Challenger: What Went Wrong?DEBBIE ELLIOTT
About 72 seconds into Challenger's flight, there was a massive, almost explosive, burning of the hydrogen that was streaming from the failed tank bottom, combined with liquid oxygen leaking from a part of the fuel tank known as the intertank. Under severe aerodynamic loads, thespace shuttle C...
As private companies and NASA take the next big steps in space, no one can forget the inescapable reality that spaceflight is risky. When Apollo went to the moon, it had the rule of “three nines:” every system had to be 99.9 percent safe to minimize risk, meaning the risk was there...
由短文中的空格处下句2.___ On 4th October, 1957, the Sputnik I satellite( 人造卫星) was launched(发射) by the USSR and successfully went around Earth.(1957年10月4日,苏联发射的Sputnik I号卫星成功绕地球运行)可知,选项d:(经过多次试验,他们成功地制造出了可以脱离地球引力的火箭)内容符合原文的逻...
The world went into shock, most people having assumedthat this space flight would be no more dangerous than travelling that引导的宾语从句in an aeroplane. How wrong they had been! Instantaneously, excitement How引 的感叹and optimism turned into terror and failure. It was the most disastrous space...
Correct me if I am wrong, but Challenger was MOPAR’s take on the pony car craze. If you wanted a Dodge brand muscle car back in the day, you either went with the Charger, Coronet (and perhaps some other models). So while the modern Challenger may fit the description of a muscle ...
That meant Leclerc went into the lead, and from there he was faultless as he disappeared up the track to take his third win of the year. Sainz in third managed to undercut Verstappen in the pit stops, and then was also able to pull away for Ferrari’s second 1-2 of...
Likewise I am very pleased with my Oxford Bike Works bicycle. Re tents, your Nigor Great Auk 2 is an eye watering £800 and heavy at 3.5kg. I went for a Luxe Outdoor Peakarch TL-6350, less than half the price, and 1kg+ lighter. The MSR Hubba Tour2 looks like you got a bargai...
For example,America's NASA space agency launched Voyager 1 on 5th September, 1977 to study deep space, and it still works now.3.All the astronauts on USSR's Soyuz 1l and America's Challenger died during their missions. A. Complete the paragraphs with the following sentences. There is one...
Although scientists try to mak e sur e nothing goes wrong, accidents can still ⑥disappointed adj.失望的;沮happen. All th e astronauts on th e USSR's Soyuz 11 and America's Challenger丧的disappoint ut.(使)失望died during their missions. Thes e disasters mad e everyon e sad and ...