Home - Search - Browse - Alphabetic Index: 0- 1- 2- 3- 4- 5- 6- 7- 8- 9
A- B- C- D- E- F- G- H- I- J- K- L- M- N- O- P- Q- R- S- T- U- V- W- X- Y- Z
TRW Mars
Part of American Mars Expeditions
TRW Mars
TRW Mars
Credit: © Mark Wade
American manned Mars expedition. Study 1963. In 1963 TRW designed a Mars expedition using aerobraking at both Mars and Earth, and a swing-by of Venus on return.

Status: Study 1963. Gross mass: 650,000 kg (1,430,000 lb). Height: 17.80 m (58.30 ft).

It found that this approach could reduce the expedition mass in low earth orbit by a factor of five, allowing chemical propulsion to be used.

NASA Ames issued a contract to TRW in 1963 to study a non-nuclear manned mission to Mars with minimum weight achieved through maximum mass reduction measures and innovative mission scenarios. A landing date in 1975 was assumed. Aerobraking on arrival at Mars and on return to earth was the biggest driver in achieving the weight reduction goal.

The mission profile was a fast opposition-class mission of 400 to 450 days, with ten days spent on the surface. The spacecraft was shaped like an Atlas nose cone with a conical tip, cylinder, and aft skirt. The 11.4 metric ton Mars Excursion Module used the same shape. A Martian atmosphere with a surface pressure 10% that of earth was assumed.

The mission profile was as follows:

The study concluded that an all-chemical 1975 mission using a conventional rocket braking scenario would weigh 3250 metric tons, while the TRW aerobraking spacecraft would weigh only 650 metric tons.

TRW Mars Expedition Mission Summary:

Crew Size: 6.



Family: Mars Expeditions. Country: USA. Propellants: Lox/LH2. Agency: TRW. Bibliography: 49, 591.
Photo Gallery

TRW Mars ExplodedTRW Mars Exploded
Credit: © Mark Wade



Back to top of page
Home - Search - Browse - Alphabetic Index: 0- 1- 2- 3- 4- 5- 6- 7- 8- 9
A- B- C- D- E- F- G- H- I- J- K- L- M- N- O- P- Q- R- S- T- U- V- W- X- Y- Z
© 1997-2019 Mark Wade - Contact
© / Conditions for Use