Page 4
College Station, Texas
Wednesday, March 24, 1971
THE BATTAUC 1
IHE 8-
Camp
Student studies gas turbine as engine for lunar rovet
(
A power unit that could fur
nish efficient mechanical energy
and water as a by-product has
been investigated by an A&M
student for use on the moon.
Frankie D. Allen of Amarillo
studied the gas turbine as a pos
sible engine for a lunar rover.
A turbine operates by direct
ing a stream of hot gases against
the blading of a turbine rotor. It
offers the advantages of an in
ternal combustion engine with
out the complicated mechanics of
piston-type reciprocating motion.
Allen said that present moon
power requirements are satisfied
by fuel cells and nuclear power,
both having advantages for the
particular jobs to which they are
applied.
With man making repeated
moon landings and approaching
the point of longer lunar stay-
times, Allen said, new fields of
technology need to be opened to
supply his needs, among them
motive power over the lunar sur
face and usable water.
“By using hydrogen as the fuel
and an oxygen oxidizer, the tur
bine would produce a gallon of
water per hour for living purpose
use,” Allen, a senior aerospace
engineering major, said.
His figures are based on a 15
horsepower gas turbine engine,
which he calculated would be suf
ficient to drive a 600-pound rover
(100 pounds moon weight) over
traversable lunar terrain.
Allen noted in a, report on his
study to Dr. Charles A. Roden-
berger that the hydrogen-oxygen
combination has several advan
tages, including water produc
tion, high specific fuel consump
tion and liquifying action of both
fuel and oxidizer for easy trans
portation.
The axial flow turbine, em
ployed primarily in aircraft en
gines, is most widely used«
present.
Turbine efficiency increais
with higher operating temper,
tures. Current metals technoluj
limits extreme temperatures,
Allen employs a porous turtis
blade through which coolant
be pumped.
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