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	Stall (flight) - Wikipedia, the free encyclopedia
		A stall is a condition in aerodynamics and aviation where the angle between the wing's chord line and the relative wind, defined as the angle of attack, exceeds the critical angle of attack.
		Stall speed varies on different airplanes and is represented by color codes on the air speed indicator.
		The simplest such device is a 'stall warning horn', which consists of either a pressure sensor or a movable metal tab that actuates a switch, and produces an audible warning in response.
	en.wikipedia.org /wiki/Stall (1984 words)

	[No title]
		Consequently, applicants are encouraged to use 1-g stall speeds that reflect the ability of the wing-generated lift to support the weight of the airplane in 1-g flight.
		Stall speed flight tests should be accomplished with engines idlingthrottles closed and the propellers in the takeoff position.
		Stall demonstrations with deceleration devices deployed should normally be carried out with power off, except where deployment of the deceleration devices with power on would likely occur in normal operations (e.g., extended spoilers during landing approach).
	www.aia-aerospace.org /issues/subject/jaa_req_0302/ftg/ch2sec6.doc (4291 words)

	Precision Industries
		Stall is the speed at which the converter will hold the engine speed and not allow further gain (i.e., the engine "stalls").
		It is clear that the stall speed on a given converter will not be the same coupled to a tame small block engine when compared to a big block with all of the muscle features added.
		Stall speed determined by this method should be identified as such when discussing stall speed determination.
	www.converter.com /q1.htm (382 words)

	Understanding Stall Speed \| Banks Power: Understanding Stall Speed by Aaron Gold
		In other words, stall speed is the engine RPM at which the torque converter transfers the power of the engine to the transmission.
		With a lower stall speed, less time elapses before the motion energy of the impeller is converted to motion energy to drive the turbine, so the transmission runs cooler and lives longer.
		Stall speed is determined by several factors, including the distance between the impeller and the turbine and the design of the stator.
	www.bankshotrod.com /Tech_understandstallspeed.cfm (765 words)

	Embry-Riddle - When Lift Fails
		The taper causes the stall to initiate along the entire trailing edge, moving forward as the angle of attack is increased.
		The shorter the chord (as at the trailing edge), the sooner the stall begins, because as the chord is decreased the distance also decreases between the CP and the higher pressure at the trailing edge.
		The most unfavorable stall characteristics are found with the swept wing, which is used in transonic aircraft to reduce wave and parasite drag at cruise speeds.
	www.erau.edu /er/newsmedia/articles/wp3.html (2674 words)

	Cessnastall
		This speed will vary with weight, temperature and how far the aeroplane is banked in a turn.
		As you get near the stall the controls will be less effective the airspeed will start to drop and the stall warning will sound.
		To practice stall recovery climb to 4500 ft level off the aircraft, close the throttle, as the aircraft slows keep pulling the stick back trying to stop the aircraft losing height.
	www.avsim.com /geoffschool/combined/Cessnastall.htm (432 words)

	Chevelle Tech - What does transmission "stall speed" mean and why does it matter?
		The stall is the speed @ which the motor and transmission are spinning and the same rate.
		Below the stall speed of the converter, very little power (torque) of the engine is transfered because the converter (by design) is coasting.
		Change the angle or pitch of the vanes during manufacturing and you change the speed at which they "really bite" into the fluid and transfer that spin (and torque or force) to the other half of the converter which is connected to the drive train.
	www.chevelles.com /forums/showthread.php?t=85188 (784 words)

	Aerospaceweb.org \| Ask Us - Airliner Takeoff Speeds
		The takeoff speed of such aircraft varies quite a bit, depending on the takeoff weight and the use of high-lift devices like flaps (2) and slats.
		The stall speed is an important quantity throughout aerodynamics as it dictates the slowest speed at which an aircraft can travel and generate just enough lift to remain or become airborne.
		The critical engine speed therefore defines the point on the runway at which the distance needed to stop is exactly the same as the that required to reach takeoff speed.
	www.aerospaceweb.org /question/performance/q0088.shtml (955 words)

	NHRA: National DRAGSTER (Racing Technology) (Issue 8, 1999) (Site not responding. Last check: 2007-11-05)
		For street-strip use or dedicated drag racing, increasing the stall speed allows the car to leave the starting line at a higher rpm, usually at a point where a modified engine is producing more torque.
		As an example, a converter that stalls at 2,500 rpm in a lightweight roadster with a small-displacement mouse engine might stall at close to 4,000 rpm in a '55 Chevy with a 454.
		As can be gathered, specifying a stall speed for any given converter is virtually impossible due to the wide array of probable engine and torque curve combinations.
	www.nhra.com /dragster/1999/issue08/racing_technology.html (1758 words)

	Stall speed vs wing thicknes & AoA - confused - RC Groups
		A straight wing stalls at the root first, but as taper is increased the stall area spreads out towards the tips.
		Stall speed of the aircraft in level flight is determined by how much lift the wing produces at its stalling AOA.
		This is why a high-lift airfoil contributes to a slower stall speed, and a heavier plane stalls at a higher speed (more lift is required to hold it up, and any airfoil produces more lift as speed is increased).
	www.rcgroups.com /forums/showthread.php?t=64463 (853 words)

