“descended”48 pages
- p. 326 …The fact it descended there was not unusual. Over the course of Project MoGUL,
several balloons…
- p. 427 …This switch completes a circuit through a relay operated
ballast valve whenever the balloon system descends…
- p. 429 …Whenever the balloon
system subsequently descends past control altitude~ ballast
is made to flow, maintaining the…
- p. 441 …When the system again descends to 2.5 11 ()(X), the pen arm comes into
contact…
- p. 445 …ft.) to float for another
hour before descending.
The advantages of this type .t'light for…
- p. 468 …on ascent; as the balloon began to descend to a region
ot higher pressure. a minimum…
- p. 472 …oration of the electrolyte) and the balloon descends, simple
displacement control becomes effect when the high…
- p. 473 …Then, with both controls operating, bilast
will flow only on the descending and floating portions of…
- p. 479 …rapid descent
after the balloon system has descended to some critical value, say
20,000 feet…
- p. 480 …Through this rupture, the lifting gas can es-
cape, and the balloon descends, using the upper…
- p. 490 …If a system in equilibrium in the stratosphere were to lose lift
and descend. the compression…
- p. 538 …Released trom .Alamogordo, New Mexico, 0509 MST, July 2, 1947
Descended at Cloudcroft, Hew Mexico
Using…
- p. 548 …will not cause the bal-
loon to descend as long as the remaining buoyancy is equal…
- p. 549 …seen descending 18 hours after release.
Figure 13
balloons probably
several hours, as
One balloon was…
- p. 557 …The finder
reported seeing the balloon descend 35 hours after release.
Sinoe the ballast flowing to…
- p. 558 …The .001" polyethylene balloon
was observed descending 22 hours later a.f.ter traveling mo!"e…
- p. 562 Fligllt 6~z Released from Alamogordo, New Mexico, 1116 MST, Kay 13, 1948
Descended at Alamogorde…
- p. 570 …A ballast meter
waa in use, and no ballast flow was recorded until the balloon descended…
- p. 572 …S.T.)
Figure 34
Since the balloon ttid not descend far enough below its maximum altitude…
- p. 573 …N.M.- 0511 MST, 10 AUG 1948
DESCENDED AT ROSWELL,N.M.- 1630 MST, 10 AUG…
- p. 576 …Figure 38
the balloon was slowly descending, the temperature of the gas increased with
respect to…
- p. 580 …Flight 90,
since the balloon had already descended to the activation level of the auto-
matic…
- p. 583 …one hour of floating
it began to descend at an accelerating rate. After falling about 2000…
- p. 585 …In this system, ballast flow was excited at any
altitude if the balloon descended at a…
- p. 591 …Figure 51
the balloon continued to descend. In both cases the token ballast f'low on…
- p. 632 …the train will descend. Although this method was used in early experimental
flights it proved to…
- p. 640 …Sealed in with the squib, which is fired
electrically ~hen the cell descends below 20.000…
- p. 665 …In flight 7,
however, the cluster rose till the lifters were cut off, descended until
sufficient…
- p. 667 …14,000
feet from which it slowly descended. Since the blowout patch was set to
act…
- p. 668 …known to have lasted for ten hours, descending
at Marietta, Oklahoma.
Flight 22, included an earlier…
- p. 669 …It was observed descending 50 miles north of
Toronto, Ontario, Canada, 14 hours later. ihe average…
- p. 670 …at 50,700 feet and began to
descend immediately. Flight 38 (see figure 55) was observed…
- p. 713 …the
Universit,y that balloons have been descending outside of the area in the vicinity
of…
- p. 715 …When the balloon descends to 20-000 feet, it not in the clear,
positions will be…
- p. 725 …VIas it observed descending? If so. when?
4. Di_d it float dawn slowly or fall…
- p. 736 …The only provision
for having the system regain altitude if it descended
too low was by…
- p. 738 …open to the atmosphere until the
balloon descends from a minimum pressure ..-\t this
time, an…
- p. 739 …ft where it leveled off,
then slowly descended to 9000 ft due to diffusion
losses. At…
- p. 740 …For the ballast valve to function, the balloon had to
descend to a pressure which would…
- p. 741 …When the original 2700-gram ballast was expended,
the balloon descended rapidly. Even had the auto…
- p. 777 …e which drops ballast whenever the
balloon descends below a preset altitude.
The specifications for the…
- p. 778 …Once the balloon sta.rtE descending (due to loss
of hydrot;en by diffusion or by…
- p. 784 …The remaining train thereupon descended as fast as it
bad climbed (1,000 ft. per minute…
- p. 870 …After reaching maximum altitude, the balloons
all exhibit a tendency to float then descend at an…
- p. 874 will cause the balloon to descend. Third, as a consequence
of the previous limi te.tion…
- p. 878 …WHEN THE BALLOON DESCeNDs THE PEN ARM RIDES
DOWN ON CoMMUTATOR UNDER THE SHELF, CLOSING THE…
- p. 892 …Was it observed descending? If so, at what timet
4. Did it float down slowly or…
- p. 988 …Due to the prevailing westerlies, MOGUL balloons often
descended in the vicinity of Roswell after launch…
made on this project. A complete report of these flights
and the egnipment used is included in "Technical Report
121.01 11 ( b J b~r this Research Division.
2. High Neutron Intensity Study (Contract AF 28(099)-10)
In conjunction with a study to determine the altitude of
maximum !leutron density a modi.fication was made on the
Consta.,t AJ.ti t11de balloon system developed under this
contract. In order to study ne,_ttron densities at two
different altitudes with the same set of instruments,
it was desirable to carry these instruments thro•1gh
a "stepped flight". The balloon system in this case
was to asc?nd to a selected altitude (say 45,000 ft.)
float there for one-hour and then ascend to a higher
altitude (for example 65,000 ft.) to float for another
hour before descending.
The advantages of this type .t'light for Cosmic Ray st·~dies
are that a given altitude may be s-anpled for a long
enough period of time to obtain statistically valid
results, and such statistical sampling can be made
at several levels wi tho11t the necessity of releasing .
another balloon system and other set of neutron sensing
instruments. By proper design of equi~ment a fairly
wide range of altitudes can be sampled with "altitude
steps" of almost any desired size.
The step effect is attained by release of a fairly
large amount of ballast at a fast rate set off by a
pre-set clock timer or a radio rele~se activated by
a transmitter on the ground. The amount of ballast
to be released is determined from the standard altitude-
vol•,me load relationships used for constant-level balloon
flight. As a part of the final ballast release, the
ballast tank and its controls may be dropped from the
system.
If the level positions of the flight must be controlled
to fine limits, or if they must be of long duration
(more than two hours) it.is necessary to employ constant-
level ballast control over these portions of the flight.
However, if the level portions of the flight are to be
in the neighborhood of 1 ho~1r duration, ballast control
during the~e floating period~ can be elimin~ted, making
use of the inherent st~bility of the pl::l.stic balloon
systems for short range constant level flights. It is
this latter method which was used by the New York University
gro,p in the study of Neutron Naxima.
22.