Дата: 09 февраля 1998 (1998-02-09)
От: Alexander Bondugin
Тема: PEGASUS/SNOE LAUNCH FROM VANDENBERG POSTPONED
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NASA News
National Aeronautics and
Space Administration
John F. Kennedy Space Center
Kennedy Space Center, Florida 32899
________________________________________________________________________
____________________________________
For Release:
Bruce Buckingham
Feb. 5, 1998
Kennedy Space Center, FL
George H. Diller
Vandenberg Air Force Base, CA
KSC Release No. 30 - 98
PEGASUS/SNOE LAUNCH FROM VANDENBERG POSTPONED
Senior launch managers from NASA, Orbital Sciences Corporation and the
U.S Air Force met today and decided to reschedule the launch of the
Student Nitric Oxide Explorer (SNOE) spacecraft. Launch had been
tentatively planned for the evening of Feb. 5 aboard a Pegasus rocket
from Vandenberg Air Force Base, CA. Also aboard the Pegasus is the
Batsat communications satellite for Orbital Sciences.
At this time, observed and forecast weather conditions make a launch
attempt unlikely in the next few days. In reviewing the range launch
schedule, managers determined that the next flight opportunity for this
mission is anticipated to be during the week of Feb. 15. A more
definite launch date will be determined as new schedules are developed
and coordinated during the next week.
SNOE is an Earth-orbiting satellite designed and built by a team of
University of Colorado at Boulder students, faculty and engineers who
were selected to develop the mission by the Universities Space Research
Association with funding from NASA. SNOE carries an ultraviolet
spectrometer and two photometers to measure the effects of the sun's
x-ray radiation and magnetic field on nitric oxide production. This is
believed to effect the variability in the Earth's upper atmosphere.
-- end -
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Дата: 09 февраля 1998 (1998-02-09)
От: Alexander Bondugin
Тема: This Month On Galileo - February 9 - March 8, 1998
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THIS MONTH ON GALILEO
February 9 - March 8, 1998
Galileo is scheduled for a close flyby of Jupiter's moon Europa on February
10, a few days before entering a 2-1/2 week period of limited communications
with Earth caused by solar conjunction. During conjunction, the sun passes
between Earth and the spacecraft and only radio science data is collected
during this flyby. Until this period of limited communications begins, the
spacecraft will process and transmit to Earth pictures and other science
information gathered during the previous Europa flyby in December 1997.
Transmission of that data, stored on an onboard tape recorder, will resume
after the conjunction period ends.
During the week of Feb. 9, the spacecraft flies through the Jupiter system
for the second time of the Galileo Europa Mission. Prior to reaching any of
the bodies in the Jupiter system, the spacecraft performs regular
maintenance on the onboard tape recorder and on the propulsion system. These
maintenance activities are performed periodically to keep the spacecraft in
good operating shape. The closest point to the moon Ganymede is reached
first, late Monday night, Feb. 9, at a distance of about 630,000 kilometers
(392,000 miles). The close flyby of Europa occurs at 9:57 a.m. (PST) at a
planned altitude of 3552 kilometers (2208 miles). The radio science
investigation is the only source of new science data during this flyby. For
20 hours surrounding the point of closest approach, the team will monitor
Galileo's radio signal for changes in radio frequency due to Europa's
gravitational pull on the spacecraft. By using the Doppler effect and
measuring these changes, the radio science team will be able to refine the
map of the gravity field produced by Europa. This map has been created with
data from previous orbits and will continue to be updated with data from
subsequent orbits. Five hours after the point of closest approach to Europa,
the spacecraft flies through the point of closest approach to Jupiter. This
will occur at a distance of approximately 8.9 Jupiter Radii (640,000
kilometers or 395,000 miles) from the gas giant. The closest approach
distances to the moons Io and Callisto occur on Wednesday at distances of
440,000 kilometers (273,000 miles) and 2.3 million kilometers (1.4 million
miles), respectively. Following the spacecraft flythrough of the Jupiter
system, the spacecraft will execute, if needed, a flight path correction.
This maneuver, planned for Friday, Feb. 13, will correct any errors in the
spacecraft's orbital path that have been accumulated since the previous
flight path correction, prior to the close flyby of Europa.
