Author Topic: LOFTID Demo for Mars EDL  (Read 1783 times)

Offline VSECOTSPE

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LOFTID Demo for Mars EDL
« on: 10/10/2022 01:06 am »

Happening this week...

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LOFTID is scheduled to launch Tuesday, Nov. 1, as a secondary payload with the National Oceanic and Atmospheric Administrationís JPSS-2 polar-orbiting satellite from Vandenberg Space Force Base in California.

After hitching a ride to space aboard a ULA Atlas V rocket, LOFTID will inflate and then descend back to Earth from low-Earth orbit to demonstrate how the inflatable heat shield design can slow down a spacecraft to survive atmospheric entry. This technology could support landing crew and large robotic missions on Mars, as well as returning heavier payloads to Earth.

https://www.nasa.gov/press-release/nasa-invites-media-to-learn-about-inflatable-heat-shield-demo

Offline woods170

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Re: LOFTID Demo for Mars EDL
« Reply #1 on: 10/10/2022 08:44 am »
LOFTID is not a mission to Mars. Does not belong in this section.

It is being discussed here: https://forum.nasaspaceflight.com/index.php?topic=42483.0

Offline VSECOTSPE

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Re: LOFTID Demo for Mars EDL
« Reply #2 on: 10/10/2022 02:12 pm »

LOFTID is an EDL demonstrator for large Mars surface payloads.  LOFTID wouldnít exist but for NASAís future Mars aspirations.  Folks interested in future Mars missions might not be following an Atlas launch thread.  And folks following an Atlas launch thread might not want a big Mars discussion in their thread.  Thatís why I posted it here.

Thereís confusion in some quarters on this site regarding whatís necessary for large Mars EDL.  Someone recently posted about using Orion to land on Mars, for example.  A little sunlight on LOFTID and similar work towards Mars, even if itís not an actual Mars mission, canít hurt.

Offline LMT

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Re: LOFTID Demo for Mars EDL
« Reply #3 on: 10/23/2022 04:30 am »
LOFTID might have a role in fleet-scale SpaceX cargo delivery.

At a versatile LEO self-filling depot, cargo could be attached to inflatables for Mars transit (inflatable tug and landing tanks, and inflatable LOFTID-style decelerator). 

150-t, 8-m cargo would sit above an upscaled decelerator and beneath landing tanks.  Previously, NASA HIAD was modeled at 18.8 m for MAV with diameter of 9 m and wet entry mass of 56 t.

Given the greater mass of a Starship cargo, it might make sense to design such a LOFTID system to withstand repeated entries:  first for capture, then for landing.  A capture orbit could cut landing EDL speed from 6.2 km/s reference to ~ Viking's 4.5, dropping final entry KE roughly in half.
« Last Edit: 10/23/2022 05:11 am by LMT »

Offline LMT

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Re: LOFTID Demo for Mars EDL
« Reply #4 on: 11/10/2022 09:13 pm »

Online leovinus

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Re: LOFTID Demo for Mars EDL
« Reply #5 on: 11/18/2022 04:18 pm »
NASA calls test of inflatable heat shield a success

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Flight testing such a large aeroshell will also be a challenge. Del Corso said that NASA has looked at ways of demonstrating it by returning a Cygnus cargo spacecraft or even an International Space Station module.

https://spacenews.com/nasa-calls-test-of-inflatable-heat-shield-a-success/

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