Наноракета для наноспутников?

[поверхностный]

И что вращение в каждый конкретный момент времени идёт по ОДНОЙ оси. По-моему, это не столь сложное условие при выведении.

И да и нет.

Физически ось одна (в каждый конкретный момент времени), но она не совпадает с осями ракеты. И что делать системе управления?

С другой стороны, скорость вращения это векторная величина, она прекрасно раскладывается на три вектора - вращение по курсу, тангажу, рысканию. Гироскоп как раз и измеряет эти три проекции. Поэтому можно говорить о вращении по трем осям.

[Schwalbe]

http://www.novosti-kosmonavtiki.ru/phpBB2/viewtopic.php?t=11097

[SpaceR]

Хм, а почему именно этан?

Э. — газ, легко обращающийся в жидкость, его критические данные, по Ольшевскому, следующие:
---------------------------------------------
|                         | Крит. давление
|-------------------------------------------|
| + 35,0°              | 50,2 атм.
|-------------------------------------------|
| + 29,0°              | 46,7 атм.
|------------------------------------------|  
| + 5°                       | 40,4 атм.
|-----------------------------------------|
| 0,0°                        | 23,8 атм.
|-----------------------------------------|
| - 93,0°              | 1,0 атм.            |   Температура кипения жидкого Э.
|-----------------------------------------|
(Энциклопедический словарь Ф.А. Брокгауза и И.А. Ефрона)

Что-то не особо внушает доверия безопасность капсулированной ракеты при таких давлениях... Чуток перегрел/недоследил, и эге.
Или с пропаном (бутаном) у закиси зажигания устойчивого не получалось?

[SpaceR]

Или причина столь горячей признательности в этом:

Физиологическое действие

Обладает наркотическим действием.

Авторам, видимо, с этаном работать больше понравилось.  :lol:

[Monoceros]

Что-то не особо внушает доверия безопасность капсулированной ракеты при таких давлениях...

А с чего вы взяли что температура комнатная? В презентации пишут что chilled.

[SpaceR]

Что-то не особо внушает доверия безопасность капсулированной ракеты при таких давлениях...

А с чего вы взяли что температура комнатная? В презентации пишут что chilled.

Виноват, не глянул в переводчик... Но тем хуже для эксплуатационного удобства. И тем непонятнее.  :?

"Веселящий газ" + наркотический газ = дешёвая наноракета ?
Такой состав впору назвать "торчковый коктейльчик"... Особенно если добавить важное уточнение "применять охлажденным" :lol:
Посмотрим, приторчит ли от таких преимуществ минобороны США.

[поверхностный]

"дешевая наркоракета"

[Salo]

http://rnd.cnews.ru/tech/news/line/index_science.shtml?2011/03/16/432233

НАСА бросает частным компания "Вызов столетия"

16.03.11, Ср, 14:01, Мск

НАСА ищет партнеров для совместной работы над программами Night Rover Challenge и Nano-Satellite Launcher Challenge. Конкурс под пафосным названием Centennial Challenges ("Вызов cтолетия" [Шутливо] , по мнению учредителей, должен обеспечить США инновационный рывок и большие экономические выгоды.

НАСА хочет сотрудничать с негосударственными компаниями, которые способны создавать новейшие технологии, причем интерес космического агентства распространяется и на организации, не связанные с аэрокосмической промышленностью. В отличие от большинства конкурсов на предоставление грантов, в этот раз НАСА определит победителя только по результатам успешной демонстрации технологии.

