actuators. Jackscrews are also used extensively in aircraft systems to raise and lower horizontal stabilizers. The failure of a jackscrew on a Yakovlev...

primary nut." The "fail-safe" jackscrew modifications would allow for the maintenance and monitoring of the jackscrews more readily accessible, and thus...

centered around each mounting hole on ATX motherboards. Pairs of #4-40 UNC jackscrews are used to fasten certain connectors to hardware ports. These fasteners...

of its low-lying swampy ground. Buildings and sidewalks were raised on jackscrews. The work was funded by both private property owners and public funds...

project raised much of central Chicago to a new grade with the use of jackscrews for raising buildings. While elevating Chicago, and at first improving...

D-subminiature connectors), short standoffs may be used to receive the jackscrews that lock the connection together. In contrast, some spacers may look...

Jackscrews are integral to the scissor jack, one of the simplest kinds of car jack still used....

deadliest aviation accident in Belarus. The cause was a failure of the jackscrew controlling the horizontal stabilizer due to a design flaw. The Yakovlev...

thread profile, used in high load applications such as leadscrews and jackscrews. It gets its name from the square cross-section of the thread. It is the...

usually have #4-40 UNC (as designated with the Unified Thread Standard) jackscrews that accept screws on the cable end connector cover that are used for...

sealing. Locking mechanism designs include locking levers of various sorts, jackscrews, screw-in shells, push-pull connector, and toggle or bayonet systems....

failure of the jackscrew in the stabilizer, leading to the deaths of 88 people. Aeroflot Flight 8641, a Yakovlev Yak-42 that suffered a jackscrew failure due...

climb at takeoff speed, its roll instability, the position of the flap's jackscrews in the fully retracted position, and the absence of sounds indicating...

de-watering the tunnel. This shield was made of cast-iron and was moved by jackscrews. Shelves supported the different sides until more permanent brick linings...

field investigation, the NTSC managed to recover six out of eight flap jackscrews, and all of them were in the retracted position. The team also discovered...

up in mid-air and crashed near Mozyr, Belarus, due to a failure in the jackscrew mechanism caused by metal fatigue, killing all 132 on board in the first...

Airlines Flight 261, which was caused by a broken jackscrew. In that incident, an ungreased jackscrew came loose and caused a catastrophic failure from...

accident to be the failure of acme nut threads, which were part of the jackscrew assembly for the horizontal stabilizer's trim system. On December 26,...

all 88 on board. The stabilizer failed due to an improperly maintained jackscrew assembly. Note: This crash is covered again in the Season 22 episode 'Pacific...

expedition mission. Expeditions introduces a number of new tools, including jackscrews which flip over players' cars, metal detectors and camera drones which...

colonists had a metal jackscrew that he had purchased in Holland to help in the construction of the settlers' homes. The crew used the jackscrew to secure the...

to and from the holds of ships and force them in tightly by means of jackscrews. A Hoosier cabinet, often shortened to "hoosier", is a type of free-standing...

the Unified Thread Standard. In machine linkages such as lead screws or jackscrews, in contrast, friction must be minimized. Therefore, threads with smaller...

on the elevator create an opposing force, effectively paralyzing the jackscrew mechanism that moves the stabilizer. It becomes very difficult for pilots...

were killed. Following the crash, an improperly maintained Acme nut and jackscrew recovered from the aircraft were found to be excessively worn. An airworthiness...

Gulf Coast, and the Caribbean—including "cotton-screwing" (using a large jackscrew to compress and force cotton bales into the holds of outbound ships at...

severely damaged the horizontal stabilizer mechanism, including breaking its jackscrew, rendering the airplane uncontrollable and resulting in the abnormal pitch-up...

that suffered a catastrophic loss of control after improper repairs to jackscrew few years prior. China Airlines Flight 611, a flight that suffered a catastrophic...

Soviet Socialist Republic following a failure of the horizontal stabilizer jackscrew due to fatigue caused by design flaws, killing all 132 on board. All Yak-42s...

and data equipment Jack (device), a device used to lift heavy objects Jackscrew, a device used to support heavy objects at various heights Pallet jack...

