The AAM-N-6a was similar to the-6, but used a new Thiokol liquid-fuel rocket engine for improved performance.

The AIM-7F, which entered service in 1976, had a dual-stage rocket motor for longer range, solid-state electronics for greatly improved reliability, and a larger warhead.

The accuracy problem was greatly improved in 1844 when William Hale modified the rocket design so that thrust was slightly vectored, causing the rocket to spin along its axis of travel like a bullet.

On the other hand LACE-like precooled airbreathing designs such as the Skylon spaceplane ( and ATREX ) which transition to rocket thrust at rather lower speeds ( Mach 5. 5 ) do seem to give, on paper at least, an improved orbital mass fraction over pure rockets ( even multistage rockets ) sufficiently to hold out the possibility of full reusability with better payload fraction.

Tests of the improved Pewee 2 design were cancelled in 1970 in favor of the lower-cost Nuclear Furnace ( NF-1 ), and the U. S. nuclear rocket program officially ended in spring of 1973.

The original rocket design had the guide pole side-mounted on the warhead, this was improved in 1815 with a base plate with a threaded hole.

This required the development and equalization of three new liquid-fueled rocket engines, the J-2, the F-1, and the H-1 ( rocket engine ); in addition, an existing engine, the RL10, was improved for use on Saturns.

These included upgraded seeker hardware and software to provide improved performance against advanced threats and replacement of the longitudinally mounted electronics boards with a circular design which reduced the volume occupied by the electronics allowing space for a longer rocket motor.

This was followed by the RPzB 54 / 1 with an improved rocket, shorter barrel and a range increased to about 180 meters.

This was an improved version of the German V-2 rocket manufactured by the Soviet Union.

In its Russian designation РТ stands for " ракета твердотопливная ," Raketa Tverdotoplivnaya (" solid fuel rocket "), while УТТХ-for " улучшенные тактико-технические характеристики ," uluchshenniye taktiko-tekhnicheskie kharakteristiki (" improved tactical and technical characteristics ").

It arranged its components in more logical fashion than the Firestreak ( which had its warhead in the tail ), with an improved " Violet Banner " seeker, " Green Garland " IR fuze, and a more powerful " Linnet " booster rocket.

Many rounds were upgraded with improved, longer-duration rocket motors, the upgraded weapons sometimes known ( apparently only semi-officially ) as AIR-2B.

It features an improved rocket motor and a new seeker head.

The system has better ergonomics and uses an improved rocket with better ballistics and terminal effect and with a maximum range of 1, 700 m. The " Shmel-M " is also known as RPO PDM-A ( Rus.

Viking 8, 6 June 1952, first rocket of improved airframe design, lost when it broke loose during static testing, and flew to before ground commanded cut-off.

The first rocket developed by the BSFEGmbH was an improved version of the Kumulus, which was first launched on November 19, 1962 and reached a height of 50 kilometres.

The main differences from the Strela-3 included an optional Identification Friend or Foe system to prevent firing on friendly aircraft, an automatic lead and super elevation to simplify shooting and reduce minimum firing range, a slightly larger rocket, reduced drag and better guidance system extend maximum range and improve performance against fast and maneuverable targets, an improved lethality on target achieved by a combination of delayed impact fuzing, terminal maneuver to hit the fuselage rather than jet nozzle, an additional charge to set off the remaining rocket fuel ( if any ) on impact, an improved resistance to infrared countermeasures ( both decoy flares and ALQ-144 series jamming emitters ), and slightly improved seeker sensitivity.

As a result, he was sent to a hospital in Arizona until his health improved enough for him to come back to Washington to work in the Government service.

This resulted in an improved appearance, but was followed by an increase in printing cost that necessitated the institution of major economies to keep within the total of allocated funds.

A red filter, Zeiss barrier filter with the code ( Schott ) designation BG 23, was also used in the ocular lens assembly as it improved the contrast between specific and nonspecific fluorescence.

The latter now furnishes the area with electricity distributed from a modern sub-station at Manchester Depot which was put into operation February 19, 1930 and was improved in January 1942 by the installation of larger transformers.

Miss Vaughan was back in top form, somehow mellowed and improved with the passage of time -- like a fine wine.

On Saturday, the orchestra was sensibly situated down on the field, the stage floor was apparently in decent condition for dancing, and the order of the program improved.

The artists seem to have been dominated by geometrical pattern and order, and this was improved when classical art brought a greater freedom and economy.

This close approximation to the modern value of − 273. 15 ° C for the zero of the air-thermometer was further improved upon in 1779 by Johann Heinrich Lambert, who observed that − 270 ° C might be regarded as absolute cold.

Also during his reign taxes were lightened ; literature, art and science were encouraged ; the lot of the soldiers was improved ; and, for the convenience of the people, loan offices were instituted for lending money at a moderate rate of interest.

Alfred was a learned and merciful man who encouraged education and improved his kingdom's legal system and military structure.

The Russian A-35 anti-ballistic missile system for defense of Moscow was established in 1971, has been improved since, and is still active.

OCS was eventually followed by the modestly improved Enhanced Chip Set ( ECS ) in 1990 and finally by the partly 32-bit Advanced Graphics Architecture ( AGA ) in 1992.

