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Passive vs. Parachute System Architecture for Robotic Sample Return VehiclesThe Multi-Mission Earth Entry Vehicle (MMEEV) is a flexible vehicle concept based on the Mars Sample Return (MSR) EEV design which can be used in the preliminary sample return mission study phase to parametrically investigate any trade space of interest to determine the best entry vehicle design approach for that particular mission concept. In addition to the trade space dimensions often considered (e.g. entry conditions, payload size and mass, vehicle size, etc.), the MMEEV trade space considers whether it might be more beneficial for the vehicle to utilize a parachute system during descent/landing or to be fully passive (i.e. not use a parachute). In order to evaluate this trade space dimension, a simplified parachute system model has been developed based on inputs such as vehicle size/mass, payload size/mass and landing requirements. This model works in conjunction with analytical approximations of a mission trade space dataset provided by the MMEEV System Analysis for Planetary EDL (M-SAPE) tool to help quantify the differences between an active (with parachute) and a passive (no parachute) vehicle concept.
Document ID
Document Type
Conference Paper
Maddock, Robert W. (NASA Langley Research Center Hampton, VA, United States)
Henning, Allen B. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Samareh, Jamshid A. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
June 20, 2016
Publication Date
March 5, 2016
Subject Category
Report/Patent Number
Meeting Information
2016 IEEE Aerospace Conference(Big Sky, MT)
Funding Number(s)
WBS: WBS 432938.
Distribution Limits
Public Use Permitted.

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