Constellation

Constellation battle numerous Top Risks - Orion loses unmanned capability

The Orion Crew Exploration Vehicle (CEV) is undergoing further reductions in its capability - including the elimination of the vehicle’s unmanned ability - as Constellation managers attempt to resolve numerous issues ahead of the Orion Project PDR (Preliminary Design Review). Issues noted in the recent “Top Risks” review list 10 serious issues with the Ares and Orion vehicles, ranging from Ares I-X, through to Orion itself.

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Discovery handed special heatshield coating DTO on behalf of Orion

June 22nd, 2009

Shuttle Discovery has been tasked with a special DTO (Detailed Test Objective) - on behalf of the Orion Project Office - to be carried out during STS-128’s re-entry. A “Catalytic Coating” has been applied to two of Discovery’s Thermal Protection System (TPS) tiles, providing Orion - and shuttle - engineers with refined aeroheating data.

Ares I-X slips to September 18 as processing edges towards stacking

June 7th, 2009

The Ares I-X test vehicle is scheduled to begin stacking in the Vehicle Assembly Building (VAB) at the end of the month, despite continued slips to the launch date - the latest of which places Ares I-X as lifting off from Pad 39B NET (No Earlier Than) September 18.

DIRECT issue rebuttal over NASA analysis of Jupiter launch vehicle

May 18th, 2009

The team behind the alternative exploration architecture known as DIRECT have released a rebuttal document, countering claims made by NASA’s Constellation Program, ahead of the Blue Ribbon review for human space flight. The document specifically targets a series of claims made by a NASA team in May and October of 2007, which found the Jupiter [...]

Refining Constellation’s plans to make 2015 - Hanley proposes major changes

April 24th, 2009

Citing schedule concerns and technical challenges, Constellation manager Jeff Hanley has outlined a series of proposed solutions to avoid further slips in the Ares/Orion schedule. Mr Hanley proposes deleting the Ares I-Y test flight, making Ares I’s first stage disposable, switching from Orion 4 to Orion 3 as the Full Operational Capability (FOC) date, along [...]

Study finds EELV capable of Orion role - Griffin claims alternatives are fiction

April 20th, 2009

A study by the Aerospace Corporation, conducted at the request of NASA to disprove the viability of an option to switch Orion to an alternative Evolved Expendable Launch Vehicle (EELV), has found both the Atlas V Heavy and Delta IV Heavy are capable of launching Orion on both ISS and Lunar missions. Meanwhile, former NASA [...]

Ares/Orion slipping up to 18 months - Shuttle extension gains upper hand

March 27th, 2009

NASA’s Constellation Program (CxP) will conduct a “Content and Schedule” summit meeting in the next few months, after it was evaluated their current schedules are “broken”. The meeting will aim to protect against a slip that is estimated to be as serious as 18 months, or outright cancellation for Ares I. Meanwhile, the push for [...]

Ares I-X delayed - Atlantis rollover to VAB completed ahead of dual pad option

March 22nd, 2009

The Constellation Program (CxP) test flight, Ares I-X, has slipped three weeks to a NET (No Earlier Than) July 31 - with the potential for more delays - on the latest planning documents, as the Space Shuttle Program (SSP) prepare to announce the dual use of Pads 39A and 39B for their STS-125 and STS-400 [...]

Orion opts for Hybrid Lite comms system due to mass/power issues

March 6th, 2009

Lockheed Martin have recommended a switch of a 8Mbs Phased array on its Communications and Tracking (C&T) system to a combination phased array S-Band at low data rates with a High Gain Antenna - called Hybrid “Lite” - due to Orion’s mass and power issues.

JDTV on track for February drop - MLAS ready for test

February 17th, 2009

The Jumbo Drop Test Vehicle is in final preparations for a February 26 drop, as part of the Ares I First Stage parachute tests. Meanwhile, the little-known Max Launch Abort System (MLAS) will conduct its first test in March.

Extra NASA funds: An initial step towards gap reduction options/extension

February 12th, 2009

US lawmakers have agreed on a stimulus package that includes just over $1 billion in additional funds for NASA, to be utilized during 2009 and 2010. While the $400m allocated towards “Exploration” is not specifically earmarked for extension of the shuttle program, it could allow NASA to take the first steps in reducing “The Gap” [...]

Return to SSME - Ares V undergoes evaluation into potential switch

December 26th, 2008

Constellation engineers are carrying out an evaluation process into a potential option of going back to the SSME (Space Shuttle Main Engine) on the Ares V first stage, which in turn would allow a return to a five segment Solid Rocket Boosters on the giant vehicle.

Ares I Thrust Oscillation meetings conclude with encouraging data, changes

December 9th, 2008

A series of Ares I Thrust Oscillation (TO) meetings have concluded with the decision to recommend baselining Ares I’s Tuned Mass Absorber (TMA) on the aft of the vehicle as a passive - as opposed to active - system, as the latest analysis - which has included human tests - reduce TO as a potential [...]

STS-126 to debut SRB modification to gather Ares I Thrust Oscillation data

November 9th, 2008

STS-126 will see the flight debut of two new sets of instrumentation, aimed at gathering more detailed data on RSRM (Reusable Solid Rocket Motor) behaviour during the first stage of launch. The resulting data will benefit the efforts to understand and mitigate Thrust Oscillation on Ares I.

Ares I Lift Off Drift Curve focuses on the TVC - not just high winds

November 2nd, 2008

Documentation related to Ares I’s Lift Off Drift Curve issue has highlighted concerns with the vehicle’s Thrust Vector Control (TVC), via its reaction to controlling the vehicle as it climbs away from the pad.

Constellation debate deleting Ares tests to beat 2015

October 28th, 2008

The Constellation Acceleration Study Team are evaluating 160 “brainstorming ideas” in an attempt to reduce the current gap between shuttle and Ares/Orion by up to 18 months. However, such a process would come at a cost, with widescale deletions to Ares I testing and a major deferral to the development of the Lunar Orion.

Orion PDR delay could stretch into 2010

September 30th, 2008

The requirement to carry out an additional Design Analysis Cycle (DAC) has already delayed Orion’s Preliminary Design Review (PDR) into the middle of next year.

Orion’s plea to Ares I: Stop adversely hindering our design process

September 15th, 2008

Lockheed Martin’s design efforts on the Orion vehicle are being hindered by Ares I driven requirements, documented notes claim, with concerns ranging from the constant design changes, to Thrust Oscillation (TO) mitigation requirements.
With Crew Seat Isolation efforts deferred until next year - in order not to delay the recent Ares I PDR (Preliminary Design Review) [...]

Thrust Oscillation options outlined for Ares I PDR

August 19th, 2008

Ares I engineers have created a “Plan A” option - which combines three mitigation techniques - to attempt to solve Thrust Oscillation issues during first stage flight.
Plan A involves an active Tuned Mass Absorber (TMA) to the aft skirt, dampers on the interstage, and the crew seat isolators - though during a teleconference [...]

Constellation confirm IOC slip to Orion schedule

August 11th, 2008

Two months after Constellation informed the workforce of an internal slip to opening element of the Orion flight schedule, manager Jeff Hanley has finally confirmed the realignment to the media.
As previously stated by Hanley, the projected launch of Orion 2 - which will be the first crewed Orion mission - isn’t expected to [...]