An armor-piercing ( AP ) shell is a type of ammunition designed to penetrate armor.

While the 122mm armour piercing shell had a lower muzzle velocity than similar late German 7. 5 cm and 8. 8 cm guns, proving-ground tests showed that the 122mm AP shell could defeat the frontal armour of the German Panther tank, and the HE shell would easily blow off the drive sprocket and tread of the heaviest German tank or self-propelled gun.

A shell is a payload-carrying projectile which, as opposed to shot, contains an explosive or other filling, though modern usage sometimes includes large solid projectiles properly termed shot ( AP, APCR, APCNR, APDS, APFSDS and proof shot ).

* Penetration ( AP shell, meet angle 60 degrees ):

After the Second World War, the UK replaced AP shot with a HESH shell.

This was to eliminate the instability caused when firing the 20 lb AP shell with Charge Super at direct fire low elevation angles.

The complete Armor-piercing shot and shell | AP round of a 17 pounder

* Muzzle Velocity: 600 m / s ( MG FF ), 585 m / s ( FF / M with AP or HE ), 700 m / s ( MG FF / M with mine shell )

Attacks with HE were twice as accurate as with AP, possibly because the ballistics were a closer match to the. 303 in ( 7. 7 mm ) Browning machine guns used for sighting ( the HE shell was lighter and was fired at a higher velocity ).

* Armour penetration ( M72 AP shell, 457 m, at 90 degrees ): 60 mm

* Armour penetration ( M72 AP shell, 457 m, at 90 degrees ): 76 mm

* Armour penetration ( M72 AP shell, 457 m, at 90 degrees ): 76 mm

However, against armour its AP shell was the worst, penetrating only 68 mm of RHA at 500 yards ( 460 m ) and a 30 degree angle of attack, whereas the AP shells of the others penetrated between 57 mm and 76 mm in Normandy during 1944.

The AP shell for the 75 mm gun was a 15 lb ( 6. 8 kg ) projectile with a couple of ounces ( 60 g ) of HE filling propelled by a 2 lb ( 900 g ) charge to 2, 000 feet per second ( 610 m / s ).

In British service the AP shell was used without its explosive filling and as such was referred to as " AP Shot M61 ".

: The American style is used by most American newspapers, publishing houses and style guides in the United States and Canada ( including the Modern Language Association's MLA Style Manual, the American Psychological Association's APA Publication Manual, the University of Chicago's The Chicago Manual of Style, the American Institute of Physics's AIP Style Manual, the American Medical Association's AMA Manual of Style, the American Political Science Association's APSA Style Manual, the Associated Press ' The AP Guide to Punctuation and the Canadian Public Works ' The Canadian Style ).

Each plate is rated to stop a range of ammunition including 3 hits from a 7. 62 × 51 NATO AP round at a range of, though accounts in Iraq and Afghanistan tell of soldiers shot as many as seven times in the chest without penetration.

The church cites the AP Stylebook, which states, " The term Mormon is not properly applied to the other Latter Day Saints churches that resulted from the split after Smith ’ s death.

The access points ( AP ) are built in long-distance telephone exchanges ( LDTEs ), Russian fixed-line communication infrastructure which is present in every province.

Also Ms. Schaefer is the best AP World History teacher ever.

In the United States, Virgil and specifically the Aeneid were taught in the fourth year of a Latin sequence, at least until the 1960s ; the current ( 2011 ) Advanced Placement curriculum in Latin continues to assign a central position to the poem: " The AP Latin: Virgil Exam is designed to test the student's ability to read, translate, understand, analyze, and interpret the lines of the Aeneid that appear on the course syllabus in Latin.

An alternative characterization of PSPACE is the set of problems decidable by an alternating Turing machine in polynomial time, sometimes called APTIME or just AP.

This is due to differences in transmit power, and receive sensitivity, as well as distance, and location with respect to the AP.

Absolute pitch ( AP ), widely referred to as perfect pitch, is the ability of a person to identify or re-create a given musical note without the benefit of an external reference.

Absolute pitch ( AP ), or perfect pitch, is the ability to name or reproduce a tone without reference to an external standard.

