Balloon Spacecraft

44 %
56 %
Information about Balloon Spacecraft
Education

Published on January 16, 2008

Author: Prudenza

Source: authorstream.com

The Balloon Launch “Spacecraft” and Environment:  The Balloon Launch “Spacecraft” and Environment ACES Presentation T. Gregory Guzik February 20, 2003 Conditions During Flight:  Conditions During Flight Flight lasts 2 to 3 hours Max altitude 80 kft to 110 kft Max range (20 miles to infinity) Try to keep within ~40 miles range Gets cold at the tropopause (~ -60o C) Any water vapor will condense out and cause frost Good vacuum ( < 0.02 atmosphere) Landing can be rough (shock, trees, rocks, dragging) High velocity during initial descent (~500 mph) Cartoon of BalloonSat Train:  Cartoon of BalloonSat Train Typical Flight Profile:  Typical Flight Profile Views of Balloon Launch:  Views of Balloon Launch Ground Perspective Balloon Perspective Balloon Burst at ~100,000 ft:  Balloon Burst at ~100,000 ft Payload is Returned Safely to the Ground by Parachute:  Payload is Returned Safely to the Ground by Parachute Temperatures During Flight:  Temperatures During Flight External temperature Minimum of –60o C Internal temperature Minimum of –25o C Preliminary Balloon Layout:  Preliminary Balloon Layout FAA rules Low density Single box < 2.7 kg Total payload < 5.4 kg Weight estimate Parachute 300 g Primary beacon 734 g Backup beacon 515 g Cabling 122 g Contingency 250 g Payloads 3520 g Weight Trade Offs:  Weight Trade Offs Note that 3520 g / 5 = 704 g Could support up to three payloads of 1 kg each per flight Last two payloads require second flight Require recovery of first flight Require two consecutive launch days Trade “weight coupons” between payloads i.e. Limit all 5 payloads to 3500 g Limit each payload to 700 g Option A: Central Telemetry:  Option A: Central Telemetry Spacecraft controls telemetry by signaling each payload in turn when it is time to transmit Payload would return a predefined format packet to the primary beacon over RS232 bus T#ddd,ddd,ddd,ddd,ddd,ddd,bbbbbbbb,string Option A: Trade Offs:  Option A: Trade Offs Extra weight in spacecraft systems Reduced weight limit on all payloads Extra cost to develop this spacecraft service Allocate $75 of payload budget to pay for this service Slightly increased software complexity Significantly increased interface complexity No need to store everything on-board or do own telemetry system Option B: Store Onboard:  Option B: Store Onboard No cost hit, minimize weight constraint, no interface issues Store in EERAM No addition components needed Lifetime of EERAM limited Major problems if the code is wrong Store in auxiliary memory chip Avoid EERAM problems Significantly increased storage Increased software complexity Payload recovery required Option C: Payload Telemetry:  Option C: Payload Telemetry Would need to use 5 W HAM radio 0.5 W FRS radio insufficient for balloons Would need two radios at $300 each Increased payload weight ~170 g for radio, 150 – 200 g for extra battery Would need ground station Spacecraft ground station channels are used by beacons Charge to IWG:  Charge to IWG Meet now in room 331 for 30 to 45 minutes and bring back decisions on the following issues. How to handle the payload weight issue. How to handle to data storage / telemetry issue.

Add a comment

Related presentations

Related pages

NASA's Scientific Ballooning Program - Astrophysics ...

New NASA Balloon Successfully Flight-Tested Over Antarctica NASA and the National Science Foundation have successfully launched and demonstrated a newly ...
Read more

Vega program - Wikipedia, the free encyclopedia

The Vega program was a series of Venus missions that also took ... The balloons were tracked by two networks of 20 ... Vega program; Spacecraft missions to ...
Read more

Balloons on Mars - Mars Exploration: Technology

Balloons can fly one hundred times ... The Mars balloon would be deployed soon after the spacecraft enters the Mars atmosphere and would be ...
Read more

Vega 2 - Wikipedia, the free encyclopedia

Vega 2 spacecraft; Vega solar system probe bus and landing apparatus (model) ... The Vega 2 Lander/Balloon capsule entered the Venus atmosphere ...
Read more

Interview: Seattle girls launch a balloon spacecraft to ...

Our guests on the GeekWire radio show this week are Rebecca Yeung, 10, and Kimberly Yeung, 8 — two sisters from Seattle who built a spacecraft out of wood,
Read more

Homemade Spacecraft - Space Balloon - YouTube

Homemade Spacecraft - Space Balloon a53mp. Subscribe Subscribed Unsubscribe 87 87. ... Video from a camera attached to a weather balloon that ...
Read more

Balloons - Mars planet facts news & images | NASA Mars ...

Balloons can fly one hundred times closer to the ... a future Mars balloon would deploy soon after a spacecraft entered the Mars atmosphere and would ...
Read more

Balloon Rides to Near-Space for $75,000 a Seat

You don't have to climb aboard a rocket ship to be a space ... Balloon Rides to Near-Space for ... World View's spacecraft and operations fall ...
Read more

Vega 2 Balloon - NASA - NSSDC - Spacecraft - Details

Spacecraft and Subsystems. The Vega balloon probe comprised a 3.4 meter diameter balloon ... , The VEGA Venus balloon experiment, Science , 231 ...
Read more

Vega 1 Balloon - NASA - NSSDC - Spacecraft - Details

Description. A constant-pressure instrumented balloon aerostat was deployed from the upper heat protection hemisphere of each if the two Vega lander craft ...
Read more