Toward the end of the day on Friday, the spacecraft will enter a period of
limited to no communication with Earth. This period will last approximately
two and a half weeks and is a result of the sun passing between Earth and
Jupiter (where the spacecraft is orbiting). This period is known as solar
conjunction and occurs when the sun, as it passes between Earth and Jupiter,
is close to the path traveled by radio signals as they go from the
spacecraft to Earth and vice-versa. As radio signals pass close to the sun,
they are affected by solar activity and become noisy or garbled and less
data can be safely transmitted to Earth. Because of the reduction in the
amount of information that can be successfully transmitted to Earth, the
project team has decided not to gather new science data during the flyby of
Europa that is planned for this week. In its place, the available
transmission time will be dedicated to the continued return of science data
gathered during the December 1997 flyby.
The processing and transmission schedule only contains one observation
during the entire period covered by this edition of This Week on Galileo.
This is caused primarily by a reduction in transmission volume surrounding
these days of limited communcations. The single observation was performed by
the Near Infrared Mapping Spectrometer and covers an area of Europa
characterized by the Pwyll crater. The data contained in this observation
will allow scientists to learn more about the materials that make up this
region of Europa.
The next update to This Week on Galileo will occur in 4 weeks. Come back on
March 9 for the latest news on Galileo!
Note: All times of day listed correspond to the Pacific Time zone and
spacecraft event time. Radio signals indicating that an event has occurred
on the spacecraft reach the Earth 35 to 50 minutes later, depending on the
time of year.
For more information on the Galileo spacecraft and its mission to Jupiter,
please visit the Galileo home page:
http://www.jpl.nasa.gov/galileo/
Hа сегодня все, пока!
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Дата: 09 февраля 1998 (1998-02-09)
От: Alexander Bondugin
Тема: STARDUST Update - February 6, 1998
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STARDUST Status Report
February 6, 1998
Ken Atkins
STARDUST Project Manager
Today (February 6) marks 365 days to Launch! The system assembly and test
activities (aka "ATLO") continue to move very well at Lockheed-Martin's
Astronautics Co. in Denver. The Key this week was the installation of the
Power Control Assembly (PCA) ATLO Test Unit (ATU) on the spacecraft for
electrical power and continuity (EP&C) testing. This testing will begin the
process of insuring that the "blood and nervous systems" of the spacecraft,
power and data , are in place and working well. The spacecraft was
powered-on at 9 am February 5, 1998. EP&C tests were completed and command &
telemetry interface testing has been initiated.
Website Feed of ATLO: We are now projecting March 1 for getting the hook-up
to this WebSite. We have some software mods to complete. Thanks for your
patience.
Major Event: The Drop Test of the Structural Thermal Model Sample Return
Capsule (SRC) was successfully completed February 5, 1998. This test
occurred at the Utah Test and Training Range (UTTR) of the USAF Air Combat
Command near Salt Lake City. The drop, from a balloon gondola, began at
about 13,000 feet on the drogue parachute. The barometric switches triggered
the main parachute on-cue at 10,000 ft., the radar reflector was easily
picked up and tracked. Telescopes were also used to observe and film the SRC
descent. The landing was extremely "soft." Congratulations to the "Heroes of
the 'Salt Flats'."
Excellent progress was also made this week on several other activities:
* Operations: The Launch and Solar Array deploy command block was
delivered to JPL for inclusion in sequence generation (SEQGEN)
software. Table top review of the Flight Rules was completed. The
Command Dictionary was updated. The flyby targeting process update was
completed incorporating the updated Comet Wild-2 dust model.
* Navigation Camera: All of the power supplies for the flight unit were
delivered this week!! This has been a key critical path item on the
delivery path.
'Til next week.........
For more information on the STARDUST mission - the first ever comet sample
return mission - please visit the STARDUST home page:
http://stardust.jpl.nasa.gov/
Hа сегодня все, пока!
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Дата: 09 февраля 1998 (1998-02-09)
От: Alexander Bondugin
Тема: * SpaceNews 09-Feb-98 *
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SB NEWS @ AMSAT $SPC0209
* SpaceNews 09-Feb-98 *
BID: $SPC0209
=========
SpaceNews
=========
MONDAY FEBRUARY 9, 1998
SpaceNews originates at KD2BD in Wall Township, New Jersey, USA. It
is published every week and is made available for non-commercial use.
