FLIGHT International, 11 July 1963
conditioning being accomplished by
AiResearch GTCP85-115. Garrett AiResearch is a division of the Garrett Corp,
Los Angeles, Calif. In a joint description,
the companies state, "not only has this
system been integrated in this way between
two major world specialists in such equipment but the field service and overhaul
programmes may also take advantage of
facilities and experience available in both
European and American fields of operation." In flight the air-conditioning system
is of the standard bootstrap type taking air
tapped from the engine compressor. On
the ground, when the engines have stopped,
the GTCP85-115 gas turbine furnishes the
air bleed and electrical power.
Two items of equipment by Rotax Ltd,
Willesden Junction, London NW10, are
incorporated in the electrical generating
system of the One-Eleven, besides a high
energy ignition unit on each engine and
sundry switches and valves. The first is a
static inverter, employed as an emergency
standby for supplying power to all essential
instruments. Its outstanding feature is that
73
are five motorized spherical plug valves
liin diam and one of £in diam. In the
hydraulic system there are two motorized
and two manually operated spherical plug
valves. Salient features of the motorized
SP valve, it is said (see illustration), "are
its compactness, full bore, low torque and
the sure sealing of the flexible annular
diaphragms, in conjunction with the spring
loaded seats. Thermal relief is an inherent
advantage of the Saunders design and, if
necessary, SP valves can be arranged to
relieve at pressures higher than working
pressures. In the aircraft's domestic water
system there are four Saunders valves—
one of the spherical plug type and the other
three of diaphragm pattern. It is a feature
of the diaphragm pattern valve that the
fluid makes contact only with stainless
steel and the processed rubber diaphragm.
Moreover, these valves are free from any
bacteria-secreting pockets." Diaphragm
valves supplied for the One-Eleven's domestic water system have their operating mechanism isolated from the water by the
closure diaphragm, so that icing-up risk is
eliminated.
Miniature Rocket-motor A 601b-thrust
pulse-modulated rocket for space-vehicle
attitude-control systems has been announced by Vickers Inc, Detroit 32, Mich.
It has been developed under a NASA contract awarded by the Manned Spacecraft
Center, Houston, Texas.
A major objective of the programme was
the development of a pulse rocket offering
the inherent reliability necessary for manned
spaceflight. Vickers state that their singlesolenoid concept is aimed at reliable synchronization of the bipropellants N 2 0 4
and N 2 H 4 /UDMH. Reliability of electrical components is provided by the use
of two independent coils in the solenoid.
High response is obtained by minimizing
the space between the valve seats and injector, and by maintaining close integration between the solenoid, propellant
valves and combustion chamber.
USA
Mk 4 SP motorized valve by Saunders Valve
Co Ltd. A feature of this valve is its resistance
to co//ect/on of water droplets and ice crystals
in the body, thus obviating seizure by icing
it is designed to give full output of 300VA,
115V at 400 c.p.s. from an input which can
vary between 20 and 29V d.c. The inverter,
which has no moving parts, is one of the
latest range of Rotax components employing power transistors; in this instance they
a
re in a switching mode to generate a recangular waveform, with the switching rate
maintained constant by a stable sinusoidal
oscillator. The ambient temperature range
of this inverter (which is fully tropicalized)
is -40°C to +50°C at 35,000ft. The
second item by Rotax is an under-voltage
sensing unit. As its name implies, this component monitors the voltage at the busbars,
and incorporates relays to cut out the nonessential loads on the d.c. system if the
voltage falls below a predetermined limit.
Valves by Saunders Valve Co Ltd,
Grange Road, Cwmbran, Monmouthshire,
form part of the equipment in the hydraulic
and fuel supply systems and also feature in
cabin equipment. In the fuel system there
Mr Berlin's Retirement Don R. Berlin,
formerly vice-president and general manager
of The Boeing Company Vertol Division,
and more recently vice-president-consultant to the division, retired on July 1 after
more than four decades in aviation as an
engineer and executive. Paying tribute to
Mr Berlin, the company state that "under
his leadership, the Vertol organization produced the HUP, H-25, H-21 and Vertol 44
piston-engine helicopters for United States
and foreign military services, and for
civilian use. The organization also carried
out the research and design work that
culminated in the CH-47A Chinook for the
US Army and the Model 107, now being
produced in quantity for the US Marine
Corps, the Royal Canadian Air Force, the
Royal Swedish Navy and Air Force and
New York Airways."
Increasing Beech 18 Range Aerospace
Products Inc have produced a wing tank
fuel system which increases the fuel capacity of a Beech 18 by 85 US gal. This system
is composed of four 21-gal fuel tanks, two of
which are interconnected on each outer
wing panel readily accessible for inspection or removal from the bottom of the
wing. The tanks are equipped with standard Beechcraft fillers, Liquidometers,
separate fuel strainers and sump systems.
Installation of this FAA-approved system
is "extremely simple," the tank being
mounted in the wings without need for
major structural changes or modifications.
Literature illustrating a wing tank system
is available from Aerospace Products
Inc, 5523 Satsuma Ave, North Hollywood, Calif.
The Vickers Inc 60lb-thrust
accompanying news-item)
rocket
(see
Saturn Sensors Infra-red horizon sensors,
to be used as part of the Saturn space
booster's guidance system, will be manufactured by the electronic systems and
products division of the Martin Co, a
division of Martin Marietta Corp, Baltimore 3, Md, under an $827,000 contract
from NASA's Space Flight Center. This
also calls for design, development, manufacture and testing of a number of more
advanced horizon sensors, to be used with
Saturn's inertial guidance system on 1965-66
spaceflights.
Nichols' European Representatives The
W. H. Nichols Co, 48 Woerd Avenue,
Waltham 54, Mass, manufacturers of
Gerotor internal gear pumps, recently
appointed Browne & Shaw Co, 181
Beckenham Road, Beckenham, Kent (BEC
5749/5891) as sole European representatives.
Gerotor pumps are widely used in the
aviation industry for lubrication, scavenge
and booster purposes on powerplants,
helicopter transmissions and electronic coolant pumping in aircraft and missiles, and are
at present being used in Europe by licensed
manufacturers of US equipment such as
aircraft engines and c.s.u. drives.
Of special interest to manufacturers is
the availability of separate rotor elements
only, allowing assembly direct on to the
equipment drive shaft and thus making for
design simplification, coupled with effective
reduction of bulk and weight.