Wednesday, June 24, 2020

Rockets: The Only Viable Way To Reach Outer Space?


From Robert H. Goddard’s first working prototypes to the Apollo’s Saturn V to the current SpaceX Crew Dragon, are rockets the only viable conveyance to reach outer space?

By: Ringo Bones

A few months before the Wright Brother’s first successful flight back in December 17, 1903 at Kitty Hawk, space travel visionary Konstantin Tsiolkovsky published his work – including the pertinent mathematics - detailing how rockets would be necessary in space exploration. Fast forward to the successful SpaceX Crew Dragon docking with the International Space Station and the Falcon 9 rocket’s lower section successfully landing for reuse to slash the cost of reaching low earth orbit, are “Goddard style rockets” currently the only viable vehicles for space exploration in the foreseeable future?

Anyone old enough to remember the early successes of the McDonnell Douglas Delta Clipper Experimental DC-X single stage to orbit launch system would probably think that this kind of space vehicle – as in the classic “rocketship” – is the only viable way to explore space for the foreseeable future – that is until we can create a working Alcubierre style warp drive used by Zefram Cochran in Gene Roddenberry’s Star Trek. I mean, around the early 1990s when a suitable replacement for the NASA Space Shuttle fleet was already sought due to its cost and safety issues, it seems that the upstart DC-X single stage to orbit upstart was seen as the most promising replacement for the NASA Space Shuttle fleet – that any potential space vehicle that’s a cross between an airplane and a rocketship – i.e. a space vehicle that can reach low earth orbit but can take-off and land on a conventional 10,000-foot runaway like a passenger jet – was inevitably seen as a “technological dead end”. I mean probably anyone old enough to remember the successes of the McDonnell Douglas DCX single stage to orbit launch vehicle back in the first half of the 1990s would probably state that the design is probably what “influenced” Elon Musk’s SpaceX Falcon 9 and Crew Dragon combo.

Then came 9/11 and in the intervening years on what rogue states are capable of or are willing to do. Imagine a crew of astronauts landing in hostile territory and eventually taken hostage by a terror group or a rogue state just because a ballistic computer malfunction had sent them to land in “unfriendly territory”. Such a nightmare scenario gained an air of plausibility when back in April 19, 2008 a Soyuz TMA capsule carrying South Korea’s first astronaut Yi So-yeon, Commander Peggy Whitson and Russian flight engineer Yuri Malenachenko got almost 300 miles off course due to a malfunctioning ballistic computer.

Maybe NASA should work with Richard Branson in order to make a version of the Virgin Galactic SpaceShipTwo that could reach the International Space Station given that the SpaceShipOne can be controlled aerodynamically to land in a more or less conventional airport runway. I mean a design like the SpaceShipTwo is less likely to get off course and crash in a Taliban controlled territory in Afghanistan compared to the Soyuz TMA capsule returning from the International Space Station.

Tuesday, June 23, 2020

Crew Dragon: Most Eagerly Anticipated Space Mission?


Given that it finally regained NASA’s ability to launch space missions from American soil, was the Crew Dragon launch the most eagerly anticipated space mission for more than a decade?

By: Ringo Bones

Since the NASA’s fleet of Space Shuttles has been retired back in 2011, it seems that the United States has lost its ability to launch crewed missions into the International Space Station and return them safely using launch systems on American soil. NASA has, for almost a decade, became dependent on the Russian Soyuz launch system as the only way to send American and other astronauts to the ISS and back. But could a private space start-up by Elon Musk provide a more cost effective and safer alternative?

Since the private space transportation company was established back in 2002, Elon Musk’s SpaceX primary mission was to provide launch systems that can make space missions make fiscal sense to be economically viable enough to make space industry – and even space tourism – a reality. And since the NASA Space Shuttle fleet was retired in 2011, it only spurred on SpaceX’s plans to provide a suitable new and improved launch system.

With the successful SpaceX Falcon 9 rocket carrying the company’s Crew Dragon spacecraft from NASA’s Kennedy Space Center Launch Complex 39A back in May 30, 2020 with NASA astronauts Robert Behnken and Douglas Hurley onboard. The crew successfully docked to the International Space Station back in June 1, 2020 and with a reusable and returnable lower stage, it seems that Elon Musk’s system could prove to be a cheaper and safer alternative to NASA’s now retired Space Shuttle program – and even the existing Russian Soyuz launch system.