* BELIZE OPERATION IN MARCH *
Frank Edwards, VE3ER, reports that he will be active on RS-12 from Cayei
Caulker, Belize, from 03-Mar-98 to 16-Mar-98. His callsign will be V31FE,
and he will be operating CW around 29.415 MHz and SSB around 29.440 MHz.
* MIR AMATEUR RADIO STATUS *
Mir Amateur Radio Status Feb 5, 1998
The cutoff date for submitting Sputnik-40 reception reports is 28-Feb-98.
Please send reports to:
Sergej Samburov
PO Box 73
Korolev-10 City
Moscow Area, 141070, Russia
The FR5KJ Radio Club is also providing a Sputnik-40 diploma in return
for reception reports. Their address is:
FR5KJ Radio Club
College Jules Reydellet
103 rue de la Republique
97 489 Saint Denis Cedex
Reunion Island.
The current Mir crew consists of Commander Anatoly Solovyev, Flight Engineer
Pavel Vinogradov, Talgat Musabayev RO3FT, Nikolai Budarin, RV3DB and R4MIR,
American Andy Thomas, KD5CHF, and Frenchman Leopold Eyharts, who is aboard
Mir for a 3 week stay. The next shuttle docking mission is currently
scheduled for 28-May-98.
The Mir packet radio PMS and the SAFEX II repeater are both currently turned
off for the time being. The Mir crew has just been too busy with other
higher priority projects to spend much time adjusting parameters on the TNC.
The Mir crew has information required to reconfigure the new TNC, and we are
just waiting for the crew to find an open slot in their schedule to load in
the correct parameters.
While the Amateur Radio Station on Mir has been turned off, the crew may
still turn it back on to make random contacts with groundstations. MIREX
was informed by MAREX that the Mir crew is expected to be very busy until
after crew 24 returns to earth.
MIREX would like the stations monitoring the PMS to please be patient while
proper adjustments are made to the packet radio terminal node controller.
MIREX has created an Internet Web page containing information regarding Mir
and the various Amateur Radio experiments proposed for the space station.
The pages are still "under construction", but some good information can
be gathered from what has been put together so far. URLs include the
following:
http://www.ik1sld.org/mirex.htm OR
http://www.ik1sld.org/mirex
http://www.geocities.com/~ik1sld/mirex.htm OR
http://www.geocities.com/~ik1sld/mirex
Some people have had problems using the some of the URL aliases, if so,
try the long version of the home page address:
http://www.geocities.com/CapeCanaveral/Lab/3431/mirex.htm
[Info via Miles, WF1F, MIREX Director of Educational Resources]
* VK0MAP ACTIVE FROM ANTARCTICA *
Andre Phillips, VK0MAP/VK5AAP/ZL3AW has been active on KITSAT-OSCAR-25 from
Antarctica. Andre is using a Kenwood TS-790A along with a PacComm Tiny 2
terminal node controller and a pair of Lindenblad antennas constructed from
number 8 fencing wire. He reports at least 5 minutes of solid connect time
per pass on KO-25, and mentions that UO-22, KO-25 and POSAT all rise to an
elevation of 34 degress, and KO-23 gets as high as 12 degrees at his
location.
* FEEDBACK/INPUT WELCOMED *
Comments and input for SpaceNews should be directed to the editor (John,
KD2BD) via any of the paths listed below:
WWW : http://www.njin.net/~magliaco/
PACKET : KD2BD @ KS4HR.NJ.USA.NA
INTERNET : kd2bd@amsat.org, magliaco@email.njin.net
SATELLITE : AMSAT-OSCAR-16, LUSAT-OSCAR-19, KITSAT-OSCAR-25
<<=- SpaceNews: The first amateur newsletter read in space! -=>>
<<=- Serving the planet for 10 years -=>>
/EX
-=-=-=-=-=-=-=-=-=-=-=-=- John A. Magliacane, KD2BD -=-=-=-=-=-=-=-=-=-=-=-=-
Internet : kd2bd@amsat.org | Voice : +1.732.224.2948
Satellite : OSCAR-16, OSCAR-19 | Morse : -.- -.. ..--- -... -..
Packet : KD2BD @ KS4HR.NJ.USA.NA | WWW : http://www.njin.net/~magliaco/
Video : 426.250 MHz/439.250 MHz | FAX : +1.732.224.2060
-=-=-=-=-=-=-=-=- Hiroshima '45, Chernobyl '86, Windows '95 -=-=-=-=-=-=-=-=-
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