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Q: What is step 3 in usaf lockout and tagout program?
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What is the proper five step USAF return to service sequence for lockout tagout?

1. Check the Area: Check the work area to ensure that all personnel are clear of the machinery and equipment.2. Check the Machine: Check the machinery and equipment to ensure that everything is properly assembled, all nonessential items are removed, and the machinery and equipment is ready for safe operation.3. Verify: Verify that switches and controls on the machinery and equipment are in the OFF position, are properly aligned, or are in the neutral position.4. Notify: Notify the affected worker(s) of the return-to-service procedure. If there is a question about who the affected workers are, the authorized worker shall notify the machinery and equipment owner/operator.5. Return: After the affected persons have been notified,- notify the machinery and equipment owner/operator of intent to re-energize;- obtain authorization to re-energize from the machinery and equipment owner, if required;- remove the lock and tag from the energy-isolating device;- re-energize and test the machinery and equipment or coordinate testing with the machinery and equipment owner/operator to ensure that the machinery and equipment can be operated safely (if independent verification is required, that task would be completed at this point in the process); and- return the machinery and equipment to "ready for duty" status.


How long does it take to pump fuel into the fuel tanks on a Boeing 747 plane.?

About 8 hours. The B747-200 had a fuel capacity of 330,000 lbs and used approximately 25,000 lbs per hour. The USAF E-4 Airborne Command Post is a highly modified B747-200 that has in-flight refueling capability and extra tank for engine oil and it can fly 3 days without landing.


How can airplanes hover with no forward speed?

An aircraft has what is called a stall speed. this speed is the point at witch the wings stop creating the necessary lift needed to keep it aloft. depending on many factors different aircrafts have different stall speeds. some as slow as 38 knots. so essentially this small aircraft will need to be pointed in the direction of the wind witch must be a sustained wind of at least 38 knots. In theory it is possible but highly unlikely. There are dubious claims that this type of aircraft can actually fly backwards. Its all a factor of the relative wind velocity across the wing.Improved AnswerAircrafts are able to hover with no forward speed. The Harrier and the F-35Bs can both do it.Basically, how they work is similar to helicoptersInstead of forward thrust for lift (like other aircrafts),The thrust points downward to push the body up.Both aircrafts' body and flaps are designed to either cruise or takeoff/land verticallyThese two are the only two on top of my head, not sure if there are others like themOh, and one more thing: these aircrafts are called VSTOL aircrafts (stands for Vertical Short Take Off and Landing)Hope that helps!


What was the name of the first rocket built?

The first manmade object known to have been placed in Earth orbit was Sputnik 1 - a Soviet satellite. However, the first manmade objects to enter space sub-orbitally were arguably German A4/V2 ballistic missiles. These were being developed and launched from the Baltic island of Peenemunde from before WW2 and several thousand were fired in action before the close of hostilities. The standard A4 missile reached altitudes in excess of 50 miles, long considered the threshold of "space". After WW2 the United States continued to launch them experimentally from White Sands missile range. They created a two stage version, the "Bumper" which climbed to even greater altitudes and would be the safest contender for this title of first manmade object in space. Prior to 1950. It should be borne in mind that the question is rendered ambiguous by the fact that "space" has no distinct beginning. Whilst the International Space Station ( ISS ) orbits at about 200 miles altitude and most manned flight occurs there or lower, the upper regions of Earths atmosphere extend several thousand miles further! It is for this reason, resulting in subtle aerodynamic drag that such low orbits decay if the vehicle is not periodically boosted, as is the ISS by means of Russian Progress and Soyuz vehicles. It can therefore be argued that the earliest manmade objects in space were actually high altitude balloons. It is argued, moreover, that the first man in space was USAF colonel Joseph H. Kittinger, who made the highest human balloon ascent in history aboard Excelsior 3, from which he returned by parachute, on August 16th 1960. The highest parachute drop ever, wearing a space-suit and descending for several minutes before his chute could be opened.


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