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Topic: Spin (flight)

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	Concept to Reality
		In addition, the spin may be relatively steep, characterized by a nose-down attitude, an angle of attack ranging from slightly above the stall angle of attack to about 30∞, and a relatively large spin radius (distance of the center of gravity of the aircraft from the spin axis).
		The developed spin may also be fast and “flat,” with a relatively horizontal fuselage attitude, an angle of attack approaching 90∞, and the spin axis passing almost vertically through the center of gravity of the aircraft with a spin radius of near zero.
		Spin recovery is accomplished by upsetting the balance of aerodynamic and inertial moments acting on the aircraft by movement of the aerodynamic control surfaces.
	oea.larc.nasa.gov /PAIS/Concept2Reality/spin_technology.html (5258 words)

	Stall & Spin
		A spin in a small airplane or glider is a controlled or uncontrolled maneuver in which the glider or airplane descends in a helical path while flying at an angle of attack greater than the angle of maximum lift.
		A flat spin is characterized by a near level pitch and roll attitude with the spin axis near the CG of the airplane.
		Spin entry, spin, and spin recovery should be demonstrated by the instructor and repeated, in both directions, by the applicant.
	www.buckeye-illinois.com /stall_&_spin.htm (5435 words)

	A Spinning Yarn
		Twenty-four spin accidents during takeoff were partly caused by a combination of high density altitude, heavy weights, and adverse winds, all of which led to a failure of the pilot to maintain sufficient flying airspeed.
		Most of the landing spin accidents were officially attributed to the pilot being distracted or preoccupied with a mechanical failure, followed by the pilot's failure to maintain sufficient flying speed.
		Since 90 percent of spin accidents are caused by spins that occur at an altitude insufficient for a spin recovery, and since many of the spins occur in an aircraft configuration in which a spin recovery is highly unlikely, it really becomes a moot point whether knowing a spin recovery would make much difference.
	www.avweb.com /news/safety/181570-1.html (4223 words)

	Stall/Spin: seventy years later
		One critical region of flight is at high angles of attack, where the airplane is susceptible to stalling and possible spinning.
		The spin may be erect or inverted, flat (very high α, 70 to 90 degrees) or steep, and may have oscillations superimposed on the rotary motion.
		Spins and spin recovery should not be neglected, but emphasis needs to shift to departure resistance and early recovery.
	www.airpower.maxwell.af.mil /airchronicles/aureview/1974/may-jun/woodcock.html (3668 words)

	Volleyball
		For example, a top spin volleyball serve enhances the lift force in the direction of the spin [i.e., ascent phase (forward and downward), mid-flight (downward) and descent phase (backward and downward)] while decreasing the drag forces encountered in flight.
		Imparting spin to a projectile to cause a lift force in a desired direction is referred to as the Magnus effect.
		Spin is not imparted to the volleyball and the drag forces exerted against it in flight create an erratic flight path.
	webpages.ursinus.edu /rdavidson/NSFsite/SportPages/volleyballindex.htm (394 words)

	Spin (flight) (Site not responding. Last check: )
		In flying, a spin is a special case of a stall, with the aircraft descending rapidly and rotating about its vertical and longitudinal axes.
		A spin in which the nose is more-or-less level with the horizon is a "flat spin." Flat spins are very difficult to recover from because there is little or no smooth airflow over the control surfaces.
		Flat spins are mainly caused by the center of gravity of the aircraft being too far back, which is why when carrying out spin exercises in flight the center of gravity has to be carefully calculated.
	www.guideofpills.com /Spin_%28flight%29.html (1735 words)

	Innovations in Stall/Spin Training
		Spins are extremely complex phenomena, and no single factor can be used to predict the spin characteristics or recovery potential of a given airplane.
		It also depends on the direction and speed of the spin, the angle of attack of the spin, and the ratio of roll to yaw in the spin.
		In general, upright spins to the left with power "on" tend to spin both faster and flatter; upright spins to the right with power "on" tend to spin faster, but perhaps with less noticeable pitch change.
	www.richstowell.com /erau.htm (2681 words)

	AOPA Online: Instructor Reports
		In the course of operating an aerobatic flight and spin-training school in Tennessee, I'm finding out that a lot of new flight instructors are lacking in their knowledge of spins.
		My spin curriculum for flight instructor candidates includes three hours of ground school and two flights with many spin recoveries, including one 20-turn spin and a recovery from a developed spin using only airspeed, turn and slip, and altimeter (see "Spinning with a Specialist," p.
		The spins are flatter and have a faster rotation rate with full power throughout (until the recovery).
	www.aopa.org /asf/publications/inst_reports2.cfm?article=5289 (769 words)

	Launch Monitors and OptimalFlight
		Advanced ball flight tracking technology has confirmed the importance of landing angle at the end of a ball flight to maximize total distance.
		Ball Flight B is the optimal result for carry and lands at 40.4 degrees.
		The reduction in spin caused by a stiffer shaft contributes to a lower ball flight path and landing angle.
	www.qualitygolfstats.com /optimalflight.html (1230 words)