Команды, участвующие в конкурсе Night Rover, должны будут продемонстрировать робота на солнечных батареях, способного работать в темноте, используя накопленную энергию. Призовой фонд Night Rover Challenge составляет 1,5 млн долл. Основная цель этой программы - в стимулировании инноваций по созданию технологий хранения энергии в экстремальных условиях, таких как поверхность Луны. Также эти технологии могут впоследствии использоваться для электрических транспортных средств и возобновляемых источников энергии на Земле. В настоящее время марсоходы, питающиеся от солнечных панелей, "спят" во время марсианской ночи. В НАСА надеются, что новые идеи Night Rover Challenge позволят планетоходам работать и в "ночную смену" и, возможно, создать новые технологии хранения энергии, которые найдут применение на нашей родной планете.
Задача конкурса Nano-Satellite Launcher Challenge - создать технологию вывода малого спутника на орбиту Земли с периодичностью два раза в неделю, призовой фонд составляет 2 млн долл. Цель проекта состоит в стимулировании инноваций в области недорогого доступа к околоземному пространству и одновременном поощрении коммерческой доставки наноспутников. Снижение стоимости надежной отправки на орбиту Земли небольших полезных нагрузок создаст для американских компаний новые рынки и расширит возможности студентов и исследователей.

Конкурс Centennial Challenge планируется широко освещать в американских СМИ и интернете, что станет отличной рекламной площадкой для множества изобретателей и поможет им найти спонсоров.

[SpaceR]

Задача конкурса Nano-Satellite Launcher Challenge - создать технологию вывода малого спутника на орбиту Земли с периодичностью два раза в неделю, призовой фонд составляет 2 млн долл. Цель проекта состоит в стимулировании инноваций в области недорогого доступа к околоземному пространству и одновременном поощрении коммерческой доставки наноспутников.

Ого, да это же практическое воплощение наших форумных фантазий "SUVOROV-PRIZE" !
Только реализовано снова не нами...

[Salo]

http://www.parabolicarc.com/2011/11/30/garvey-space-gets-nasa-contract-for-nanosat-launches/#more-32590

Garvey Space Gets NASA Contract for Nanosat Launches
Posted by Doug Messier
on November 30, 2011, at 5:35 am


Prospector 18 suborbital reusable launch vehicle. (Credit: Garvey Spacecraft)

GSC PR — Garvey Spacecraft Corporation (GSC) has been awarded a contract from the NASA Launch Services Program (LSP) at Kennedy Space Center, FL to provide a high altitude launch service for demonstration NanoSatellites. This contract consists of a single launch with potential extension at the Government's discretion to up to four additional launches.

NASA LSP plans to evolve this capability to provide low-cost, frequent near-term flight opportunities for universities and other academic institutions who are pioneering the development of CubeSat and NanoSat-class payloads. It is anticipated that the results and experiences from these entry-level flight projects will complement and contribute to subsequent orbital missions that LSP is also responsible for under its Educational Launch of Nanosatellite (ELaNa) program.

To satisfy NASA's requirement that the launch vehicle have at minimum one successful previous launch, GSC and its partner California State University, Long Beach (CSULB) are providing the Prospector 18 suborbital reusable launch vehicle (sRLV) that has already undertaken three flights since March of this year. The P-18 is the latest in a series of test vehicles that are establishing the foundation for an operational nanosat launch vehicle (NLV) capability.

"This LSP launch service leverages our team's ongoing efforts to develop an operational nanosat launch vehicle that is dedicated to this emerging market," remarked GSC's CEO John Garvey. "Like the payload providers, we expect to learn a great deal and intend to apply these insights to an NLV that can take such spacecraft all the way to orbit."

As part of the educational outreach element of this program, CSULB students will play a lead role in adapting the P-18's current payload accommodations to manifest up to four fixed CubeSats and as well as a P-POD deployer unit that can eject up to three additional CubeSats during flight. CSULB professor Eric
Besnard observed that "this is another great opportunity for CSULB students to get hands-on experience in working with small payload developers, integrate their experiments into the rocket and participate in launch operations."

The first P-18 flight under this initiative is planned to occur as soon as payloads become available, currently anticipated to be around mid-2012. The GSC/CSULB team will integrate these payloads into the rocket at CSULB's Aerospace Systems Integration Lab in Long Beach. Flight testing will take place at a private test site owned and operated by the Friends of Amateur Rocketry (FAR) that is located outside of Mojave, CA.

