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Cheap Spacecraft Thermal Control Handbook: Fundamental Technologies (Hardcover)
Oct 27th
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Spacecraft Thermal Control Handbook: Fundamental Technologies
Product By Aerospace Press
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Spacecraft Thermal Control Handbook: Fundamental Technologies Review
2005-12-17
By John R. Keller (Houston, TX United States)
This book is essentially an update of the author’s previous work, The Satellite Thermal Control Handbook, and is the collective writings of dozens of engineers who specialize in the design and analysis of spacecraft thermal control systems. While his first book focused on thermal control systems for unmanned Earth orbiting satellites, this new book expands on this information and includes interplanetary probes, the space shuttle and the most recent advances in thermal control system hardware.
Over my many years in the aerospace industry, I have designed numerous thermal control systems for various types of spacecraft, and I have used this book countless times, especially for its extremely detailed and useful information on Multi-Layer Insulation thermal blankets and aerogel. There are also some very helpful chapters on thermal testing, thermal environments and thermal contact information.
The only area that I found lacking sufficient detail was the sections on active thermal control systems (pumped fluids), such as those used on the international space station, all manned vehicles and on some space probes. This important spacecraft thermal control method is examined in two small chapters and the only manned system examined in the space shuttle orbiter. There are many more systems.
Finally, it should be noted that this book is highly technical and not geared towards the casual reader who is interested general spaceflight.
All Spacecraft Thermal Control Handbook: Fundamental Technologies’s Reviews
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Xantrex Technologies 852-2071 Xpower AC/DC Powerpack Solar With 400 Watt Inverter, Two AC Outlets, USB Port, And Digital Display
Oct 27th
|
Xantrex Technologies 852-2071 Xpower AC/DC Powerpack Solar With 400 Watt Inverter, Two AC Outlets, USB Port, And Digital Display
Product By Xantrex Technologies
Compare Prices & Buy From 28 Sellers
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Xantrex Technologies 852-2071 Xpower AC/DC Powerpack Solar With 400 Watt Inverter, Two AC Outlets, USB Port, And Digital Display Review
2009-09-09
By Sean Law (Richmond, VA)
Maybe my expectations were a little low but this baby worked very well for me. I ran a 19 inch LCD TV for 4 hours while tailgating which is the exactly amount of time I needed. I have purchased other more powerful power packs and they always crapped out and didn’t last. This one did the trick for me.
2009-06-24
By Ryley Isetter (Neptune, NJ)
Trying to go “green”, we bought this just for a simple, minor power source while away from outlets. We used it twice since we’ve had it, to run a 12V dc fan rated at 10w and 0.8 amps. We also charged a small iPod speaker set. A few months ago while charging, the fan started running so I unplugged it. I just tried to charge it now with the AC adapter, and the fan started and the alarm sounded with an error message of E04, overload on AC outlets. ? Nothing was plugged into any of its outlets. I unplugged it from the charger but alarm continued to sound. None of the buttons did anything. After an hour with the alarm still sounding, I took it apart and disconnected the battery. I waited 1/2 hr and reconnected battery. The alarm immediately sounded non-stop for another 1/2 hr till I disconnected battery.
What a waste of $150. It was used twice, never abused, and it craps out. Our $50 battery backup from Sears is still going strong after years of use, with 2 DC outlets that will take a AC converter, it does what we need. And as a plus, it will jump our car battery.
Just a bad unit, or….
2009-06-06
By Benjamin Spock Devries
This thing- weighed a lot- I mean, it’s a battery, so OK- so I drag this thing, charged, out to the jungle with me. Spontaneously, the alarm goes off without any way to shut it off, until the battery drained. Thanks for giving away my position! Then would not charge, would not respond, and there was no way to repair it.
I will NEVER buy anything from xantrex again !@#$%^&*(!!!!
2009-05-21
By Snorkboy (Ottawa, Ontario Canada)
Many Cons
- Battery not “user replaceable” (User manual recommends throwing the whole powerpack out when the battery can no longer take a charge)
- If you do take the unit apart to replace the battery, it is an uncommon type not available at battery specialists.
- Solar panel is too small to adequately charge the unit. Useful only as a top-up charger.
- My unit has locked up twice, where the buttons and display do not work and you need to take it apart to disconnect then reconnect the battery to reboot the internal microcontroller.
- Very difficult to take apart (to reboot the unit or change the battery).
- AC power adapter puts out too much voltage, causing the unit to complain about an overvoltage situation when it is left plugged in when fully charged.
- Loses its charge quickly when not plugged in.
- LED lights on both sides of the unit are wired to come on at the same time. No switch to disconnect one bank to double the runtime as a light source.
As a warning, if you do have one, do not leave it off its charger for longer than about 1 month or you can damage the battery.
2009-04-21
By David Arrants (San Francisco, CA)
I got this unit and only 1 out of two fully charges. they hold their charge for a long time so its not really a problem. I actually ran a 110 volt light all night and not until the am did the battery finally quit. So, I keeping them for Power outages. For that they are fine.
All Xantrex Technologies 852-2071 Xpower AC/DC Powerpack Solar With 400 Watt Inverter, Two AC Outlets, USB Port, And Digital Display’s Reviews
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