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Luna Park
The Roulettes Are Coming
Thursday, 23 February 2012 08:48 | Written by Mike Cahill |
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He's taking a GLX or SPARK with him to record all of the data. It will have both acceleration and GPS on it so we can geotag the whole trip as well as get the acceleration data. See http://www.airforce.gov.au/roulettes/team.aspx for details on the aerobatics team. See http://www.vicphysics.org/lunapark.html for more details. Share this post
LUNA PARK VCE Physics Day
Thursday, 24 February 2011 08:52 | Written by Mike Cahill |
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With students being able to see the laws of physics in operation in a fun enviroment, the results can be amazing. Concepts that were once foreign are now easy to understand and the students can answer the age old question every student has asked "When will I ever use this in the outside world?" We cannot encourage schools to participate in this event enough. As in past years we will have dataloggers available free of charge for schools to use (bookings essential) and also provide free wifi for teachers and Students alike to dowload the latest SPARKVue software free of charge to their iPads, iPhones and iPod Touch. The SPARKVue App utilises the internal accelerometer to measure x,y and z axis Acceleration plus measures the acceleration along the resultant. It is a great day out of the classroom and gives your students the edge. We can't wait to see you there.
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The Roulette's parameters for performing a loop maneuver
Thursday, 23 February 2012 09:04 | Written by Mike Cahill |
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The conversion for knots to kilometers per hour is 1 knot =1.852 km/hr The parameters for a loop are 220 knots (407.44 Km/hr) indicated air speed (KIAS) and 4.0 G. for both entry and exit. This requires 1800 feet (548.64 m radius =274.32m) of vertical airspace. The aircraft slows over the top, Kinetic energy being transferred to potential energy, to a minimum of about 120 KIAS ( 222.24 Km/hr). The aim is to describe a loop at constant pitch rate, which requires a little more backstick over the top, because the flight controls become less effective as the speed decreases. Control effectiveness is proportional to the Square of the indicated a speed. Because the aircraft slows over the top, the centripetal acceleration required to maintain constant pitch rate decreases. Usually about 1.5 G. registers on the meter, and don't forget earth supplies an additional 1.0 G. vertically down at this stage. Additionally, the control force required at the top is less. As the aircraft slows the controls become lighter but less effective. The final elements to the equation is the chemical energy being converted into Kinetic energy by means of a turbo-prop engine and four bladed propeller. The engine operates at roughly 75 percent power and delivers about 700 shaft horsepower during the maneuver. The loop isn't a perfect vertical circle, but for all intents and purposes its pretty close. You can tell if you got it right in two ways; if trailing smoke, as the Roulette's do, you can visually judge where you have been and join the smoke trial, or more conventionally, on the exit you will feel a bump when you hit the wake you left behind at the beginning of the loop. Share this post
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On the Wednesday of the Physic's days at Luna Park one of the RAAF roulette team will be doing aerobatics over Luna Park.
Cider House Tech and PASCO are once again delighted to be apart of the VCE Physics Days at Luna Park in 2012. Our continued involvement underlines our commitment to providing educators with innovative solutions for teaching science.
The VCE Physics Days at Luna Park are held on the Tuesday, Wednesday and Thursday of the first week in March each year. In 2012: March 6th - 8th and in 2013: March 5th - 7th.
Another Extra Feature this year is an aerobatic performance above Luna Park by one of the RAAF team, the Roulettes. However this will only be on the Wednesday. More details to follow.
