Primo sub appalto per Orion: Boeing realizza lo scudo termico

Si chiamerà PICA il materiale ablativo sviluppato dalla Boeing, che garantirà un rientro sicuro alla capsula Orion.
Il materiale non sarà riutilizzabile, contrariamente a quanto auspicato dall’ESAS nel famoso documento in cui furono delineate le linee guida del progetto constellation.

Boeing to Develop Advanced Thermal Protection System for Orion Spacecraft

ST. LOUIS, Sept. 20, 2006 – The Boeing Company [NYSE: BA] has received a NASA contract to design and develop a thermal protection system (TPS) for the Orion crew exploration vehicle – America’s next generation spacecraft that will carry astronauts to the International Space Station and the moon.

The 16-month firm-fixed-price and cost-plus-fee contract has a maximum value of approximately $14 million including all priced options.

The hybrid contract, awarded by NASA Ames Research Center, is for advanced development and risk reduction of a phenolic impregnated carbon ablator (PICA) heat shield to protect Orion from the extreme heat generated during reentry into the Earth’s atmosphere.

Orion is the first human element in NASA’s Constellation program, the agency’s initiative to support America’s effort to return humans to the moon, Mars and beyond.

Boeing’s Advanced Network and Space Systems, a division of Boeing Advanced Systems, will participate with NASA in the Orion TPS development effort.

“Orion’s thermal protection system is a critical element of NASA’s future human spaceflight missions,” said George Muellner, president of Boeing Advanced Systems. “Our TPS team is focused on reducing the risks of this next generation heat shield technology to ensure the safety and success of these missions. We look forward to our continued involvement in space exploration and our successful partnership with NASA.”

Boeing has been NASA’s partner since the beginning of the Space Age and is once again teamed with the agency to safely return humans to the moon. Boeing Space Exploration is pursuing the second element (Upper Stage and avionics sections) of the Constellation program that will launch Orion into orbit – the Ares I crew launch vehicle.

The Orion heat shield is being developed as an expendable ablative system that dissipates a portion of the extreme heat generated during atmospheric reentry by gradually burning away. The system will withstand lunar-direct return conditions, in which Orion will reenter Earth’s atmosphere after a return from lunar missions. Lunar return conditions are characterized by much higher speeds and generate about five times greater heat than missions returning from the International Space Station.

During the contract, Boeing and principle subcontractor Fiber Materials Inc. (FMI) will perform heat shield design, structural and thermal protection system material testing, sub-system analysis, and fabrication and integration of a full scale, five-meter diameter Manufacturing Development Unit heat shield.

Boeing will provide heat shield integration and test coupon assemblies. FMI will fabricate all TPS components for the heat shield test and evaluation.

NASA’s Ames Research Center, partnering with other NASA Centers, will use its thermal, structural and environmental facilities to conduct extensive testing and evaluation of the PICA deliverables. The Ames-led inter-NASA team will assess the material performance and its risks and suitability for use as the Orion heat shield. NASA will work with Boeing to provide key validation and verification functions, as well as contribute toward the development and delivery of the overall preliminary heat shield design.

The team also will conduct material property testing at laboratories located at Boeing in Huntington Beach, Calif., and at FMI in Biddeford, Maine.

FMI fabricated PICA heat shield material for the NASA Stardust spacecraft that successfully returned to Earth earlier this year after a seven-year mission to collect particle samples from a flyby of Comet Wild 2.

NASA is developing Orion as a primary vehicle for future human space exploration. Orion will carry astronauts to the International Space Station by 2014, with a goal of landing astronauts on the moon no later than 2020.

Ed ecco il comunicato ufficiale NASA

Sep. 15, 2006

Michael Braukus/Beth Dickey
Headquarters, Washington
202-358-1979/2087

Kelly Humphries
Johnson Space Center, Houston
281-483-5111

Michael Mewhinney
Ames Research Center, Moffett Field, Calif.
650-604-3937
CONTRACT RELEASE: C06-046

NASA AWARDS THERMAL PROTECTION CONTRACT FOR ORION SPACECRAFT

NASA has selected The Boeing Company, Huntington Beach, Calif., to
support the design and development of a lunar direct return-capable
heat shield for the Orion crew exploration vehicle. The hybrid firm
fixed-price and cost-plus-fixed-fee contract has a 16-month period of
performance, with a maximum value of approximately $14 million,
including all priced options.

The heat shield will protect the spacecraft and crew during
atmospheric reentry following missions to the moon or the
International Space Station. The heat shield attached at the base of
the spacecraft will reject the majority of the heat generated during
re-entry into Earth’s atmosphere. Returning from missions to the
station, Orion will re-enter at speeds similar to those experienced
by the space shuttle - 16,700 miles an hour. Returning from the moon,
Orion will reenter the atmosphere at speeds of about 25,000 miles an
hour and experience heating about five times as extreme as missions
returning from the station.

NASA’s Constellation Program is developing Orion as NASA’s primary
vehicle for future human space exploration. Orion will carry
astronauts to the station by 2014, with a goal of landing astronauts
on the moon no later than 2020.

The present Phase II contract with Boeing is a continuation of an
earlier Phase I NASA effort that evaluated phenolic impregnated
carbon ablator (PICA), as well as four other candidate materials
using extensive testing and analysis. Boeing has been selected to
provide PICA, a proprietary material manufactured by its
subcontractor, Fiber Materials Inc. of Biddeford, Maine, for
continued testing and evaluation.

Boeing’s deliverables for this contract include:

  • Samples of thermal protection system materials for thermal,
    structural and environmental testing and analysis
  • A preliminary heat shield design and detailed heat shield
    implementation plan using PICA
  • A full-scale 16.5-foot (5-meter) heat shield manufacturing
    demonstration unit
  • Comprehensive trade studies targeted toward increasing the
    technology readiness of a PICA-based heat shield.
  • A material properties database and thermal response model for PICA

NASA’s Ames Research Center, Moffett Field, Calif., is the agency’s
lead center for thermal protection systems and will use its thermal,
structural and environmental facilities to conduct extensive testing
and evaluation of the PICA deliverables. Ames will assess the
material performance and its risks and suitability for use as the
Orion heat shield. NASA will work with Boeing to provide key
validation and verification functions, as well as contributing toward
the development and delivery of the overall preliminary heat shield
design.

For more information about the heat shield, visit the Orion section of
the NASA portal:

http://www.nasa.gov/orion

-end-