What is the reason? Are the professionals prosecuted for sharing information?
Saudi Arabia was not in a hurry; it spent years evaluating different types of MBT before selecting a winner among the competing products. Saudi Arabia selected the original M1A2 Abrams MBT after a lengthy evaluation process. No such thing as Yankees know how to please them.
Point is that you don't just give up after a single trail event. You grant competitors sufficient time to address potential shortcomings in their products and polish them before you pick one. Choosing the right product takes time and thorough deliberation.
As for the armor, export version of an M1 series MBT is equipped with the standard composite armor package. The relatively tougher depleted uranium armor package is for MBT in the service of US armed forces only; it is not for export.
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Sand ingestion was identified as a shortcoming of the AGT-1500 gas turbine engine during its trials in the desert environments but this shortcoming have been addressed with the development and implementation of air filters in it. Maintenance requirement of these air filters is that they should be cleaned after hours of operations in a desert environment [manageable]. Later on, (self-cleaning) air filters have been introduced. These Air filters minimized the need to carry another engine (for backup) during military operations.
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The M1 series MBT were originally equipped with the AGT-1500 gas turbine engine. However, AGT-1500 is being phased out and replaced by the newer and more robust LV 100-5 gas turbine engine in current times.
LV 100-5 Gas Turbine
The LV 100-5 gas turbine engine has been designed to replace to AGT 1500 turbine. In its time, the AGT 1500 turbine was the best out there. Currently, they are far too expensive to use and maintain. Production of the AGT 1500 turbine ended in 1992 due to those reasons.
The LV 100-5 gas turbine was designed in 1990’s, with production beginning in 2003. The idea was to make a more cost efficient, reliable, and lighter engine, while still offering 1500 hp.
Source:
Military Tanks | Engaged in Thermodynamics
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More importantly, there is no such thing as a perfect engine. You think that diesel engines do not have shortcomings?
A diesel engine is relatively heavier, noisier, more maintenance-intensive, more vulnerable to harsh environmental conditions then a gas turbine engine. A diesel engine is also not fuel flexible like a gas turbine engine.
US have extensively tested both types of engines and found none to have a significant advantage over the other. In the end, budget and preferences dictate a choice.
Ukranian T-84 Oplot-M? It have a diesel engine, right?
1. The "missed several targets" part:
Even a state-of-the-art machine won't produce good results if its operators are incompetent and/or not familiar with its mechanics and maintenance requirements. It is unclear who manned the M1A1 Abrams MBT unit during its trials in Bahawalpur.
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M1A1 and M1A2 Abrams MBT are (technically) designed to be
highly accurate in the matters of target acquisition and engagement. Technical data affirms this and I can share it with you if you are interested.
During combat situations; M1 series MBT have successfully struck (moving) targets from distances in excess of 2000 m [during poor visibility conditions]. Moreover, recent technological enhancements have significantly increased the real-time target engagement capacity of M1A1 and M1A2 models; these newer configurations are known as M1A1D and M1A2 SEP V3.
M1A1D and M1A2 SEP V3 configurations represent the epitome of excellence in MBT design and capabilities but their technicalities are largely classified and these configurations are meant for US armed forces only. All (legacy) M1A1 and M1A2 models are to be converted to M1A1D and M1A2 SEP V3 standards with passage of time to meet the challenges of the near future.
Only Australia have received M1A1 Abrams (AIM) MBT which is equivalent of M1A1D in the inventory of US armed forces.
2. The "engines overheated" part:
The climatic and geographical conditions of Cholistan desert are harsh but this is true for any major desert environment in the world. In the Cholistan desert, temperatures commonly approach 120 F during the summer season but nights are generally comfortable.
FYI: There is a region in US that is known as Death Valley; temperatures can approach 140 F during the summer season in this region. This region have one of the harshest climatic and geographical conditions in the world and few people have the will to inhabit it. However, its views may deceive you.
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M1 series MBT can successfully operate in all kinds of weather conditions in the world. Documented records affirm this.
During combat situations; M1A1 Abrams MBT and M1A2 Abrams MBT have endured harsh climatic and environmental conditions (including sandstorms). Sometimes, climatic and environmental conditions were so harsh that they would halt air-based assaults and ground units had to do without them.
For example, the (famous)
Battle of 73 Easting took place during sandstorm conditions:
By contrast, U.S. troops fought extremely well. At 73 Easting, for example, the 2nd ACR maintained a tight, efficient combat formation throughout an extended approach march, and did so in the midst of a sandstorm, in hostile territory, over unfamiliar terrain, and without significant losses to mechanical breakdown or logistical failure en route. Its crews' gunnery was exceptional, outperforming peacetime proving ground standards for both the M1 and the Bradley. The first three kills by Eagle troop were recorded in three shots by a single M1 over an interval of less than ten seconds. As a whole, 182 of 215, or 85 percent, of the shots fired by 2nd ACR crews struck their targets at ranges of up to 2000 meters, under combat conditions.(76) Similar results were obtained by U.S. forces throughout the KTO.
Source:
Victory Misunderstood: What the Gulf War Tells Us About the Future of Conflict - The RMA Debate
Sandstorms that occur in Iraq are notorious for their intensity. Have a look:
3. The "optics failed" part:
I don't know much about the temperature tolerance capacity of the optics of the M1 series MBT but they are unlikely to malfunction during harsh climatic and environmental conditions. Otherwise, this shortcoming would have disastrous consequences for the M1 series MBT during combat situations.
