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Q: What date did Harrison lingle invente the pneumatic?
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Diploma in mechanical engeeniring date sheet 2009?

yes,to see the datesheet of 2009 batch


How much do spirit airlines mechanics earn?

I have been an A&P mechanic with Spirit Airlines since 2002 and within two years I was making $31.30hr which is the industry norm to date. That is until Jan 4 2006 when the company gave all the mechanics a 25% + pay cut. I am now making 24hr and have been with no pay increases to date. Also, our health benefits increased with less coverage. In addition our 401k contributions have been reduced. With that said, the newly hired mechanics start at $16.00 base plus $1 per license. With no hope of a pay increase.


What does number mean for Briggs engines?

Series # (e.g. 700, 825, 1150, etc.) is the gross torque rating (i.e. 1150 = 11.5 ft lbs.) (newer torque rated engines only) Model # (e.g. 095702) is the model designation signifying major mechanical features. In this case: 09 cubic inches, design type 5, crankshaft orientation 7 (vertical), bearing/mount type 0 (plain bearing, no flange mount), starter type 2 (Recoil (pull-type)). Type # (e.g. 0536-B1) identifies other mechanical features & specs, color, decals, top rpm, etc. Code # (e.g. 08102801) indicates date and location of manufacture (i.e. yy/mm/dd/location = Oct. 28th, 2008, at plant number one)


Who was the inventor of the first variable-pitch propeller?

Wallace R. A MAN NAMED HERMAN SIMSHAUSER FIRST HAD A PATENT ON THE REVERSE PITCH PROP. HE WAS FROM RAVENNA OHIO.TWO WEEKS PRIOR TO GETTING THAT PATENT, HE RECEIVED A PATENT ON A VARIABLE PITCH FEATURE THAT ADJUSTED BLADES AUTOMATICALLY ACCORDING TO THEIR ROTATION SPEED. I'M NOT SURE OF THE EXACT DATE, BUT I DO KNOW IT WAS DURRING THE KENNEDY ERA. I SAW IT IN AN OLD LOCAL PAPER FROM THERE THE SAME YEAR THAT CAMBODIAN PRIME MINISTER NORODOM SIHANOAK SPOKE AT KENT STATE UNIVERSITY. This is the real-deal: On 7 February 1922 Wallace Rupert Turnbull patented the Variable Pitch Propeller. Considered one of the most important developments in the history of aviation, this mechanism allowed for change in blade pitch to suit flying conditions and airplane weight. When Turnbull was posthumously inducted into the Canadian Aviation Hall of Fame in 1977, his citation read: "The patient application of his aeronautical theses to a number of problems unique to flight, and more especially his invention of the successful variable pitch propeller, have been of outstanding benefit to Canadian aviation."


What is a Hallowell heat pump?

Excerpt from: = Will Utilities Warm Up to Low-Temperature Heat Pumps? = 2.3.06 Jay Stein, Managing Director, E Source Research, Plattshttp://www.energypulse.net/centers/article/article_print.cfm?a_id=1199 What Is a Low-Temperature Heat Pump? We have defined the low-temperature heat pump (LTHP) as an air-source unit, capable of providing both heating and cooling, that:Operates down to an outdoor temperature below –10°F. It’s rare for a conventional air-source unit to operate below this temperature.Meets or exceeds its rated capacity at 0°F. Conventional heat pumps typically put out roughly half of their rated capacity at this temperature.Exhibits a coefficient of performance (COP) of at least 2 at 0°F. Conventional heat pumps typically exhibit COPs of 1.7 or less under these conditions.LTHPs incorporate several recent technological innovations in order to achieve this performance. The most significant one is a sophisticated microprocessor control system that until recently would have been far too expensive to include in a mass-produced residential air-conditioning product. These control systems, working in concert with other features, enable LTHPs to solve some persistent problems for northern electric utilities by: Improving on the efficiency of electric-resistance and conventional heat pump space heaters,Reducing the peak loads imposed on transmission and distribution systems when large stocks of conventional heat pumps simultaneously call for backup electric-resistance heating,Competing more-effectively with natural gas and other fossil fuel–burning furnaces for space-heating load, andProviding a less costly and less complex alternative to GSHPs.Low-temperature heat pump technology clearly has much to offer to the electric utility industry. The Playing Field David Shaw, who used to work for Carrier Corp., started conceptualizing the first LTHP in 1995. He set up his own research laboratory—Shaw Engineering—to create an air-source heat pump for cold climates that would eliminate the need for electric-resistance backup heating in very cold weather. After a few years, he received strong interest from Northeast Utilities, which was working with Nyle Special Products (a small specialist heat pump company based in Bangor, Maine) to develop a heat pump water heater. Shaw then licensed the technology to Nyle, allowing it to develop a product based on his work. Nyle built four prototypes that were tested over the winter of 2002–2003. Nyle dubbed its product the Cold Climate Heat Pump, and we estimate that somewhere between 150 and 200 units have been delivered to customers to date—with around 20 of the installations located in Canada and the rest in the U.S. The performance of these units was decidedly mixed, with some operating demonstrably well and others experiencing problems due to inadequate installation, poor quality control, and flawed control strategies. In early 2005, Shaw decided not to renew Nyle’s license to the technology, and he began negotiating with other manufacturing partners. Nyle, however, retains the trademark to the Cold Climate Heat Pump name and claims that it will develop a similar product that can be manufactured without violating any of Shaw’s patents. In July 2005, Duane Hallowell, a former Nyle employee who led that company’s efforts to commercialize the Cold Climate Heat Pump, acquired the rights to the patent for David Shaw’s LTHP technology. Hallowell says that his company, Hallowell International, will spend the rest of 2005 perfecting the product and begin releasing 2,000 beta units for a pilot study in the third quarter of 2006. A hallowell heat pump (or All Climate Heat Pump) is a heat pump designed specifically for heating while still providing high efficiency cooling. This product was invented in 1995 by a former carrier corp engineer. Now commercially available ( see www.gotohallowell.com ). It has been studied though several organizations to show much greater comfort, significantly reduced defrosts compared to traditional systems, and can maintain high heating capacities in northern climates at temperatures as low as 30 below zero while keeping efficiencies above 200%. There are three new studies coming out in the coming months showing the results of an 8 state cooperative research study by the national rural electric cooperative association. The system is only released as air to air for about $6500.00 and installs like a central air conditioner. My wife and I were considering a geothermal but the price to install ran about 30k for a 3.5 ton system for our 2500sf home. We called Hallowell and asked for references and spoke with a customer of theirs on Cape Cod. They heated 3000sf home for about $700.00 for 2006 / 2007, with an electric rate of 17 cents per kwh. This could be a very disruptive technology finally offering an alternative to fossil fuel

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