《華爾街日?qǐng)?bào)》上周四援引美國(guó)官員消息稱，在對(duì)去年SpaceX獵鷹9號(hào)火箭發(fā)射事故的調(diào)查中，美國(guó)政府責(zé)任署（GAO）發(fā)現(xiàn)“關(guān)鍵推進(jìn)部件始終存在裂縫”。裂縫主要影響將燃料泵入火箭發(fā)動(dòng)機(jī)的渦輪葉片。該報(bào)告稱，以上是初步發(fā)現(xiàn)，詳細(xì)的GAO調(diào)查報(bào)告未來(lái)幾周內(nèi)發(fā)布。

《華爾街日?qǐng)?bào)》還說(shuō)，美國(guó)國(guó)家航空航天局（NASA）警告SpaceX，所謂渦輪泵產(chǎn)品中出現(xiàn)裂紋是“不可接受的”風(fēng)險(xiǎn)。該報(bào)援引NASA副局長(zhǎng)羅伯特·萊特福特講話稱，NASA得知存在裂紋問(wèn)題已經(jīng)一段時(shí)間，最近一次發(fā)現(xiàn)是去年9月的測(cè)試中。

GAO的調(diào)查意見(jiàn)可能使SpaceX面臨重大挫折。SpaceX的計(jì)劃是，除了現(xiàn)有的人造衛(wèi)星業(yè)務(wù)，未來(lái)還將發(fā)射載人航天飛船。去年9月獵鷹9號(hào)火箭在卡納維拉爾角的發(fā)射臺(tái)發(fā)生爆炸后，該計(jì)劃已中斷四個(gè)月。那次事故給該司造成超過(guò)2億美元的收入損失。今年1月，SpaceX重新發(fā)射火箭，未出現(xiàn)任何事故。（財(cái)富中文網(wǎng)）

作者：Geoffrey Smith

譯者：Pessy

審校：夏林

The WSJ quoted officials Thursday as saying that the Government Accountability Office's investigation into the Falcon 9 rockets has uncovered "persistent cracking of vital propulsion components." The problem mainly affects turbine blades that pump fuel into the rocket's engines. The findings are preliminary, and the GAO report is due to be released in the next few weeks, according to the WSJ.

It added that NASA has already warned the company that cracking in the so-called turbo pumps is an "unacceptable" risk. It's one that NASA has known about for some time, with cracks found during tests as recently as last September, the WSJ quoted acting NASA administrator Robert Lightfoot as saying.

The GAO's conditions could prove a big setback to SpaceX, which aims to offer manned spaceflight launches in the future alongside its current satellite launching business, which is already backed up due to a four-month hiatus after a Falcon 9 exploded on the launch pad at Cape Canaveral in September. The incident cost it over $200 million in lost revenue. SpaceX resumed launches in January with an incident-free flight.