“G. A.”60+ pages
- p. 33 …The specific Air Staff/Secretariat offices queried included the following:
(a) SAF I AAI, Directorate of…
- p. 75 …the Public Information Officer, Walter G. Haut,
issued a news release that the Amry Air Force…
- p. 104 …vt. G. Hilburn, f'onner Assistant Base Adj•lba.nt, transferred
~~ Squedr~n "A", 427th AAF…
- p. 114 …SFERRED
A. OfFICE , •. STORAGE A. FILE CABINETS (No.) 1. TRANS. FILES (.Yo.) lc SHELVING (Li•. Fl…
- p. 133 …reporti.Dc aot later t:t:.a date 1Jl41catecU
8 Jplx 1947 Cl&tl
Lt. G…
- p. 143 …9:15 A.l:.
9:15 A.~.
9:40 li..M.
9:43 A.ll.
9…
- p. 144 …on fhone requesting a B-29 be sent to
Blackstone, Va. for a celebration by the…
- p. 198 …Cor.anandinr; G~nerel, Army Air Forces, \'/aehint;ton 25, D. C.
ATTN s AC/AS…
- p. 282 …I then went into industry, and I worked for EG&G, a high-
technology company based…
- p. 303 …AlllllffO
PAirrS OP rNF ./OSS.tMM:Y WI./.£ FIT AND
01'€/t.ttrl /It A PROYFA…
- p. 307 …I do not want a lawyer. lamwi · g to answer questions or make a statement or…
- p. 322 …4 consisted of a "cluster of (meteor(>logi-
cal) balloons" and a "regular sonobuoy."23 Presumably…
- p. 401 …a.:-:1!! of the sound channel would also
b~ detectable by l1!te~1r.g at…
- p. 407 …dribble constructed of a five (5) gallon tin incorporating e 11etered
jet to allow a predetermined…
- p. 418 …O.oJ nnel KN'$~.ll.!a G, ~ftr. 0-18373.. «C •.• _~ ..
Retent1Qn: Indefinite. No known replacement…
- p. 436 …A typical night using
constant ballast flow at a rate slightl7 exceeding leakage losses
is shown…
- p. 437 Fig • 9 is a typical night with DO ballaet. !he night train· tor
these flights ia…
- p. 472 …the tloa tin_g level. (The
switch is set so that a rate of change ot…
- p. 483 We may use this equation to approximate the rise of a full balloon
system when controlled…
- p. 488 …A = 2.39 x 108 col I erg
Cp = specific heat at constant pressure
g = acceleration…
- p. 490 …flow, Is and a co-
efficient of leakage,Cd•
(1) where g is the acceleration
due…
- p. 495 …lf • 50 ~ tof:g}af =7820 GII/HR
Values for leakage at several different altitudes…
- p. 506 …tight upon release of this internal pressure.
G. A Ge.tleral Equa.ttc:m of Motion…
- p. 509 …It is for this reason that a non-extensible balloon is said to be
in a…
- p. 510 …a g I -'- (~ .!L)
F, = vb Pa LAo To - Tg Rp + Ro
Discussions of the contamination…
- p. 511 …or 9J <{J)G · dt dt lc
We might also have a control tbl t will…
- p. 512 …1t> !!A_} is the- time during which pressure change of
the airdlurro8h!1~g the balloon…
- p. 523 …The performar.ce specifications are as follows:
(a) Rotation: one revolution every 12 hours
(b) Duration…
- p. 528 …Adjustments are made on the adjusting
screw {L) and the lower ring {G) before each flight…
- p. 536 …flight, a 65-pound load was lifted with a linear array of 28
350-g~ rubber…
- p. 553 …On Plight 43 the tiret model ot an Olland-o7cle pressure modulator was
tlown with a…
- p. 558 …and a satisfactory Olland-cycle
pressure modulator~& also used .for over 5 hours to give height…
- p. 560 …This flight was released at night with a fixed ballast flow of about 300
~rams per…
- p. 573 …Flight 82 is a good example of i'light using a single
fixed-leak orifice for…
- p. 574 …Below the baroswitoh a standard T-69 radiosonde was
supported with a parachute stuffed into a…
- p. 577 Fli.g!lt 89: Released from Alamogordo, New Mexico, 1005 MST, August 26, 1948
Not recovered…
- p. 584 …a near-floating condition for about four hours when the transmitter
40
/ llllllff-~ CUIIVK ~
ICIUMD G…
- p. 589 …With a loss of 10°C superheat, and a limited flow (900 grams per hours), it…
- p. 594 …flight a high loss of lifting gas caused the total ballast
load ot 600 g~s…
- p. 610 …g. Low brittle temperature
h. High transparency to heat redie.tion
Table I is a qualitative…
- p. 625 …C"N-~.~-
8 "/)/A.,=_--.s:¥::J.i:;##
PuRD.t.;f.T..t:Jte fiL relf! ----....