Garvey Spacecraft Corporation is a small aerospace R&D company located in Long Beach, California. It is focused on the cost-effective development of advanced space technologies and launch vehicle systems. GSC is working closely with California State University, Long Beach on the development of a Nanosat Launch Vehicle (NLV) that is optimized to provide dedicated launch services for CubeSat and NanoSat-class spacecraft and payloads.

http://www.parabolicarc.com/2011/12/02/garvey-spacecraft-selected-for-nasa-sbir-award/

Garvey Spacecraft Selected for NASA SBIR Award
Posted by Doug Messier
on December 2, 2011, at 6:30 am

Garvey Spacecraft of Long Beach, Calif., has been selected for a NASA Small Business Innovation Research award to develop alternative hydrocarbon propulsion for a nano-sat/micro-sat launch vehicle. No terms were mentioned, but SBIR awards are typically for six months for amounts up to $125,000. The award is contingent upon contract negotiations.

"The technical innovation proposed here is the application of an alternative hydrocarbon fuel – densified propylene, in combination with liquid oxygen (LOX) – that has the potential to enhance the performance of a proposed Nano / Micro Launch Vehicle (NMLV) enough such that a simple two-stage, pressure-fed configuration will be sufficient for orbital missions. Besides eliminating the third stage, the absence of turbopumps reduces hardware costs, improves overall system reliability and simplifies engine start-up," the proposal reads.

A full description of the project follows after the break.

PROPOSAL TITLE: Alternative Hydrocarbon Propulsion for Nano / Micro Launch Vehicle

TECHNICAL ABSTRACT

The technical innovation proposed here is the application of an alternative hydrocarbon fuel – densified propylene, in combination with liquid oxygen (LOX) – that has the potential to enhance the performance of a proposed Nano / Micro Launch Vehicle (NMLV) enough such that a simple two-stage, pressure-fed configuration will be sufficient for orbital missions. Besides eliminating the third stage, the absence of turbopumps reduces hardware costs, improves overall system reliability and simplifies engine start-up. This project addresses Section 1.2.5 of the Technology Area 1 Roadmap as it raises the TRL of both a non-toxic alternative hydrocarbon fuel (propylene) and also propellant densification (subcooling propylene) to increase vehicle mass fraction performance. Programmatic innovation makes it possible to bring this propulsion technology to a TRL of 6 by the end of Phase II in the form of a 5K lbf-LOX/propylene first stage engine. This will be accomplished by leveraging an ongoing NMLV development program that has already produced a flight-proven LOX/ethanol 4.5K lbf-thrust engine that features a long-duration silica-phenolic ablative chamber.

POTENTIAL NASA COMMERCIAL APPLICATIONS

Low-cost, two-stage dedicated NMLV for ELaNA-class academic CubeSat missions needing delivery of 10 kg to 250 kg circular orbits;

Enhanced NMLV featuring a clustered set of booster stages for larger nanosat (20 kg) payloads that require circular orbits on the order of 450 km

Deep space missions and planetary landers requiring higher performance chemical propulsion and for which propylene would be a storable fuel because of low environmental temperatures

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS

Commercial imaging constellations that require dedicated NMLV service to achieve total control over trajectories and schedules

[Salo]

http://www.garvspace.com/

Многоразовая суборбитальная ракета Prospector 18 (летала три раза):

Первый полёт:

http://www.youtube.com/watch?v=VKDt5TUK3rU&feature=player_embedded

[Salo]

Второй полёт:
http://www.youtube.com/watch?v=FlkMiCtCxg0&feature=player_embedded
http://www.youtube.com/watch?v=jOiaxfGpudM&feature=player_embedded

[Salo]

Третий полёт:
http://www.youtube.com/watch?v=UPXTQdPYPkM&feature=player_embedded
http://www.youtube.com/watch?v=JLMfNqmUrE8&feature=player_embedded
http://www.youtube.com/watch?v=XuSCE99yvII&feature=player_embedded

[Salo]

http://www.garvspace.com/NLV.htm

Nanosat Launch Vehicle (NLV)

The NLV is a two-stage vehicle that is being designed to have the capability to launch nanosat-class (up to 10 kg) payloads to low Earth orbit. GSC is developing this concept in cooperation with CSULB for the academic and small payload users market. Recent flight demonstrations involving the reusable P-7 test vehicle have focused on operationally responsive spacelift (ORS) issues for the Air Force, while the next generation of prototypes is addressing vehicle design and performance objectives.

