NNJ09BH0123RAppendix L A-Crew, Robotics, Avionics, and Vehicle Equipment (CRAVE)- Unrestricted Data Attachment L-2-A-1

NNJ09BH0123RAppendix L

A-Crew, Robotics, Avionics, and Vehicle Equipment (CRAVE)- Unrestricted

Data Attachment

L-2-A-1



Constellation Architecture Team (CxAT) Lunar

Lunar Surface SystemsAirlock Assessment

Suitlock-SuitportBulkhead Assessment

L-2-A-2



Habitat Bulkhead Options

Dus

t Cur

tain

Hat

ch

Three separate hatches

1 m x 1.5 m

0.76 m x 0.9 m (qty 2)

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Anthropomorphic Changes in Space

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HSIR Anthropometry

1st% ile American Femaleto

99th% ile American Male

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Lunar Stature

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Suited Stature

1.56 m (61.5” )*

2 m (79” )*

Same size PLSS

0.44 m (17.5” )

* 2” added from top of head to top of helmet

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Representative Rear Entry SuitMark III

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PLSS Docking Height (EVA Population)

0.3 m (12”)

0.15 m (5.7”)

Most of EVApopulation

Stoop

Step

TallestCrew Member

0.45 m (17.7” )

ShortestCrew Member

CommonHeight

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Suitlock BulkheadHatch Openings

1 m

2 m

0.3 m

DonningArea

0.76 m x 0.9 m

1 m x 1.5 m

0.3 m

3 m dia.

Step

0.96 m

99th ile MaleCrotch height

(minimal clothing)

0.03 m

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Hatch Size and Position Above Floor

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Suitport Requirements on Suit and PLSS

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Suitport Requirements on Bulkhead

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Selected OptionMarman Clamp

Suitport PLSSMechanism Zone

PLSS ReleaseMechanism

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Suitport Bulkhead (SPR Application)Sizing Envelopes

1 m2 m

0.3 m

DonningArea

0.76 m x 0.9 m(Opening)

0.3 m

Step

2.0 m dia.

0.86 m x 1.0 m (Mech Envelope)

3.0 m dia.

PLSS Hatch Release Mechanism

2.6 m dia.

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Suitlock Bulkhead (Habitat Application)1m PLSS sill height

1 m2 m

0.3 m

DonningArea

0.86 m x 1.00 m (Mech Envelope)

1 m x 1.5 (Opening)

0.3 m

3 m dia.

Step

3.25 m dia.3.5 m dia.

Hatch Frame Structure (around all hatches)

PLSS Hatch Cover

PLSS Hatch Release Mechanism

0.76 m x 0.9 m(Opening)

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Dimensional Considerations

Width (m) Qnty Total (m)Equip/Incapacitated crew

hatch opening 1 1 1Hatch structure (ea. side) 0.05 2 0.1

PLSS opening (30 in.) 0.76 2 1.52PLSS structure 0.05 4 0.2

2.82

Diameter (m) 3 3.25 3.5width at 1.8 m above deck 2.6 2.81 3.1

remaining width -0.22 -0.01 0.28

Only conditionthat accommodateshatch openings

NOTE: Confirm sandwich panel bulkheadwith this geometry of hatch openings

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Suitlock Operation Zones

0.9 m

0.87 m

DonningArea

Step

PLSShatch cover

PLSS Restraint Mech

SuitlockControls

PLSS Hatch Release Mech.

Leg angle forsuit entry/exit

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Summary

• Hatch within a hatch may be option with Marman Clamp• Preferred PLSS sill height ~ 1 m off deck • Incapacitated crew/equipment hatch sill ~ 0.3 m off deck• Increase Habitat diameter (3.25 to 3.5 m)

• Accommodate 2 PLSS hatches and crew/cargo hatch• Accommodate PLSS docking mechanism• Accommodate structure and hatch frame between openings• Accommodate 0.3 m donning area above hatch opening• Accommodate up to 0.3 m step for full anthropometric range

• SPR minimum “diameter” 2.6 m• Marginal donning area above hatch opening• “Diameter” may be shaped to capture donning envelopes

• Approximately 1 m required on either side of bulkhead• Suit leg angle• Donning volume for suit entry/exit

• Bulkhead structure needs to be revisited

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6.342m

Airlock

Descent Module

Ascent Module

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14.717 m

Descent Module

8.283 m

Radially 5 meters from equipment

Note – Assume a staircase exists for EVA crewmembers

Top View of Equipment

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Concept CharacteristicsPressurized Volume: 7.5 m^3Diameter: 1.75 m Height: 3.58 mCrew Size: 2+limited stowageMass including tunnel (one hatch): 1004 kgDepending on landing gear stroke, the deck will be no more than 6.3 m (TBR) off the surface.

Altair Airlock Data

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Illustration of Hab Module

LER Docked to Hab

Lunar Electric Rover (LER)

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A-Crew, Robotics, Avionics, and Vehicle Equipment (CRAVE)- UnrestrictedL-2-A-24



LER Rear ViewLER Vehicle is 3-Day Vehicle with 100 km Radiator of Influence.

LER Front View

Docking Hatch: allows pressurized crew transfer from Rover-to-Habitat, Rover-to-Ascent Module and/or Rover-to-Rover. Unpressurized EVA/IVA Transfer task can also occur.

Hatch Dimensions

1 m X 1.5 M

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A-Crew, Robotics, Avionics, and Vehicle Equipment (CRAVE)- UnrestrictedL-2-A-26

LER Dimensions

A= 2.54 m

B= 2.03 m

C= 0.48 m

D= 1.08 m

E= 1.22 m

F= 2.37 m

G= 2.90 m

H= 2.97 m

I= 3.00 m

AB

F

E

D

C

H

G

I



~44.5 cm

Ground Plane

Nominal Ground Clearance: 44.5 cmLowered Height: Ground Level

Base of LERWheel Wheel

The Base of the LER (height) is variable.

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Suitlock Flat Bulkhead on LERHatch Openings

DonningArea

0.72 m x 0.97 m

Step

(no equipment hatch between suit access hatches)

0.9 m

1

DonningArea

Step

Suit Access Hatch

Dust Gate Mech

SuitlockControls

Suit Access Hatch Release Mech.

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Internal Configuration of LER

Hatch Door (1m X 1.5 m)Suit Ports

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Incapacitated Crewmember Operations

• This scenario described below is only for illustration purposes. • It is not technical direction on a possible solution.

• Scenario: Use pulley/assist mechanism through side hatch

– Incapacitated crewmember scenario results in depress of LER cabin if brought through side hatch • Have to have capability to support both bringing in via side hatch depending on injury• External controls for cabin depress and side hatch opening

– Rescuer approaches Incapacitated crewmember• Note if buddy umbilical is needed, the following steps will be affected

– Rescuer drags Incapacitated crewmember to LER side hatch• Question: if acceptable, take time to lower chassis fully?

– Rescuer opens side hatch, attaches pulley/assist mechanism to Incapacitated crewmember and operates pulley/assist mech. to pull Incapacitated crewmember inside the cabin

– Rescuer connects Incapacitated crewmember’s vacuum line

– Rescuer egresses the cabin, closes the side hatch and initiates emergency repress

– With cabin at pressure, Rescuer may enter through the suit port (saving space inside the cabin and making doffing the suit easier) and administers medical care

• May be necessary to extract Incapacitated crewmember from suit depending on cause of incapacitation

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Documents

NNJ09BH0123RAppendix L A-Crew, Robotics, Avionics, and Vehicle Equipment (CRAVE)- Unrestricted Data Attachment L-2-A-1