MD-83 The aircraft lost pitch control when an inadequately lubricated jackscrew tore loose, causing it to crash into the ocean while preparing for an...

into the Pacific Ocean off the coast of California after the plane's jackscrew failed, killing all 88 on board. On July 25, 2000, Air France Flight 4590...

international design competition. The memorial as built incorporated motors and jackscrews to constantly track the Sun across the sky in both pan and tilt axes....

on. When it was time to ring the bell, the cradle would be lowered via jackscrews, and eight men would pull the hefty clapper back and forth on ropes. This...

adjustable stabilizer trim system is powered by an electrically operated jackscrew. One example of an airliner with a true stabilator used for flight control...

D-subminiature connectors), short standoffs may be used to receive the jackscrews that lock the connection together. tension control bolt A tension control...

it was to be rung, the rails had to be lowered away from it by turning jackscrews, and then eight men pulled on the two ropes attached to its heavy clapper...

displacement via screws and/or gears to which the knob or handle is attached. A jackscrew or car jack is a familiar mechanical actuator. Another family of actuators...

have suffered from the same problem as Lion Air Flight 610 in that the jackscrew controlling the pitch of the horizontal stabilizer of the crashed Flight...

presses) may operate by means of the mechanical advantage supplied by a jackscrew or by a gear reduction driving a rack and pinion. The amount of force...

same problem Lion Air Flight 610 had faced. Investigators discovered the jackscrew that controlled the pitch angle of the horizontal stabilizer of Flight...

controls were destroyed in the crash, but the NTSB recovered two trim jackscrews from the horizontal stabilizer. The NTSB recreated the stall in a simulator...

crossed the Kaltag Portage west to the coast. Athabascan Jack Nicolai, aka "Jackscrew", took it up the first half of the portage to Old Woman Cabin and Victor...

creating a version of a butter churn, a door spring, a lock for a door, and jackscrews for teeth. Westcott was a well-regarded citizen in Syracuse; historian...

killed. 28 June 1982 – Aeroflot Flight 8641, a Yakovlev Yak-42, suffered a jackscrew failure, causing the aircraft to lose control, disintegrate in mid-air...

one of the pilots. Furthermore, the investigators had found the trim jackscrew for the horizontal stabilizer, which revealed that flight inputs from...

leases. Instead, Hale lifted the second, third, and fourth floors on jackscrews and demolished the first. A new basement and ground floor, designed by...

of which are listed below. Aeroflot Flight 8641: Metal fatigue in the jackscrew of the horizontal stabilizer caused the component to fail while the plane...

20°, 40° and 60°, creating an inflight "variable-geometry" platform. A jackscrew assembly moved the wing's hinge along a set of short horizontal rails...

adjustable stabilizer trim system is powered by an electrically operated jackscrew. Variants on the conventional configuration include the T-tail, Cruciform...

guided glide bomb. The elevator was operated with an electrically powered jackscrew as the only proportional control, while the ailerons were operated with...

operated the rearmost strut's upper end, moved with a manually turned jackscrew running spanwise within the wing structure, to "slide" outwards and inwards...

father could help widen the canal. His father had invented a machine using jackscrews that could move buildings or other structures out of the way and onto...

with rear-end-hinged dorsal and ventral panels opened and closed by a jackscrew. It was powered by BMW 801L engines and armed with forward firing 15 mm...

Two of the points were aligned on a polar axis while the third was a jackscrew actuator to drive the platform. This gave the mount a few minutes of equatorial...

It is a telescopic tubular steel prop, used as a temporary support. A jackscrew is similar but not as long and not telescopic. Outside the UK an Acrow...

near the island following a catastrophic loss of pitch control caused by jackscrew, killing all 88 people aboard. Along with the Channel Islands Beach area...

one directionPages displaying short descriptions of redirect targets Jackscrew – Mechanical lifting device operated by turning a leadscrew Leadscrew –...

Ocean about 2.7 miles (4.3 km) north of Anacapa Island, California. A jackscrew of the horizontal stabilizer failed, causing a loss of control. All 88...

27.2 for both ends fixed Ball screw Roller screw Fine adjustment screw Jackscrew Ball Screws & Lead screws, retrieved 2008-12-16. Bhandari, p. 202. Shigley...

rails and the carriage was lifted by four jackscrews through the floor of the car. The combination of jackscrews, outriggers, and rail clamps stabilizing...

times which amounts of 1mm per week. Patient is instructed to turn the jackscrew at the same rate for next 8–10 weeks to achieve the desired expansion...

G-load on the plane, resulting in binding of the horizontal stabilizer jackscrew such that it remained in a full trimmed down position. The plane came...