[mefisto_x]

Сколько может стоить проектирование и производство такой ракеты в России? Ну не совсем такой а чтобы можно было вывести на орбиту микро-спутник

[Salo]

ZOOR пишет:

Интерорбитал в 2011 получила NASAвский SBIR-грант и у нее даже есть манифест на 2 пуска (в первом, кстати, NASAвский кубосатик прописан)

Может, включить ее для порядка?

http://www.interorbital.com/

[Salo]

http://www.interorbital.com/Neptune%20Modular%20Page_1.htm

NEPTUNE MODULAR SERIES LAUNCH VEHICLES


Interorbital Systems (IOS) is developing a new generation of low-cost, rapid-response manned and unmanned orbital launch vehicles. NEPTUNE Modular Series rockets are designed for minimum cost and maximum reliability. Unnecessary, expensive, complex, failure-prone, and performance-limiting systems such as wings and turbopumps have not been included in their design. Since the NEPTUNE Modular Series launch vehicles are designed to be deployed fr om a private island launch site or from the Sea, launch costs will be relatively insignificant (compared to standard spaceport fees), and launch scheduling will be based on customer demand (not on placement in a spaceport's launch rotation). The IOS modular rocket system is an evolved version of a similar system developed by OTRAG in the 1970's. Lutz Kayser, the former head of the OTRAG team, is a primary consultant on the IOS project.

MODULAR ROCKET SYSTEMS
Each member of the NEPTUNE Modular Series of launch vehicles is assembled from multiple Common Propulsion Modules (CPMs). Payload capacity can be varied by increasing or decreasing the number of CPMs.

COMMON PROPULSION MODULE
Each Common Propulsion Module is composed of four propellant tanks and a single throttleable, ablatively-cooled rocket engine. Depending on the configuration, the modules can operate in either blowdown or pressurant tank-fed modes. The capacity of the propellant tanks is regulated by varying their lengths. Construction costs are kept low by utilizing many off-the-shelf components and state-of-the-art assembly line methods.

LIQUID ROCKET ENGINES AND PROPELLANTS
A single fixed, throttleable, low-thrust, liquid rocket engine powers each CPM. When the CPMs are clustered in multiples of three or four per stage, differential throttling of opposing rocket engines provides pitch, yaw and roll control. Stand-alone CPMs will be steered by four small gimbaled vernier rocket engines. Storable, high-density white fuming nitric acid (WFNA) and turpentine/furfuryl alcohol are the CPM's primary propellants. These low-cost, storable, environmentally friendly propellants provide reliable, efficient, hypergolic ignition.

AERODYNAMICS
The aerodynamic properties of the uniquely configured NEPTUNE Modular Series rockets have been extensively analyzed. Data shows the thrust to drag ratio is acceptable with values less that that of the Space Shuttle. In general, the rockets follow a slow build-up of velocity in the region below 10 km (32,800 ft.), reaching Mach 1 at between 25,000 ft. and 35000 ft. with the rocket's velocity just rising above Mach 4 at an altitude of 33 km (110,000 ft). At this altitude, the atmospheric pressure is extremely low (only 0.125 psi) (sea level pressure = 14.7 psi). Since orbital velocity is around Mach 25, the majority of the acceleration (90%) takes place outside of the denser parts of the atmosphere wh ere the drag is extremely small.

MULTIPLE ENGINES
Launch vehicles with multiple engines have been in use since the beginning of the space age. The Saturn 1B had 8 booster engines, 6 stage two engines, and 2 stage three engines (a total of 16 engines). The Soyuz three-stage rocket has a total of 34 engines, with the upper stage engines included. When looking at the the engine view of the NEPTUNE Modular series rockets, one sees not only the booster engines, but also all of the upper stage engines. This is due to the parallel staging configuration. With the standard stacked stage configuration, the upper stage engines are not visible. Below is an engine view of the Soyuz launcher with 32 booster and vernier engines. The Soyuz rocket is one of the most reliable rockets in the world.