The bias of his mind was to sculpture, and the facilities afforded for the gratification of this predilection in the workshop of his grandfather were eagerly improved.

It seems likely that memory constraints were at the root of these differences, as the Apple II ROM had only 10 kilobytes available for the interpreter, and the improved hi-res graphics support was clearly a higher priority.

A special version of NewDos / 80, ( an improved TRS-DOS compatible Disk operating system ) was used to support these disk capacities when using the TRS-80 compatibility mode.

The display logic and resulting display ' snow ' was irritating, as was the missing lower case support, the CPU speed could be improved, the quality and layout of the keyboard was bothersome, and the floppy disk capacity and reliability was low.

After selling a few kits, MCP became convinced there was a much bigger market for an improved model sold as a completed working system.

Because the original designer had left the company another employee completely redesigned most of the system, ( adding a display snow remover circuit, true 80 / 64 column text mode support, ( with different size letters for TRS-80 and CP / M mode, so that in TRS-80 mode the full screen was also used, not just a 64x16 portion of the 80x25 screen ) with an improved font set ( adding " gray scale " version of the TRS-80 mozaik graphics and many special PETSCII like characters ), and a more flexible and reliable floppy disk controller and keyboard interface plus many other small improvements ), also an enclosure was developed for the main computer system, ( in the form of a 19-inch rack for the Eurocards ) and for two floppy disk drives and the power supply.

Some also claim it to be the oldest subway tunnel in the world, as it was built by the cut and cover method under a city street, specifically for the purposes of improved public safety, attaining grade separation and enhanced railway operations.

One of the earliest rifled cannon was the breech-loading Armstrong Gun — also invented by William George Armstrong — which boasted significantly improved range, accuracy, and power than earlier weapons.

One significant innovation was the use of a fire-tube boiler, invented by French engineer Marc Seguin that gave improved heat exchange.

* Steam power – The improved steam engine invented by James Watt and patented in 1775 was at first mainly used to power pumps for pumping water out of mines, but from the 1780s was applied to power other types of machines.

Additionally, he did fundamental work in the field of optics, invented an improved version of the refracting telescope ( the Keplerian Telescope ), and mentioned the telescopic discoveries of his contemporary Galileo Galilei.

Cousteau was not satisfied with the length of time he could spend underwater with the Le Prieur apparatus so he improved it to extend underwater duration by adding a demand regulator, invented in 1942 by Émile Gagnan.

Jerry recently invented the " last word " in trumpet mouthpieces ... the Superchops 3, which is more improved from the others, Superchops 1 and Superchops 2.

M. George Craford, a former graduate student of Holonyak, invented the first yellow LED and improved the brightness of red and red-orange LEDs by a factor of ten in 1972.

‪ File: 13 Portrait of Robert Hooke. JPG ‬| Robert Hooke ( 1635-1703 ): formulated the law of elasticity, invented the balance spring, the spiral spring wheel in watches, the Gregorian telescope, and the first screw-divided quadrant, constructed first arithmetical machine, improved cell theory with the microscope ‬‬‬‬‬

File: Tesla3. jpg | Nikola Tesla ( 1856-1943 ): developer of modern alternating current ( AC ) flow, improved on the dynamo, patents and theoretical work formed the basis of wireless communication and the radio, transformer and electric bulb and invented the Tesla coil.

Several Baseball Prospectus authors have invented or improved upon widely relied upon sabermetric measures and techniques.

It was invented by Samuel Hunter Christie in 1833 and improved and popularized by Sir Charles Wheatstone in 1843.

He invented the world's first water-powered armillary sphere, to represent astronomical observation ; improved the inflow water clock by adding another tank ; and invented the world's first seismometer, which discerned the cardinal direction of an earthquake away.

At the start of the 18th century, Jethro Tull, an English gentleman, introduced an improved grain drill that systemized the planting of seed and invented a horse-drawn weed hoe, the two of which allowed fields once choked with weeds to be brought back to production and seed to be used more economically.

Shu chancellor Zhuge Liang invented the wooden ox, suggested to be an early form of the wheelbarrow, and improved on the repeating crossbow.

Garnerin also invented the vented parachute, which improved the stability of the fall.

The laser printer was invented at Xerox in 1969 by researcher Gary Starkweather, who had an improved printer working by 1971 and incorporated into a fully functional networked printer system by about a year later.

As an instrument maker, he improved the reflecting circle ( invented by Tobias Mayer ) and the repeating circle ( invented by his assistant, Etienne Lenoir ), the latter used to measure the meridian arc from Dunkirk to Barcelona by Delambre and Méchain.

He observed, measured, dissected, built models and employed, invented and improved a variety of instruments.

The wireless telegraph was invented in the last half of the 1890s, and by the turn of the century all major navies were adopting this improved communications technology.

The English version was invented in 1829 by Sir Charles Wheatstone and a patent for an improved version was filed by him in 1844.

* 1000-Volvelle, an early paper analog computer, invented by Arabic physicians and improved by Abu Rayhan Biruni for use in astronomy.

In 1829, Scots inventor Sir Isaac Holden invented an improved version of Walker's match and demonstrated it to his class at Castle Academy in Reading, Berkshire.

A third company, the Danish Bang & Olufsen, invented an improved system for improving headroom at high frequencies, to reduce tape saturation despite lower bias levels.