Mozyr while en route, following the failure of the horizontal stabiliser jackscrew due to metal fatigue. The aircraft was operating a Leningrad–Kiev passenger...

the track along which its flanged wheels moved. They also set up the jackscrews necessary to stabilize the shovel in front of the rock face it was digging...

the powerplant. The jackscrew is attached between the airframe and the upper forward end of the pylon such that when the jackscrew is retracted (shortened)...

wing was attached to the fuselage by a single pivot, and controlled by a jackscrew in the cockpit. This allowed for an unusually broad speed range, so that...

that is in contact with palatal mucosa. Inside the acrylic there is a jackscrew that is embedded for patients to make turns to expand the device. In addition...

low-technology method is to use building jacks called screw jacks or jackscrews which are manually turned. With both types of jacking systems, wood beams...

depressing a zig-zag setback device and the wind stream forces unscrewing a jackscrew locking device. This delay in mechanical arming after two independent...

traverse. Once on site the carriage's outriggers would be unfolded and jackscrews at the ends of the outriggers lowered to level the carriage and take the...

mechanism, no traversing mechanism, and elevation was controlled by a jackscrew beneath the breech. The lower part of the gun shield was hinged and could...

gun shield, no traversing mechanism, and elevation was controlled by a jackscrew beneath the breech. Since it had limited elevation -10° to +20° it was...

move with a hydraulic jack on machines designed for steel plate, or a jackscrew on machines designed for sheet metals. As the material thins, the operator...

head and sleeve, whose distance from the crankshaft was adjusted by a jackscrew operated by cables from a twist grip on the handlebar. Compression adjustment...

metal construction. It incorporated a variable-incidence wing, with a jackscrew mechanism allowing the wing to be adjusted in flight, with the angle of...

4-wheeled bogie at both ends that could also be raised and lowered. Lastly, jackscrews are provided on the car body for transferring from one set of trucks to...

beyond safe limit 88 Lack of lubrication causing structural failure of the jackscrew on the horizontal stabiliser resulting in aircraft descending inverted...

incidence, pivoting at the front spar and actuated by an electrically driven jackscrew attached to the rear spar. This arrangement reduced stalling speed and...

derailed on the curve around Issingham Barracks. The line only had a 5-ton jackscrew and a large crew spent most of the next day re-railing the locomotive...

failure of the stabilizer was violent enough to fracture the vertical trim jackscrew, which would have resulted in the remaining horizontal stabilizer pitching...

worked in still life and landscape genres. He collected saws, planes, jackscrews, and brace-and-bits, which he turned into "strong and colorful" oil paintings...

are all-metal. The brakeless retractable main gear used a simple manual jackscrew. A tailskid was used rather than a tailwheel. 1936 National Air Races...

fourth story window in the north end of the building, with the help of a jackscrew smuggled in from the outside, and climbed outside using a rope. He remained...

back wheels of the fire engine were lifted off the ground by a built-in jackscrew when pumping water for use on a fire, whereupon they served as flywheels...

panels that created a circular base when unfolded and a combination of jackscrews, outriggers, and rail clamps stabilized the carriage during firing. The...

gun shield, no traversing mechanism, and elevation was controlled by a jackscrew beneath the breech. It could be broken down into four mule loads for transport...

skids to direct the schooner into the water. They employed hydraulic jackscrews to dislodge her from the sand onto the skids while the Wallowa pulled...

4-wheeled bogie at both ends that could also be raised and lowered. Lastly, jackscrews are provided on the car body for transferring from one set of bogies to...

began in early 2017 and was performed by lifting the building using 20 jackscrews and removing the bottom most section. Using this process the building...

them to use a single positioner to move the antenna in the form of a "jackscrew" or horizon-to-horizon gear drive. Polar mounts work in a similar way...

pushed under the water. Favorite had sunk on a Friday, but with the use of jackscrews, and the aid of the tug Triumph and a scow, by Sunday evening, Favorite...

heavy chain would be placed around the hull and secured to the timbers. Jackscrews would be placed under the timbers and gradually turned. As the timbers...

commissioned which it noted featured "...a cornice [that] is pure sculpture - no jackscrews of mingled mouldings [to] confuse its clean profile." The illustrated...

was an accident. When lowering the ship to allow visitor boarding, the jackscrew holding the stern gave way, and the keel fell on Primorac's leg, causing...

steel-rimmed wheels for towing. There was a crescent-shaped rail with a jackscrew at the front of the platform that controlled traverse and elevation. The...