2007 in Spaceflight - Launch Failures

Launch Failures

Three orbital launch attempts in 2007, involving a Zenit, a Falcon 1, and a Proton failed, and two others, an Atlas V and a GSLV, resulted in partial failures. On 30 January, a Sea Launch Zenit-3SL exploded on the Ocean Odyssey launch platform, seconds after ignition. The failure destroyed the NSS-8 satellite, and caused considerable damage to the Odyssey platform. It was later determined that the failure had been caused by debris in the turbopump. As a result of downtime to conduct repairs, and bad sea conditions at the end of the year, Sea Launch did not conduct another launch until 2008.

On 21 March, SpaceX launched the second Falcon 1. Due to the failure of the maiden flight, the launch was conducted as a demonstration flight without a functional payload. The launch failed to reach orbit due to a chain of events, starting with an error in setting the fuel mix ratio, which resulted in first stage underperformance, and the rocket being too low at the time of first stage separation. Additional atmospheric drag at this altitude caused recontact between the stages, setting up a fuel slosh in the second stage. This resulted in the premature cutoff of the second stage, and the rocket failed to reach orbit. This was the last launch of the Falcon 1 with the ablatively cooled Merlin-1A engine, which was replaced with the regeneratively cooled Merlin-1C for subsequent flights, starting in August 2008. As several test objectives were completed, SpaceX claimed that the launch was a success overall, and declared the Falcon 1 operational.

The Atlas family ended a run of eighty consecutive successful launches over fourteen years, after a partial failure of an Atlas V launched on 15 June. A faulty valve caused a fuel leak in the Centaur upper stage, resulting in a premature cutoff at the end of its second burn. This resulted in the USA-194 satellites being delivered into a lower orbit than planned. The spacecraft were able to correct the orbit using their manoeuvring engines.

The fifth GSLV was launched on 2 September, with the INSAT-4CR satellite. This was the first GSLV launch since the failure in July 2006. The rocket underperformed, and placed the satellite into an orbit with a lower apogee and greater inclination than planned. This required the spacecraft to use fuel reserved for stationkeeping to raise itself to the correct orbit, at the expense of its operational lifetime.

On 5 September, a Proton-M with a Briz-M upper stage failed to place the JCSAT-11 into orbit, after the second stage of the carrier rocket failed to separate from the first. It was later established that damaged cabling had been the cause of the malfunction.