SOP is that a user manual is issued to the crew of M1 series MBT (by the authorities) that contains instructions for maintenance of the on-board equipment of M1 series MBT during various environmental conditions. Here is an example:
http://asktop.net/wp/download/GTA43-01-008.pdf
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Now, coming towards the revelations of the trails in Bahawalpur:-
If the crew was Pakistani, it may have faltered due to lack of familiarity, training and understanding of the internal mechanics of the MBT in question. Moreover, if the optics malfunctioned, then this could have further hindered the ability of the crew to achieve good results with the MBT in question. Finally, if the engine was not equipped with the recommended safeguards, then this might have caused breakdowns. This is what I gather from your account.
I get the impression that US was being careless about potential shortcomings of its product or deliberate. Moreover, political issues might have prevented additional trials. Steven Zaloga revealed that US backed out from the deal due to political disagreements.
However, I would caution fellow Pakistani from jumping to conclusions about the quality of M1 series MBT on the basis of this single event.
Available evidence suggests that M1 series MBT are a success story.
Whatever issues existed at one time, they have been addressed.
Here is a good summary:
Although fielded in 1980, the Abrams remained untested for over 10 years. When Iraq invaded Kuwait many critiques of the high production cost of the Abrams predicted that America's "supertank" would fall victim to the sand and long months of continuous operation without the luxury of peacetime maintenance facilities. They doubted the combat survivability of the extensive turret electronics. They would soon be proven wrong.
Immediately following President Bush's decision to commit U.S. forces to the Gulf region in defense of Kuwait and Saudi Arabia, American armored units began the difficult process of relocating to the threatened area. Due to the shear size and weight of the Abrams, the C-5 Galaxy, the largest cargo aircraft in the U.S. Air Force inventory, was only able to handle one tank at a time. This meant that nearly all of the Abrams tanks deployed in the Gulf War were shipped by cargo ship. Although slow in coming, the arrival of the Abrams was much welcomed by Allied forces, as it is capable of defeating any tank in the Iraqi inventory.
The Iraqi Army had a considerable array of tanks, mostly purchased from the former Soviet Union. Chief among these were about 500 T-72's. These modern Soviet tanks were armed with an excellent 125mm smoothbore weapon and had many of the same advanced features found on the Abrams.
Despite it's advanced design, the T-72 proved to be inferior to the M1A1's deployed during the Gulf War, and compared more closely with the older M60A3 tanks used there by the U.S. Marine Corps. In addition, Iraq had a number of earlier Soviet models: perhaps as many as 1,600 T-62 and about 700 T-54, both of which were developed in the 1960's. These tanks were widely regarded as clearly inferior to the Abrams, but were expected to be highly reliable mechanically. Of course, our allies each brought to the fray their own tanks: the British Challenger and the German Leopard are two superb examples of state-of-the-art armor technology. All in all, the Gulf War provided military tacticians with an opportunity to evaluate developments in tank design that had not been available since World War II.
For months, the American Army had practiced, patrolled and maneuvered in their Abrams tanks, putting thousands of miles and hundreds of hours into their machines. So far they had performed admirably. In fact, in many units, equipment downtime was actually lower that it had been state-side! As diplomatic options failed, one by one, and tensions mounted, it became clear that the real test of this vehicle was finally at hand.
In his book "Desert Victory - The War for Kuwait", author Norman Friedman writes that "The U.S. Army in Saudi Arabia probably had about 1,900 M1A1 tanks. Its ability to fire reliably when moving at speed over rough ground (because of the stabilized gun mount) gave it a capability that proved valuable in the Gulf. The Abrams tank also has… vision devices that proved effective not only at night, but also in the dust and smoke of Kuwaiti daytime. On average, an Abrams outranged an Iraqi tank by about 1,000 meters." The actual numbers of Abrams M1 and M1A1 tanks deployed to the Gulf War (according to official DOD sources) are as follows: A total of 1,848 M1A1 and M1A1 "Heavy Armor" (or HA) tanks were deployed between the U.S. Army and Marine Corp (who fielded 16 M1A1's and 60 M1A1(HA) tanks).
As the Gulf War shifted pace from Operation Desert Shield to Operation Desert Storm, and the preparatory bombardment lifted, U.S. Abrams tanks spearheaded the attack on Iraqi fortifications and engaged enemy tanks whenever and wherever possible.
Just as they had done in the Iran-Iraq War, the Iraqi Army used it's tanks as fixed anti-tank and artillery pieces, digging them into the ground to reduce target signature. However, this also prevented their quick movement and Allied air power smashed nearly 50% of Iraq's tank threat before Allied armor had moved across the border. After that the Abrams tanks quickly destroyed a number of Iraqi tanks that did manage to go mobile.
The Abrams now began to prove that American dollars had been well spent. Reports indicated that it's thermal sights were unhampered by the clouds of thick black smoke over the battlefield that were the result of burning Kuwaiti oil wells. In fact many Gunners relied on their "night" sights in full daylight. Such was not the case with the sights in the Iraqi tanks, which were being hit from units they could not even see. Concerns about the M1A1's range were eliminated by a massive resupply operation that will be studied for years as a model of tactical efficiency.
During the Gulf War only 18 Abrams tanks were taken out of service due to battle damage: nine were permanent losses, and another nine suffered repairable damage, mostly from mines. Not a single Abrams crewman was lost in the conflict. There were few reports of mechanical failure. U.S. armor commanders maintained an unprecedented 90% operational readiness for their Abrams Main Battle Tanks.
As it turned out the Abrams was money well spent.
Source:
Washington National Guard - Army Guard - The M1A1 Abrams Main Battle Tank