	Wings Forum :: View topic - Spin Testing - Be Careful Out There
		The brief entry and recovery were uneventful, however immediately after recovery to level flight at 75 KIAS it was observed that the slip ball was displaced fully to the left.
		In flight, possible causes were considered to be either (1) a stuck nosewheel, resulting in a rudder force bias from deflection of the nosewheel steering mechanism, or (2) structural deformation or incipient failure of the vertical stabilizer.
		The flight was passed to the local FSS, and an emergency was declared.
	www.wingsforum.com /viewtopic.php?t=1918 (1408 words)

	Page 3
		In a spin both wings may be stalled but the one on the outside of the spin has a higher speed and a slightly lower AOA than the inside wing.
		Spins and recoveries should be learned and practiced so that there are just as many recoveries as there are spins, unless you mastered swimming by going under twice and coming up once.
		Stall awareness, spin entry, spins and spin recovery technique are now part of the aeronautical section of the knowledge requirements for the private, commercial and CFI ratings.
	www.whittsflying.com /web/page3.275Spin_Causes_and_Recovery.htm (11278 words)

	APS Emergency Maneuver Training: Review of New AOPA Stall/Spin Study by Rich Stowell
		The advertised objective of spin training is to expand a pilot's knowledge, experience, and skill set to prevent an inadvertent spin departure in the first place.
		Although the intentional, one-turn spin might be included as part of a broader spin training program, it is merely one exercise used to develop a specific skill set, just as performing holding patterns, or S-turns across a road, or any other practice maneuver.
		The spin training branch includes power-on and power-off stalls, turning stalls, spin avoidance training using realistic distractions; intentional incipient spins; spin entry, spin, and spin recovery; spin-to-spiral transitions; aggravated spins; inadvertent stall and spin departures from unusual attitudes.
	www.apstraining.com /article10_fci_training_sep03.htm (7197 words)

	Limited Flight Evaluation of the Let L-23 "Super Blanik"
		On most flights Phase B and C stalls (left and right) were accomplished to determine departure susceptibility.
		Flight Manual recovery controls (basically NASA Standard controls--rudder opposite turn and stick aft until rotation stops, then neutralize all controls) were used as well as the ASK-21 recovery method (rudder opposite turn, pause, then stick forward).
		Aggravated aileron inputs during developed spins resulted in predictable changes to spinning motion in accordance with spin theory for a wing-loaded aircraft.
	www.eaa1000.av.org /fltrpts/blanik/blanik.htm (1686 words)

	LAX06FA200
		The Cessna flight time was characterized as spin training in the remarks section of the flight log; all of the spin training flights were conducted in the accident airplane.
		A student, who had flown with the instructor of the accident flight on the morning of the accident, stated that he was working on his CFI training and enrolled in the same program as the second pilot of the accident flight.
		In regards to spin training, the POH states, "For the purpose of training in spins and spin recoveries, a 1- to 2-turn spin is adequate and should be used.
	www.ntsb.gov /ntsb/brief2.asp?ev_id=20060615X00743&ntsbno=LAX06FA200&akey=1 (5067 words)

	Aerobatic Training, Emergency Upset Training, Spin Training
		Spin flights and aerobatic introductory flights are available as well.
		This spin flight will give you a much better understanding of what makes an aircraft spin and what it takes to make it recover.
		In this flight we will cover, the falling leaf, incipient spins and fully developed spins, stalls while slipping and stalls while skidding.
	members.tripod.com /~aerobaticman/id1.html (506 words)

	Airlines in a spin over flight delays
		At the airport, passengers were told that the flight would be delayed six hours due to a mechanical problem.
		It seems that they would prefer to argue and quarrel and bargain with passengers about the amount of compensation each time a flight is delayed rather than make a clear and detailed schedule of compensation payments.
		And an announcement to pay compensation to passengers in the event of flight delays will serve as a strong guarantee of the carrier's high standard of service.
	app1.chinadaily.com.cn /star/2004/0812/vo2-2.html (930 words)

	Golf Ball Spin
		A golf ball's spin rate refers to the speed it spins on an axis while in flight, measured in revolutions per minute (rpm).
		Spin rate off a driver generally ranges between 2,000 and 4,000 rpm, while the average, cleanly struck wedge shot spins at about 10,000 rpm.
		This back spin rotation, and the effect of the ball's dimples, generate the power that lifts the ball high into the air and plays a significant role in the amount of distance travelled by the ball.
	www.dealsongolfballs.com /technology/golf-ball-spin.html (1086 words)

	Fantasy of Flight, World's Greatest Aircraft Collection
		Our stunning art deco facility is home to over 40 rare and vintage aircraft many of which have been restored to flyable condition.
		But that is just the beginning - we offer a variety of guided tours including visits to our working restoration and maintenance areas.
		You can climb inside the cockpit of a Corsair fighter for a battle over the Pacific and then take a spin on our state-of-the-art hang glide simulator in our Fun with Flight area.
	www.fantasyofflight.com (156 words)