NEPTUNE 9 (N9)
The modular N9 rocket is a three stage (parallel staged) satellite launch vehicle capable of launching 70-Kg payload into polar low-earth orbit. It is composed of 9 Common Propulsion Modules. The engine count breaks down to 6 stage-1 engines, 2 stage-2 engines, and 1 stage-3 engine (a total of 9 engines). N9 was designed specifically to support the TubeSat, CubeSat, and general small-sat community.



NEPTUNE 36 (N36)
The N36 is a three-stage (parallel staged), medium-lift launch vehicle capable of placing a 1000-Kg payload into polar low-earth orbit or accelerating a 190-Kg payload to Earth-escape velocity. The rocket is composed of 36 Common Propulsion Modules. The engine count breaks down to 24 booster engines, 8 stage two engines, and 4 stage three engines. The N36 is slated to launch the Google Lunar X PRIZE SYNERGY MOON lander/rover to the Moon. It will also be utilized to launch a two-person crew module into low earth orbit for short orbital tourism missions. The crew module (CM-2) is presently in development.

CREW MODULE 6 (CM-6)
The CM is designed to accommodate five expedition crew members and one command pilot. The 6-person crew will be seated radially around a centrally located service compartment access hatch. Each crew member has a window providing excellent visibility. The CM is attached to the forward section of the rocket and has the following primary components: emergency escape system, life-support system, electric power system, docking collar, retro-rocket de-orbit system, attitude control system (ACS), parachute recovery system, and an aft heat-shield for reentry.



COMMON PROPULSION MODULE STATIC ENGINE TEST
Click on the image below to see an excerpt of a static throttling test of a Common Propulsion Module altitude liquid rocket engine. The test was made at Interorbital's Alpha Test Site, located at the Mojave Spaceport. Rocket engine ignition is hypergolic. When the propellants exit the rocket engine's injector, they ignite on contact. Nozzle expansion ratio is ambient.



NEPTUNE MODULAR SERIES TEST PROGRAM
NEPTUNE Modular Series rocket components have been undergoing ground and flight tests since 1999. Testing includes ongoing static rocket engine firings as well as launches of the IOS Neutrino sounding rocket. The IOS Neutrino sounding rocket (see photo below) has provided valuable data on rocket engine and hypergolic propellant performance in flight, Inertial Measurement Unit and Guidance Computer operation under high acceleration and vibration conditions, data logging and telemetry systems, and payload recovery systems. It will provide on-orbit start/stop capability for interorbital transfer operations.



Interorbital Systems will be carrying out further static rocket engine testing as well as at least three low-altitude (50,000 ft) flight tests of a single Common Propulsion Module. A photograph of a Common Propulsion Module Test Vehicle (CPM TV) on its Mobile Launch Trailer (MTA) is shown below. A multiple CPM flight test will complete the flight test program before the first orbital launch from Tonga or the Pacific Ocean in 2012.




Payload space is currently available on these pre-orbital test flights at a cost of $500.00 per kilogram ($227.00 per pound). Payloads can include TubeSats, CubeSats, or single payloads weighing up to 30 kg. Universities, companies, or individuals are encouraged to contact Interorbital if they would like to fly a test payload.

[Salo]

http://www.hawaii.edu/offices/op/innovation/taylor.pdf




http://hsfl.hawaii.edu/HSFL_Overview_071910.pdf

[Дмитрий В.]

http://www.interorbital.com/Neptune%20Modular%20Page_1.htm

NEPTUNE MODULAR SERIES LAUNCH VEHICLES[/size]

ОТРАГщина какая-то... :twisted:

[Glaurung]

http://www.interorbital.com/Neptune%20Modular%20Page_1.htm

NEPTUNE MODULAR SERIES LAUNCH VEHICLES[/size]

34 движка у Союза улыбнуло :lol: