembly of one prototype HLH was 90 percent completed. An advanced aluminum honeycomb airframe, landing gear, and subsystems not included in the ATC effort were designed and fabricated. Limited laboratory tests were conducted to assure airworthiness of the prototype aircraft. Mockups were constructed of the crew compartment and aft area. A description of the aircraft, discussion of the tests conducted, and weight and performance data are presented. A list of references containing detailed documentation of the program is appended.
Handle / proxy Url: http://handle.dtic.mil/100.2/ADA051348The Heavy Lift Helicopter Advanced Technology Component (ATC) development program was conducted by the Boeing Vertol Company for the U.S. Army from July 1971 through July 1975. As a part of this program, an advanced rotor hub and upper controls system design was developed and demonstrated to be satisfactory for application to the XCH-62 Prototype HLH. The ATC hub and upper control component development/demonstration activities included the flap/lag pitch elastomeric bearing, frequency selective lag damper, and shear bearing development efforts; manufacturing techniques development; fretting inhibitor evaluation; safe-life, fail-safe, and endurance testing of major hub and upper control components; whirl tower tests; and integrated rotor-drive system tests.
This report reviews the development of the Model 301 Heavy Lift Helicopter rotor blade. It describes the design, structural analysis, testing, and manufacturing process of the HLH rotor blade
Jemiba said:"I'm sad to hear that the XCH-62 mockup was destroyed... "
Sad indeed, especially as it wasn't just a mock-up, see here
I'm sad to hear that the XCH-62 mockup was destroyed...
This auction is for an official Boeing print from a photo negative slide of a concept illustration of a HLH or Heavy Lift Helicopter. It measures 11" X 8 1/2". This is a match to a negative I am also listing today and is probably the source for this print. This is one of many prints and color negatives from the estate of a Boeing engineer I will be listing in the coming days. Many are labeled as having been used in various "presentations to the Board of Directors" from the late 60's to early 70's and are in cardboard frames, some are not. This one is labeled CHINOOK CRANE BOEING-VERTOL MODEL - 297 on the bottom front and is stamped RECEIVED OCT 26 11:50 AM '67 OFFICE OF DIRECTOR OF RESEARCH on the back along with a hand written note that says There is a model 299- but its so new they don't have pictures yet.
Barrington Bond said:Does this belong here?!
Flug Revue+Flugwelt International 10/1969
Triton said:helicopters have been named for Native American leaders
Triton said:The Sikorsky CH-54 Tarhe was named for Tarhe (1742–1818) a leader of the Wyandot people in the Ohio country. He fought European-American expansion into the region until the Western Indian Confederacy was defeated at the Battle of Fallen Timbers in 1794.
Sources:
http://en.wikipedia.org/wiki/Tarhe
http://en.wikipedia.org/wiki/CH-54_Tarhe
UP FOR BID WITH "NO RESERVE" IS AN ULTRA RARE DESK MODEL OF THE HUGE EXPERIMENTAL HLH ( HEAVY LIFT) ARMY HELICOPTER CONCEIVED BY BOEING IN THE LATE 1970'S BUT WHICH NEVER FLEW OFF THE GROUND. THIS DESK MODEL WAS MADE FOR BOEING POSSIBLY BY TOPPING OR ROLEN AND DISTRIBUTED TO ARMY GENERALS AT THE PENTAGON.
THE MODEL IS IN PRISTINE CONDITION WITH NO MISSING PARTS THAT I CAN TELL NOR ANY CRACKS OR GLUED AREAS ANYWHERE. IT'S AWESOME TO LOOK AT AS IT IS DIFFERENT THAN OTHER HEICOPTERS WE ARE ACCUSTOMED TO SEE AROUND US.
THE MODEL IS LIKE NEW AND IS IN EXCELLENT CONDITION EXCEPTING A COUPLE OF MINUTE CHIPS OFF THE DECALS AND COMES WITH 4 ROTOR BLADES AND A BLACK PLASTIC STAND. NOT SURE IF THE MODEL IS MADE OF PLASTIC OR FIBERGLASS, EITHER WAY IT'S AN OUTSTANDING MODEL TO OWN AND ADD TO ANY HELICOPTER COLLECTION. THIS ONE WAS PURCHASED ALMOST 20 YEARS AGO FROM A GOOD FRIEND PILOT (DECEASED)WHO CAPTAINED A GOLDEN DC9 OWNED BY THE LATE MALCOLM FORBES.
THE MODEL STANDS ABOUT 5 INCHES HIGH AT IT'S TAIL, APPROXIMATELY 4 INCHES WIDE AT IT'S WIDEST BODY SECTION CARRYING THE REAR WHEELS AND IS APPROXIMATELY 11 INCHES LONG. THE SCALE IS PRINTED ON THE STAND'S DECAL AS 1/96TH. A REAL GEM OF A MODEL AND VERY VERY UNUSUAL. I HAVE NOT SEEN ANOTHER ONE LIKE IT IN MY 35 YEARS OF COLLECTING HELIS EXCEPTING ONE (1) EXAMPLE AT THE HELICOPTER MUSEUM IN VIRGINIA.
Stargazer2006 said:Cool painting of the HLH, one of my pet helo projects! Thanks for sharing.
BOEING XCH-62A Prototype Giant Helicopter Photo Print. Neat Old Print .Printed on Photographic paper MECOM 73 stamped on back Measures "11x "14 would look awesome framed. Assume all the signatures are from BOEING engineers at the plant. This thing was a true GIANT. Max gross over 110,000 over 24,000 hp of engines. Length: 87 ft 3 in (26.59 m) (overall fuselage length) Height: 32 ft 3 in (9.83 m) (to top of pylon) Empty weight: 59,580 lb (27,025 kg) Gross weight: 118,000 lb (53,524 kg) Powerplant: 3 × Allison T701-AD-700 turboshaft, 8,080 hp (6,030 kW) each Main rotor diameter: 2× 92 ft 0 in (28.04 m) Main rotor area: 13,260 sq ft (1,232 m2) Maximum speed: 145 kn (167 mph; 269 km/h) with external load Combat range: 150 nmi (170 mi; 280 km) Ferry range: 1,500 nmi (1,700 mi; 2,800 km) The Boeing Vertol XCH-62 (Model 301) was a three turbine-engined, heavy-lift helicopter project designed for the United States Army by Boeing Vertol. Approved in 1971, only one aircraft was built before it was cancelled in 1974. An attempt by NASA to resurrect the program was aborted in 1983.