	California Flight Center - Flight Instruction
		The California Flight Center Spin Training Program will present spin theory, spin safety, and spin flight procedures in normal preparation for pilots who desire spin training or for those pilots who are seeking their Flight Instructor Rating and a FAR: 61.187 (b) (1)(x1) endorsement.
		The comprehensive discussion of spins given by our instructors enables the California Flight Center pilot to better understand the aerodynamics of the spin prior to flight training.
		California Flight Center uses the building block method of flight instruction, helping the pilot visualize what precedes a spin and the forces acting upon the aircraft during the spin and in the recovery.
	www.californiaflightcenter.com /spin.htm (194 words)

	Spin
		A spin is an uncoordinated stall that results in a corkscrew-like downward path (see Figure 8.1).
		Once the airplane is in a spin, it can require the correct recovery technique to stop the spin (see Figure 8.2).
		In airplanes that are not certified for spins, it may be impossible to get out of a fully developed spin.
	www.flightsimbooks.com /flightsimhandbook/CHAPTER_08_02_Spin.php (188 words)

	Spin Hop
		Spins were moderately violent, passingly disorienting and rather a lot of fun.
		It was to be a straightforward upright spin with me at the controls from the back seat for a demo: 350 kts to 80 degrees nose high, throttles idle and, as the airspeed bled down through 40 kts, full aft stick, full left stick and full right rudder.
		Precision spins were to be exactly 2 1/2 revolutions around any straight line chosen on the ground, ie: a road, highway, fenceline or railroad.
	www.neptunuslex.com /2007/11/05/spin-hop (3433 words)

	Spin Summary
		Just as a tennis player puts spin on the ball in order to influence the direction of its bounce, so too do public figures (especially politicians) try to "spin" events so as to favorably influence coverage by the news media.
		Political campaigns are prime occasions for the exercise of spin control, because everything that occurs in a campaign, short of the final vote count, is open to interpretation.
		One aspect of campaigns that is especially amenable to spin is the political debate, which lacks clear criteria for victory, and the television audience is not, in any case, made up of trained debate judges.
	www.bookrags.com /Spin (1237 words)

	Stall/Spin/Upset Training
		Although FAR 61.97(b)(10), 61.105(b)(10), and 61.183(i)(1) require ground instruction in stall/spin awareness for pilots (and flight training for instructors) who seek airplane or glider category ratings, many pilots—including many instructors—have little practical knowledge of accelerated stalls, cross-control stalls, and incipient or developed spins—and even less experience with the maneuvers in the air.
		Rich Stowell, one of the foremost experts on spins and spin training, points out that it’s often difficult to find flight schools and instructors who have the appropriate aircraft, training, and experience to provide effective stall/spin awareness training.
		A good stall-spin course for typical general-aviation pilots therefore focuses on all types of stalls, incipient spins, and recoveries from unusual attitudes—the types of situations that GA pilots flying normal-category airplanes in everyday operations are most likely to encounter.
	www.bruceair.com /stall-spin/stall-spin.htm (1907 words)

	Epinions.com - Compare Prices and Read Reviews on Titleist Pro V1 at Epinions.com
		The main core is a soft but solid center that is formulated to give a piercing ball flight but a steep angled descent to "bite" on the green.
		The trajectory is meant to have a low ascending flight with low spin rate on drives and high on irons.
		With driver it delivers a low spin rate but a piercing ball flight that seems to always updraft and suddenly fall at a steep angle.
	www.epinions.com /content_128435588740 (718 words)

	First Evidence that Black Holes Spin
		It was the detection of the higher frequency QPO at 450 Hz that implied spin.
		The spin of a fl hole would be caused by the angular momentum of the star that formed it, Strohmayer said, particularly if that progenitor is a spinning neutron star.
		Proposed X-ray space-science missions such as Constellation-X would be able to study fl hole spin in greater detail, observing how a spinning fl hole more strongly warps spacetime and stretches light emitted by hot gas, a test of general relativity.
	www.gsfc.nasa.gov /gsfc/spacesci/structure/spinningbh/spinningbh.htm (956 words)

	Tale Spin: High Flight Disclaimer
		Tale Spin: High Flight is a non-profit venture, and is intended in the spirit of a tribute to the power of the original series.
		Since High Flight is a collaborative effort, we have some specific policies about the borrowing of characters or situations we invented that were not in the original Tale Spin canon.
		Since High Flight is collaborative, there is no need to mention a specific author, but you must credit the hard working men and women who planned, discussed, and/or wrote the stories these characters appear in.
	home.earthlink.net /~eilonwy/highflight/disclaim.htm (452 words)

	Disc Golf Course Design & Installation - Gateway Disc Sports
		One of the theories is comparing the spin of a disc to a figure skater.
		Lead is added to the outer most rim in high end yo-yo's and they are now spinning up to 4 time longer than those without the added weight.
		Typically a Sabres ratio of weight from rim to flight plates is about 85 grams rim - 90g flight plate(closer to that of a mid-range disc) in a 175 gram disc while a Hybrid is more like 95 rim-85 flight plate.
	www.gdstour.com /disc_golf_spin.php (502 words)

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