	ProTorque
		Stall speed is a term used to describe the rpm at which the torque converter transfers the power from the engine to the transmission.
		Theoretically, for maximum acceleration the stall speed of the torque converter should match the peak torque rpm of the engine.
		Generally with a higher stall speed you loose some of the driveability, and the driveability increases with a lower stall speed.
	www.protorque.com /techi/ti_faq.htm (1375 words)

	[No title]
		Stall speed should be selected so that the torque converter will reach its stall speed just before the engine starts it power-band (when torque output begins increasing sharply).
		For street use we never recommend a stall speed higher than 3000 to 3500 rpm depending on the rear end ratio and your normal driving rpm.
		With a 3000 rpm stall this vehicle is drivable at any rpm, it may seem a bit sluggish or lazy until you reach 3000 rpm.
	www.tccoa.com /articles/tranny/stall.html (807 words)

	What’s Up With Stall? (Site not responding. Last check: 2007-11-05)
		Stall speed boils down to the rpm at which the converter effectively locks the motor to the driveline and multiplies torque at a one-to-one ratio.
		Brake stall isn’t usually an accurate measuring tool since the engine often overpowers the wheels before the true stall speed is reached.
		Reducing the diameter of the converter reduces its ability to multiply torque, puts less stress on the fins, and raises the stall speed, so small converters are generally better suited to peaky high-performance engines with higher-winding powerbands.
	carcraft.com /techarticles/80098 (1563 words)

	Performance Torque Converters for GM, Ford and Dodge - Torque Converter
		Stall speeds can't be checked at a stop unless your brakes have enough holding power to hold the rear tires from turning.
		Stall speeds of 3000 RPM or greater aren't recommended for use with engines with an "advertised" cam duration of less than 292.
		This torque converter stalls at 2500 RPM and comes with furnace brazed fins, all bearing construction, is balanced and has a heavy duty damper clutch.
	www.partshp.com /Converters.htm (2326 words)

	Testimonials of vgs
		Regarding cruise and maximum speed, the cruise on this aircraft was 160 knots at 24/24 and now with the VGs fitted there appears to be no change.
		I have lowered the stall speed by 6 to 8 mph.
		The low speed and landing characteristics were greatly improved and also the aileron control near stall.
	www.pnwaero.com /testimonials.htm (757 words)

	SUPER honda - stall speed
		Ive seen an average stall speed of 400-600 for the ludes.
		the point of a higher stall is when your at the drag track you launch at a higher rpm and closer to your powerband.
		like i said the higher the stall speed the more and more it feels like turbo lag when you drive it on the street because you obviously wouldnt be launching it everywhere.
	www.superhonda.com /forum/showthread.php?t=33378 (581 words)

	THE STALL And Angle of Attack (Site not responding. Last check: 2007-11-05)
		Loosely defined, a stall occurs when the angle of attack of the planes wing exceeds the point where the airflow can follow the wings contour; the organized airflow breaks down, sharply reducing lift (see diagram).
		But folks will advertise the stalling SPEED of an aircraft; when they do so, certain conditions must be specified or implied: 1) straight and level flight 2) the weight of the plane (``at max gross'') 3) Atmospheric conditions (``sea level, standard day'') 4) power on or off 5) high lift devices (flaps up or down).
		But in BOTH cases, the stall angle of attack is the same, at 10 degrees.
	www.mindspring.com /~cramskill/stall.htm (769 words)

	Shock Stall, High Speed Aerodynamics (Site not responding. Last check: 2007-11-05)
		Typical values for old low speed airfoils of M are of the order 0.45 to 0.65.
		The pitching moment is generally subject of a transonic spike of the type shown in Fig.
		The use of thin supercritical wing sections, low lift at operation point, and wing back sweep are among the most effective methods of postponing the shock stall to higher speeds.
	aerodyn.org /HighSpeed/shock-stall.html (268 words)

	LS1TECH - Stall speed vs. Horsepower... (Site not responding. Last check: 2007-11-05)
		If you take a converter that stalls @3500 with say 300 RWHP and compare it to its perfomance with a 400 RWHP engine what difference will there be.
		I know the stall speed will be higher, but will it be 3550 or 4000???
		so with an increase of 33% in horsepower (400 vs. 300) the stall speed would be increased roughly by sqrt(4/3) = 1.1547.
	www.ls1tech.com /forums/printthread.php?t=3103 (210 words)