CA…
- p. 630 …11A rt:~IA.t. - B.t.owN Pr.eex
G£.A.5S
"A1-e CHA/"'f1J4…
- p. 646 …rate of rise in feet per minute
G : g~oss lift in grams
For our purposes…
- p. 650 (Approximate)
where G • gross load
A chart, Figure 24, has beendrawn up, based on this equation…
- p. 652 ~G = G X ~X (1 • K) K
T
where t::.. G = loss of lift
G =gross…
- p. 675 III
II
!
I
rl G 01
NYU BALLOON PROJCT
FLt8ht 5
DAT£ 6-5-4…
- p. 680 …Fl G 36
NYU BALLOON PROJECT
FLlGHT 7
D<ll-e: 7-2-47 E 0…
- p. 683 …n..1m•tter
Fl G.3 9
NYU BALLOON FROJtCT
FLIGHT 8
D a. te 7…
- p. 686 …to a thtmble
a.nd attached to re1n forced pCltches
at alterna.te .sea.m.s…
- p. 688 …H.A.Smtth Inc. v.11th reinforced
blowout pa.tches to vent 9Q.b when
f1red…
- p. 690 …G.M.. OO!"pol.yettHlent- balloon
w1th 1ncend.1a. ry pa.tch on e~:~u a…
- p. 713 …OBSTRUCTIONS TO AIR NAVIGATION
A. WHITE SANDS, NEW MEXICO, PROV»>G GROUND -NEW YORK UNIVERSITY - RELEASE…
- p. 731 …2. "Progress in Developing a Constant-Level Balloon", Report by Dewey and
Almy Chemical Company, Cambridge…
- p. 732 …Lugeon, Jean, "Le Poste Aerologique de la Station Centrale de
Meteorologie a Payerne et les nourelles…
- p. 742 …The automatic control is needed for flights
lasting through a period in which day changes to…
- p. 749 …1\\a Mr. o. c. Vinsea to C.B. Moore on rlait.
5/l'J/47…
- p. 761 The follo'W1.n.g personnel lolere hired but later resigned:
1!.!.!!
Robert 't:isnieff
Robert…
- p. 770 …diameter ballgons made
from polyethylene .00411
polyethylene .008 11
saran • 00~25 11 aDd a
fortisan…
- p. 775 …g o! Ul ins":.tument coiilpany whicr. wo,.tld cor.struct
the altitude control devices. A…
- p. 779 …As a result of this preliminary study a sub-contn:.ct was
given to H. A…
If a balloon is teardrop in shape rather than spherical, the curve
would be modified so that the value of c0 , for a given Reynolds
number would be lower. In this case the sudden drop in C0
as Reynolds number increases (the change from viscous to turbulent
flow) would occur at a lower Reynolds number.
We have thus far in our discussion assumed that there is no verti-
cal motion of the air surrounding the balloon system relative to
the coordinate ! • However, this is not necessarily the case
under actual conditions. In many instances vertical llir movement is
found in the a bnosphere. Therefore, we must introduce a term to
allow for this vertical air movement. In equation (2) this term
was indicated as :tFA , the external atmospheric force.
We may consider this vertical air movEment· in terms of a velocity Dt.
Then the vertical velocity of the balloon system relative to the
air surrounding the system will be the difference between the velo-
city of the balloon relative to the absolute altitude Dt and the
velocity of the surrounding air relative to the absolute altitude
This may be equated as D~- 0 C , where Di and DC are both con-
sidered positive in the direction of increase of altitude.
The total force due to the drag, or friction will be:
FD + FATM: CD:. A ( 0!- oc>2
where the00otations are those used previously, exc.ept that now
NR = (Oz- :71 de • The relationship between NR and Co will be those
used previously.
The force due to buoyancy of the lifting gas F8 = Vb (P0 - Pg)
where:
vb: balloon volume (ft.3)
density of the air and lifting gas, respectively
(lb./ft.3)
This term my also be stated as:
where:
P0 , Pg = pressure
R0 ,Rg = specific
F
of air and lifting gas
gas constant of air and lifting
Ta, Tg : temperature of air and lifting gas
gas
The changes that will take place in this expression are those due
to a temperature difference between the lifting gas and the free
air, change in volume of the balloon due to loss of lifting gas,
change of the gas· constant of the lifting gas due to dilution with
air, and (in the case of a balloon that will hold an internal pressure)
pressure difference between lifting gas and surrounding air.
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