Sierra Nevada Corporation\u2019s Dream Chaser ETA (Engineering Test Article) conducted her maiden flight at the Dryden Flight Research Center on Saturday. However, the Commercial Crew prospect \u2013 after enjoying a perfect flight in the air \u2013 suffered a mechanical failure during landing, resulting in her flipping over on the runway.<\/p>\n
Dream Chaser:<\/p>\n
As announced in 2012, SNC\u2019s Dream Chaser was one of three vehicles selected by NASA for their follow-on to the Commercial Crew Development (CCDev-2) process.<\/p>\n
The additional award of $212.5m under the Commercial Crew Integrated Capability (CCiCap) initiative allowed Dream Chaser to progress through design reviews ahead of Saturday\u2019s major event.<\/p>\n
![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2012\/08\/Z310.jpg\" "\\"Z3\\"")
Dream Chaser is joined by SpaceX\u2019s Dragon spacecraft \u2013 launched via its Falcon 9 ride to orbit, and Boeing\u2019s CST-100, which, like Dream Chaser, will be lofted uphill by a human-rated United Launch Alliance (ULA) Atlas V. Birthed from the HL-20 lifting body vehicle, SNC partnered with the Langley Research Center (LaRC) via a five year partnership that focused on the evolution and substantiation of the Dream Chaser orbital crew vehicle.<\/p>\n
Added to the heritage of the Space Shuttle, SNC\u2019s believe their baby orbiter is capable of continuing the legacy, taking over the role of transporting NASA astronauts to the ISS.<\/p>\n
The free flight mirrored Shuttle\u2019s legacy, which began with major testing at Dryden via Enterprise and her series of Approach and Landing Tests (ALTs) in the 1970s.<\/p>\n
![\"Dream](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2013\/05\/F431.jpg\")
The ETA first tasted the air on the end of a cable attached to an Erickson Air-Crane helicopter, during two captive carry tests \u2013 the first at her home base in Colorado, followed by a second at Dryden.<\/p>\n
Spaceflight history books (adsbygoogle = window.adsbygoogle || []).push({});<\/p>\n Testing in California also included runway tow tests tests at various speeds, pulling the ETA via a pickup truck on the concrete runways.<\/p>\n Preparations for Saturday\u2019s major test began earlier in the week, with a series of three captive carry flights taking place on Tuesday. These tests included the ETA mimicking what she was required to conduct when flying on her own, evaluating the flight computer was ready for the series of events during the flight \u2013 all of which proved to be nominal.<\/p>\n Known as the approach-and-landing free-flight test, Saturday saw the ETA taken on one final captive carry test, ensuring everything on the vehicle was nominal, prior to the test proper.<\/p>\n The start of the test was slightly delayed due to airspace requirements, beginning at 9:45am local time.<\/p>\n With all systems classed as nominal, the command was given to release Dream Chaser via the electrically actuated attach points on the ETA.<\/p>\n Flying on her own for the first time, Dream Chaser enjoyed a period of free-flight, as she began her glide towards the lake bed, prior to making the final approach she will hope to conduct with a crew onboard in the coming years.<\/p>\n Dream Chaser\u2019s approach during a real mission will be targeting a landing speed of 191 knots, after re-entering the atmosphere protected by a Thermal Protection System (TPS) that is similar to that on the Space Shuttle.<\/p>\n Instead, an inbuilt skid strip is employed for completing the touchdown and rollout sequence. SNC have previously noted to NASASpaceFlight.com that this system is a simple, light, safe option.<\/p>\n During the test on Saturday, all systems performed admirably during the free flight, following release from the Erickson Air-Crane helicopter at 11:10am local time.<\/p>\n \u201cFollowing release, the Dream Chaser spacecraft automated flight control system gently steered the vehicle to its intended glide slope. The vehicle adhered to the design flight trajectory throughout the flight profile. Less than a minute later, Dream Chaser smoothly flared and touched down on Edwards Air Force Base\u2019s Runway 22L right on centerline,\u201d added SNC in a later release.<\/p>\n Notably, the main landing gear on the ETA is not the same as what set to be employed on future Dream Chasers.<\/p>\n \u201cWhile there was an anomaly with the left landing gear deployment, the high-quality flight and telemetry data throughout all phases of the approach-and-landing test will allow SNC teams to continue to refine their spacecraft design,\u201d added the company.<\/p>\n There is currently no confirmed information on the level of damage on the vehicle, or if she can be repaired.<\/p>\n \u201cSNC and NASA Dryden are currently reviewing the data. As with any space flight test program, there will be anomalies that we can learn from, allowing us to improve our vehicle and accelerate our rate of progress.\u201d<\/p>\n (Images via SNC, NASA and L2)<\/p>\n (Click here: http:\/\/www.nasaspaceflight.com\/l2\/ \u2013 to view how you can access the best space flight content on the entire internet and directly support NSF\u2019s running costs)<\/p>\n","protected":false},"excerpt":{"rendered":" Sierra Nevada Corporation\u2019s Dream Chaser ETA (Engineering Test Article) conducted her maiden flight at the Dryden Flight Research Center on Saturday. However, the Commercial Crew prospect \u2013 after enjoying a perfect flight in the air \u2013 suffered a mechanical failure during landing, resulting in her flipping over on the runway. Dream Chaser: As announced in […]<\/p>\n","protected":false},"author":1,"featured_media":30081,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[8996,4055,970,8894],"class_list":["post-39727","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-ccdev","tag-ccicap","tag-dream-chaser","tag-snc"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/39727"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=39727"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/39727\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media\/30081"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=39727"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=39727"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=39727"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"Z779\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2013\/10\/Z779.jpg\")
Notably, the third test involved the helicopter flying at high speed, followed by the ETA dropping her gear at the end of the sequence. This too was classed as a nominal test.<\/p>\nSee Also<\/h4>\n
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![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2012\/07\/Z341.jpg\")
The conclusion to her missions will see her touch down on two Main Landing Gear (MLG) just like the shuttle orbiters. However, there is one major difference when the nose is pitched forward, given the Dream Chaser will not be using a traditional Nose Landing Gear (NLG) wheel for its rollout.<\/p>\n![\"Z66\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2013\/10\/Z661.jpg\")
However, via what is being classed as a mechanical failure of the left landing gear (failure to deploy), the ETA lost control when \u201cweight on wheels\u201d, and flipped over on the runway. The focus appears to be on the landing gear door, which failed to open.<\/p>\n