	September 2003 Safety Newsletter (Site not responding. Last check: 2007-11-05)
		His admonition was that extra care was necessary because the loss of speed from flying into the wind to flying downwind could cause the aircraft to stall.
		Recall that the definition of angle of attack is the angle formed between the relative wind and the chord line of the airfoil.
		Note that the lower limit of the white arc on the airspeed indicator (power-off stall speed with gear and flaps in the landing configuration), is lower than the bottom end of the green arc (power-off stall speed in a clean configuration).
	www.rollanet.org /~mopilots/stlouis/sep2003nws.htm (593 words)

	ipedia.com: Stall Article (Site not responding. Last check: 2007-11-05)
		A stall is a (usually undesired) condition in aerodynamics and aviation.
		An aeroplane can be made to stall by reducing the speed to the stall speed (which corresponds to the stall angle described above) and attempting to prevent the plane from descending by applying inreasing up elevator control input.
		In most cases, as the stall is reached the aircraft will start to descend (because the wing is no longer producing enough lift to support the aeroplane) and the nose will pitch down.
	www.ipedia.com /stall.html (656 words)

	Ground Effects in the Aviation History Encyclopedia (Site not responding. Last check: 2007-11-05)
		Left uncorrected, a balloon can lead to a dangerous situation where the aircraft is rising yet decelerating, a condition which can rapidly lead to a stall, especially when it is considered that landing speeds are generally only a very small margin above the stall speed.
		A stall even from a few tens of feet above the ground can cause a major, possibly fatal, crash.
		In racing cars, a designer's aim is not for increased lift but for increased downforce, allowing greater cornering speeds.
	www.usairnet.com /encyclopedia/Ground_effects.html (783 words)

	Airliners.net Military: Coffin Corner
		That means that there can be a situation on a very high altitude where a small decrease in speed would lead to a low speed stall, and a small increase in speed to a high speed stall.
		The critical Mach number is the speed in terms of the speed of sound where the airflow over the wing goes in excess of Mach 1.
		Here the stall speed is very high (due to low air density) and the critical Mach number is very low (due to low ambient temperature).
	www.airliners.net /discussions/military/read.main/11936 (1399 words)

	Enjoy The Drive -- Stock Stall Speeds (Site not responding. Last check: 2007-11-05)
		Therefore, you need a converter with a higher stall speed so that you can launch the car in the fat part of the powerband.
		"If the stall speed isn't high enough, the car won't be making power when you launch and you'll bog off the line.
		If your setup is really mismatched, the motor may even want to stall whenever you attempt to shift into gear at idle.
	www.enjoythedrive.com /content?id=7271 (173 words)

	Chevelle Tech - Stall speed???
		If you go smaller, (higher stall), you'll be in a "slip-state" when driving normally at highway speeds due to the low(er) rear gear.
		Typically, you dont want your actual stall speed to exceed your cruise rpm by a large margin.
		There is always some degree of slippage reguardless of the stall speed and reguardless of your engine rpm.
	www.chevelles.com /forums/showthread.php?t=91994 (946 words)

	Bob Fiorenze's Home Page
		The stall warning buzzer can also be used as a take-off aid.
		Speed Range :........................0-230 mph (in one mph increments).
		Stall Speed Warning :.............Progressive audible warning can be set to any stall speed.
	www.rcaviation.com /fiorenze (817 words)

	SGF March 2001 Aviation Safety Corner (Site not responding. Last check: 2007-11-05)
		No, he doesn't want a stall; he just wants to see you lift off, start a climb, then keep hauling the nose up until the stall horn starts sounding or you feel the first buffet.
		And it probably is very close to the power-off stall speed, should you suddenly lose engine power.
		In a multiengine airplane, Vx and Vxse may be perilously close to Vmc (minimum single-engine control speed) or engine-out stall speed.
	www.rollanet.org /~mopilots/sgf/mar2001sgf2.htm (863 words)

	OV-1C EC83-22719: Grumman OV-1C in flight
		NASA designed and built an automated stall-speed warning system which presented both airspeed and stall speed to the pilot.
		Visual indication of impending stall would be displayed to the pilot as a cursor or pointer located on a conventional airspeed indicator.
		In addition, an aural warning at predetermined stall margins was presented to the pilot through a voice synthesizer.
	www.dfrc.nasa.gov /gallery/photo/OV-1C/HTML/EC83-22719.html (221 words)

	190E2.6 Stall Speed - ShopForum (Site not responding. Last check: 2007-11-05)
		I have a 92 190E2.6 and the one major complaint as far as performance is the lack of low rpm power from a standstill.
		Under wide open throttle acceleration from full stop, the car revs to about 2000 rpm and pauses against the converter stall speed and then begins to accelerate well as the revs pass 2500rpm.
		I was wondering if there is a converter with a higher stall speed to overcome this pause at 2000rpm or if advancing my camshaft +4 deg would improve low rpm intake flow to overcome this problem.
	www.mercedesshop.com /shopforum/showthread.php3?t=793 (420 words)

	Throttle Target for Stall Speed? - RC Groups
		Wondering if there is a general rule about throttle targets for stall speeds.
		Stall speed can vary due to many factors and to a large extent has little to do with throttle setting.
		Any manouvre including turns increases the speed at which an aeroplane stalls due to the increased wing loading and drag so its not possible to come up with such a throttle setting.
	www.rcgroups.com /forums/showthread.php?t=27279 (270 words)

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