Proof very apparent read below.
The Army had placed its Rs.17.60 billion order for the tanks in March 2000 Link
Results of trial- Tell me why would someone buy it then ?????????
July 2005 - During the summer trials in 2005, it was reported that the Arjun suffered major problems with its main gun sight, suspension system, and fire control system. Moreover, engine failures occurred commonly in temperatures averaging 55-60 degrees Celsius
Result fail
Link
Summer 2006- the 2006 army trial results showed that "the decade-old problems of overheating persist" and that "tank’s main subsystems, the fire control system (FCS) and integrated gunner’s main sight, which includes a thermal imager and laser range-finder, are rendered erratic and useless by the Arjun’s abnormally high peak internal temperature, which moves well beyond 55 degrees Celsius. This is in testimony to the Parliamentary committee.
Result - Failure -
Link
September 2007 winter trials - the Indian army deemed Arjun's performance unsatisfactory, including at least four engine failures. Result Fail -
Link
DRDO claimed sabotage
Link
2008 summer trials- Auxiliary User Cum reliability trials (AUCRT) of the Arjun MBT was conducted from September 2007 to summer of 2008. In a report to the Parliamentary standing committee the Indian army deemed Arjun's performance unsatisfactory, including four engine failures within only 1000 kilometers.
Link
The Army wrote in the report that during the "accelerated user-cum-reliability trials" in 2008, the Arjun "was found to have failure of power packs, low accuracy and consistency, failure of hydropneumatic suspension units, shearing of top rollers and chipping of gun barrels".
Link
Sabotage was suspected, but the Army rejected that any sabotage happened during the trials.DRDO has installed a black box-like instrument in the indigenous main battle tank (MBT) Arjun, under development for nearly 36 years, following attempts to "sabotage" its engine. The instrument was installed after the Indian Army termed the September 2007 winter trials of the Arjun tank a "failure".Attempts to sabotage the trials of the Arjun tank have failed after the black box was installed, said authorities
Result - ??
Link1 Link 2
There is no whitewash here.