However, the real challenge in aviation is producing FAA-certified alternatives to the standard reciprocating engines that power most small general aviation aircraft.

However, in the case of boxer engines with fewer than six cylinders, unbalanced moments ( a reciprocating torque also known as a " rocking couple ") are unavoidable due to the " opposite " cylinders being slightly out of line with each other.

However, a ducted fan may be powered by any source of shaft power such as a reciprocating engine, Wankel engine, or electric motor.

However, reciprocating compressor have multiple cylinders ( typically, anywhere from two to six ), while scroll compressors only have one compression element.

However, the efficiency of a scroll compressor that does not have a discharge valve begins to decrease as compared to the reciprocating compressor at higher pressure ratio operation.

However, many refrigeration applications rely on reciprocating compressors, which appear to be more reliable in these applications than scroll compressors.

However, scrolls do not have suction valves, which is one of the most vulnerable parts of the reciprocating compressor to liquid flooding.

However, with engine rule changes for the 1990 season and the launch of the new Aston Martin Volante model, Ford provided the limited supply of Cosworth engines to the Jaguar cars racing team.

However, raising the engine speed too high while engaging the clutch will cause excessive clutch plate wear.

However, a Diesel engine will be more efficient overall since it will have the ability to operate at higher compression ratios.

However, the gasoline engine, with its new emission-control devices to improve emission performance, has not yet been significantly challenged.

However, changing exchange rates doubled the cost of the engine and transmission over the life of the VL.

However, this failed to take into account the 600 jobs that Holden previously announced would be shed when production of the Family II engine is set to wrap up in late 2009.

However by 1783 the more economical Watt steam engine had been fully developed into a double-acting rotative type, which meant that it could be used to directly drive the rotary machinery of a factory or mill.

However Id Tech 4 had far fewer licensees than the Unreal Engine from Epic Games, due to the long development time that went into Doom 3 which Id had to release before licensing out that engine to others.

However, a turbine's power output and efficiency both drop dramatically with rotational speed, unlike a piston engine, which has a comparatively flat power curve.

However the use of modern engineering materials coupled with alternative engine configurations has meant that these types of system are now a cost effective opportunity.

However, programmers taking advantage of these changes lost backwards compatibility with the unmodified Quake engine.

However, work was very slow on the engine, since John Carmack, the main programmer of Quake, was not only developing a full 3D engine, but also a TCP / IP networking model.

However, engine efficiency is not the whole story.

However, as speeds rise, the resultant exhaust speed goes down, and the overall vehicle energetic efficiency rises, reaching a peak of around 100 % of the engine efficiency when the vehicle is travelling exactly at the same speed that the exhaust is emitted.

However, ROTT's engine was still the first to pioneer myriad features which would be found in many later games, such as panoramic skies, simulated dynamic lighting, fog, bullet holes, breakable glass walls, level-over-level environments ( made possible by " gravitational anomaly disks "; suspended objects that collectively form stairs, floors, etc.

However, even though it used the WebKit engine, the Android built-in browser did not support SVG prior to v3. 0 ( Honeycomb ).

However, since the charge in the cylinders is being pushed in by this air pressure, it means that the engine will normally produce only half-power at full throttle at this altitude.

However, in later versions Mercedes changed to a 60 ° angle, making the engine more compact and allowing elimination of the balancing shaft.

However, the scripting engine will continue to be shipped with future releases of Microsoft Windows and IIS.

However, problems with apex seal wear led to frequent engine failure, which led to large warranty costs for NSU, and curtailed further Wankel engine development.

However, as gas pressure participates in seal efficiency, racing a Wankel engine at high rpm under no load conditions can destroy the engine.

However, instead of comparing engine performance, the gross aircraft performance as complete systems can be compared using first principle definitions of power, force and work with the requisite considerations of constantly changing effects like drag and the mass ( of the fuel ) in both systems.

However, block ciphers may also be used as building blocks in other cryptographic protocols, such as universal hash functions and pseudo-random number generators.

However most large power grids also use diesel generators, originally provided as emergency back up for a specific facility such as a hospital, to feed power into the grid during certain circumstances.

However, better support for coroutine-like functionality is provided in 2. 5, by extending Python's generators.

However, in the case of a finitely presented group we know that not all the generators can be trivial ( Any individual generator could be, of course ).

However, lack of randomness in those generators or in their initialization vectors is disastrous and has led to cryptanalytic breaks in the past.

However, it is still possible to implement coroutines on top of a generator facility, with the aid of a top-level dispatcher routine ( a trampoline, essentially ) that passes control explicitly to child generators identified by tokens passed back from the generators:

However, in any case the differences between the theoretical model of perfect random choices used to design the algorithm and the capabilities of actual random number generators are vanishingly small.

( However, note that scale transformations are included in conformal transformations, in general: the latter including additional symmetry generators associated with special conformal transformations.

However, these test generators, combined with low-overhead DFT techniques such as partial scan, have shown a certain degree of success in testing large designs.

However, even in countries with a reliable mains supply, many buildings are still fitted with modern diesel generators for emergency use, such as hospitals and pumping stations.

However, generators are usually used because of the power requirements for amplifiers and the ease of refueling versus recharging a battery.

However Lazard proved that it has a very simple structure: it is just a polynomial ring ( over the integers ) on generators of degrees 2, 4, 6, ... ( where c < sub > i, j </ sub > has degree 2 ( i + j − 1 )).

However, that proved perilously frustrating considering the first attempt found the ship's largely untested anti-gravity generators suddenly breaking free and causing the ship to plummet to the launch area with some damage.

However, the Fort Erie area south of Niagara Falls stayed on the remaining 25 Hz generators until 1966, and this area had electricity throughout the 1965 Eastern Seaboard Blackout.

) However, two different spontaneously broken generators may now give rise to the same Nambu – Goldstone boson.

However, in contrast to the case of internal symmetry breaking, when spacetime symmetries are broken, the order parameter need not be a scalar field, but may be a tensor field, and the corresponding independent massless modes may now be fewer than the number of spontaneously broken generators, because the

However, there are occasional human-drawn floats equipped with generators, record players, amplifiers and loudspeakers.

However, a number of embedded generators are still using out of date control software that is not compliant with G59 / 2, as it erroneously trips them ( as per the previous standard, G / 59, in force when they were designed and specified ) if frequency falls below 49. 5 Hz for a few seconds.

However, these parser generators usually include the capacity to reference global variables and / or fields from within any given grammar rule, meaning that this is not a pure S-attributed approach.

However, Captain Maximilian Jenius devises a plan to use the fold generators on the chambers and the plan was carried out by Gamlin and Docker, the leader of the Emerald Force.

However newer models have internal circuitry that allow units without power factor correction to run on light power generators.

However, because random number generators are only pseudo-random, the entropy of possible monsters would be limited by the pseudo-random seed.

However, no testing at those aggressive conditions or size has yet occurred, and there are no large MHD generators now under test.