Walter Cronkite, who started with United Press in Kansas City, gained fame for his coverage of World War II in Europe and turned down Edward R. Murrow's first offer of a CBS job to stay with UP, but who later went on to anchor the CBS Evening News, once said, " I felt every Unipresser got up in the morning saying, ' This is the day I'm going to beat the hell out of AP.

There is a chariot displayed at the AP State Archaeology Museum, Hyderabad, Andhra Pradesh.

In the United States, the TI-89 is allowed by the College Board on all calculator-permitted tests, including the SAT, some SAT Subject Tests and the AP Calculus, Chemistry, and Statistics exams.

AP Indy is the sire of 2007 Belmont Stakes winner Rags to Riches, the first filly to win at Belmont since 1905.

An MPI process is assigned to an AP in the flat parallelization, or to a PN that contains microtasks or OpenMP threads in the hybrid parallelization.

In DNA, this spontaneous deamination is corrected for by the removal of uracil ( product of cytosine deamination and not part of DNA ) by uracil-DNA glycosylase, generating an abasic ( AP ) site.

The resulting abasic site is then recognised by enzymes ( AP endonucleases ) that break a phosphodiester bond in the DNA, permitting the repair of the resulting lesion by replacement with another cytosine.

It is one of the Pancharama sites and is located near Kakinada in East godavari district, AP.

The museum's founding date is given in the AP interview / article by Sharon Cohen, which appeared in the Standard-Times on February 17, 2003, and is quoted in the IDS interview, see above.

The AP participation in Cooper City is 48 %, which makes it one of the highest AP participation school in Broward county.

The AP called this " one of the slickest political maneuvers in international athletic history ", and wrote that the Games would now be " like Hamlet without the celebrated Dane in the cast.

Under player-manager Jon Chambers ( ex Aston Villa ) in 1983 Harriers were promoted to the Alliance Premier League ( now the Conference ) after finishing second to AP Leamington, who were refused entry on ground facility issues.

At the time of its 20th anniversary in 2005, AP had grown to an average size of 112 pages an issue and now averages between 198 to 220-plus pages a month.

In 2008 after the breaking-up of the governing coalition, due to the rising clashes between AP and United Left, under the new electoral system, the party decided to join PDCS in the centre-right Pact for San Marino coalition for the 2008 general election, The electoral coalition won 35 seats out of 60 in the Grand and General Council in the Sammarinese parliamentary election, 2008 gaining 54. 22 % of the national vote and a governmental majority of 5 and has become the new government of San Marino and as a result the Popular Alliance which itself gained 7 seats out of the 35 the coalition gained and 11. 52 % of the national vote, as part of the coalition, is now part of the official new government with Assunta Meloni becoming one of the two Joint Captains Regent of San Marino.

He also served as Chairman of one of the national state pension funds, 5: e AP Fonden ( now 3: e AP Fonden ), as well as being a member of the Advisory Board of the Swedish Energy Commission.

AP courses are now offered for 22 disciplines.

* AP 201, 202, 212, 214, 221 and now AP 203 ed 2 for technical drawings with extension in AP 212 and 221 for schematic functionality

Although the UCD had been joined by José María de Areilza and Antoni de Senillosa, who had defected from the AP, the UCD party group had now been reduced to 124 deputies-52 short of a majority.

Since then, the PSOE and the AP, now known as the People's Party, have been the dominant parties in Spanish politics.

He now serves as a media and internet analyst for many media outlets including AP, UPI, USAToday, Toronto Star, Ottawa Citizen, NPR / PBS, Financial Post, and the New York Times.

Weapons are now capable of attack more than once during any battle, provided that the unit initiating the attack has sufficient AP and weapon ammunition.

In developing the ULTRA AP, GTRI's scientists and engineers assembled a team of industry professionals that included GTRI employee Scott Badenoch, who is now an advanced development and racing professional ; Tom Moore, former vice president of Liberty Operations, Chrysler's advanced engineering center ; Walt Wynbelt, former program executive officer with the U. S. Army Tank Automotive and Armaments Command, and Dave McLellan, former Corvette chief engineer for General Motors.